JP2009246911A - Voice reproduction system, voice processing device, display device, and program thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To automatically set a delay time of a speaker of a display device in relation to a delay time of a speaker connected to an AV amplifier. <P>SOLUTION: A test signal is transmitted from the AV amplifier to the display device, the test signal is reproduced from the speaker of the display device, and the test signal is received by a microphone arranged at the position of a listener, and thereby, a test signal arrival time is measured. Based on the test signal arrival time of the speaker of the display device and the test signal arrival time of the speaker connected to the AV amplifier, the delay time of the speaker of the display device and the delay time of the speaker connected to the AV amplifier are calculated and stored in relation to each other. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an audio reproduction system including an audio processing device and a display device for reproducing multichannel audio data.

  An audio playback system including a DVD player, which is a source device compliant with the HDMI standard, an AV amplifier, which is a repeater device, and a display device, which is a sink device, is used, and video data is output as HDMI data output from the source device. In addition, by including the audio data, both the video data and the audio data can be transmitted to the repeater device or the sink device through one HDMI cable. The AV amplifier converts the HDMI data received from the DVD player into the original video data and audio data, amplifies the audio data and outputs it to the speaker, converts the video data into HDMI data again, and transmits it to the display device. . The display device converts the received HDMI data into the original video data and displays it.

  The audio data included in the HDMI data transmitted from the DVD player to the AV amplifier is obtained by encoding multichannel audio data. For example, as shown in FIG. 11, the multi-channel audio data includes left audio data L, right audio data R, central audio data C, low frequency audio data SW, surround left audio data SL, surround right audio data SR, left center. Side audio data Lc and right center audio data Rc.

  However, in consideration of the cost problem, the AV amplifier is often not provided with an amplification processing unit and a speaker output terminal corresponding to the left center audio data Lc and the right center audio data Rc. Alternatively, even when an amplification processing unit and a speaker output terminal corresponding to these audio data are provided in the AV amplifier, the user often does not connect a speaker corresponding to these audio data to the AV amplifier. As a result, even if the DVD disc contains audio data of these channels, the audio data of these channels cannot be reproduced and the audio cannot be reproduced from the speakers.

  In order to solve this problem, the applicant converts the left center side audio data Lc and the right center side audio data Rc into HDMI data and transmits it to the display device in the prior application 1, and the display device is included in the HDMI data. A system has been proposed in which left center audio data Lc and right center audio data Rc are reproduced from a speaker provided in a display device.

  Here, the AV amplifier is provided with a speaker setting function for setting a delay time of audio data and a volume correction level for each speaker, and the audio is based on the delay time set when reproducing sound from each speaker. The data is delayed and adjusted to a volume level based on a set volume correction level. A microphone connected to the AV amplifier is placed at the listener's position, the test signal is reproduced in order from each speaker, the test signal is received by the microphone, and the test signal reproduced from each speaker is sent to the microphone. An automatic speaker setting function for automatically setting the delay time and the volume correction level is provided for each speaker by measuring the arrival time and the volume level at the listener's position. The display device can set the volume level, adjusts the audio signal to the set volume level, and outputs the audio from the speaker.

  However, in the above audio reproduction system, the delay time and volume correction level of audio data reproduced from the speaker of the display device are set to the delay time and volume correction level of audio data reproduced from the speaker connected to the AV amplifier. Cannot be set automatically in association with.

[Patent Application 1] Japanese Patent Application No. 2008-9694

  The present invention has been made to solve the above-described conventional problems, and an object of the present invention is to set a delay time or a volume correction level of audio data reproduced from a speaker of a display device from a speaker connected to an AV amplifier. An object of the present invention is to provide an audio reproduction system that can be automatically set in association with a delay time or volume correction level of reproduced audio data.

  An audio reproduction system according to a preferred embodiment of the present invention includes a display device including at least one first speaker, and an audio processing device capable of connecting the display device and at least one second speaker. The audio processing device reproduces a test signal from the second speaker and receives the test signal by a microphone arranged at a listener's position, thereby measuring a test signal arrival time of the second speaker, By receiving the test signal reproduced from the first speaker by the microphone, the measuring means for measuring the test signal arrival time of the first speaker, the test signal arrival time of the first speaker, and the second speaker Based on the test signal arrival time, at least one of a delay time of the first channel audio data reproduced from the first speaker and a delay time of the second channel audio data reproduced from the second speaker is calculated. Delay time management means for storing, and the display device for the test signal At least one of the first channel audio data and the second channel audio data included in the multichannel audio data based on the test signal transmission means to be transmitted and the delay time stored in the delay time management means Delay processing means for delaying the first channel audio data, and first reproduction means for transmitting the first channel audio data to the display device and reproducing the second channel audio data from the second speaker. The display device receives the first channel audio data transmitted from the first reproducing means, and reproduces the test signal transmitted from the test signal transmitting means, the second reproducing means for reproducing from the first speaker. Test signal reproducing means for receiving and reproducing the test signal from the first speaker.

  The sound processing device can calculate and store the delay time of the first speaker of the display device in association with the delay time of the second speaker connected to the sound processing device. When the audio data of the channel to be reproduced by the first speaker is included, the audio processing device can delay the audio data of this channel by the delay time for the first speaker and output it to the display device. . As a result, the arrival time of the sound reproduced from the first speaker and the sound reproduced from the second speaker to the listener can be made substantially the same.

  In a preferred embodiment, the measuring means reproduces a test signal from the second speaker and receives the test signal by the microphone arranged at the listener's position, thereby allowing the listener of the second speaker to receive the test signal. The volume level at the position is measured, and the test signal reproduced from the first speaker is received by the microphone, thereby measuring the volume level at the position of the listener of the first speaker. The first channel sound reproduced from the first speaker based on the volume level of the first speaker at the listener's position and the volume level of the second speaker at the listener's position. Volume correction level management means for calculating and storing at least one of a data volume correction level and a volume correction level of the second channel audio data reproduced from the second speaker, and stored in the volume correction level management means. Volume level calculating means for calculating the volume level of the first channel sound data and the volume level of the second channel sound data based on the sound volume correction level, and the second speaker calculated by the volume level calculation means And the volume level of the second channel audio data. Further comprising a first volume control means for adjusting the Le, and a volume level transmitting means for transmitting the volume level for said first speaker calculated by the sound volume level calculating means to said display device. The display apparatus further includes second volume adjusting means that is set to a volume level for the first speaker transmitted from the volume level transmitting means and adjusts a volume level of the first channel audio data.

  The audio processing device can calculate and store the volume correction level of the first speaker of the display device in association with the volume correction level of the second speaker connected to the audio processing device. When the audio data of the channel to be reproduced by the first speaker is included, the audio processing device transmits the volume level for the first speaker to the display device, and outputs the audio data of this channel to the display device. . As a result, the sound volume level at the listener's position between the sound reproduced from the first speaker and the sound reproduced from the second speaker can be made substantially the same.

  In a preferred embodiment, the original volume level set in the second volume adjusting unit immediately before the display device is set to the volume level for the first speaker transmitted from the volume level transmitting unit is used as the sound. An original volume level transmitting means for transmitting to the processing means, wherein the sound processing device receives the original volume level and stores the original volume level storage means; and the measuring means is for the listener of the first speaker. And further comprising original volume level reply means for returning the original volume level stored in the original volume level storage means to the display device after measuring the volume level at the position. When received, the volume level of the second volume adjusting means is set again to the original volume level.

  In this case, since the volume level at the position of the listener of the first speaker can be measured and then returned to the original volume level, the listener feels uncomfortable when reproducing other audio data from the first speaker. Can be prevented.

  In a preferred embodiment, the audio processing device can further be connected to a third speaker that reproduces the third channel audio data included in the multi-channel audio data, and the audio processing device connects the first speaker. Speaker determination means for determining whether or not the first speaker can be used, and when it is determined that the first speaker cannot be used, the delay time management means includes a test signal arrival time of the second speaker, Based on the test signal arrival time of the third speaker, at least a delay time of the second channel audio data reproduced from the second speaker and a delay time of the third channel audio data reproduced from the third speaker One is calculated and stored, and when it is determined that the first speaker can be used, The management means plays back the first speaker from the first speaker based on the test signal arrival time of the first speaker, the test signal arrival time of the second speaker, and the test signal arrival time of the third speaker. Calculating at least one of a delay time of the one-channel audio data, a delay time of the second-channel audio data reproduced from the second speaker, and a delay time of the third-channel audio data reproduced from the third speaker; And remember.

  In this case, when the first speaker cannot be used, the delay of the second speaker and the third speaker is based only on the test signal arrival time of the second speaker and the third speaker connected to the sound processing device. Time can be calculated. If the first speaker can be used, the delay times of the first speaker, the second speaker, and the third speaker are determined based on the test signal arrival times of the first speaker, the second speaker, and the third speaker. Can be calculated.

  In a preferred embodiment, the audio processing device can further be connected to a third speaker that reproduces the third channel audio data included in the multi-channel audio data, and the audio processing device connects the first speaker. Speaker determination means for determining whether or not the first speaker can be used, and when it is determined that the first speaker cannot be used, the sound volume correction level management means determines the volume of the second speaker at the listener's position. Based on the level and the volume level of the third speaker at the listener's position, the volume correction level of the second channel audio data reproduced from the second speaker and the third volume reproduced from the third speaker. Calculating and storing at least one volume correction level of the channel audio data; When it is determined that the sound volume is usable, the sound volume correction level management means includes a sound volume level at the listener position of the first speaker, a sound volume level at the listener position of the second speaker, and the third speaker. The volume correction level of the first channel audio data reproduced from the first speaker and the volume correction level of the second channel audio data reproduced from the second speaker based on the volume level at the listener's position And calculating and storing at least one of the volume correction levels of the third channel audio data reproduced from the third speaker.

  In this case, when the first speaker cannot be used, the second speaker and the third speaker are based only on the volume level at the listener's position of the second speaker and the third speaker connected to the sound processing device. The speaker volume correction level can be calculated. When the first speaker can be used, the volume of the first speaker, the second speaker, and the third speaker is based on the volume level at the listener's position of the first speaker, the second speaker, and the third speaker. A correction level can be calculated.

  An audio reproduction system according to another preferred embodiment of the present invention includes a display device including at least one first speaker, and an audio processing device capable of connecting the display device and at least one second speaker. The sound processing device reproduces a test signal from the second speaker, and receives the test signal by a microphone disposed at the listener's position, thereby measuring the volume level at the listener's position of the second speaker. And measuring means for measuring a volume level at the position of the listener of the first speaker by receiving a test signal reproduced from the first speaker by the microphone, and at a position of the listener of the first speaker. Based on the volume level and the volume level at the listener's position of the second speaker, the volume correction level of the first channel audio data reproduced from the first speaker and the second channel reproduced from the second speaker. Calculate and store at least one volume correction level for audio data And a volume level for calculating a volume level of the first channel audio data and a volume level of the second channel audio data based on the volume correction level stored in the volume correction level management means. Calculated by calculating means, first volume adjusting means for adjusting the volume level of the second channel audio data set to the volume level for the second speaker calculated by the volume level calculating means, and calculated by the volume level calculating means. Volume level transmitting means for transmitting the volume level for the first speaker to the display device, test signal transmitting means for transmitting the test signal to the display device, and transmitting the first channel audio data to the display device And the second channel audio data is And a first reproducing means for reproducing from 2 speakers. The display device is set to a volume level for the first speaker transmitted from the volume level transmitting means, and a second volume adjusting means for adjusting a volume level of the first channel audio data; and the first channel audio data Is reproduced from the first speaker, and test signal reproducing means for receiving the test signal transmitted from the test signal transmitting means and reproducing it from the first speaker.

  The sound processing device can calculate and store the delay time of the first speaker of the display device in association with the delay time of the second speaker connected to the sound processing device. When the audio data of the channel to be reproduced by the first speaker is included, the audio processing device can delay the audio data of this channel by the delay time for the first speaker and output it to the display device. . As a result, the arrival time of the sound reproduced from the first speaker and the sound reproduced from the second speaker to the listener can be made substantially the same.

  Hereinafter, an audio playback system including a disc playback apparatus (for example, a DVD player), an audio processing apparatus (for example, an AV amplifier), and a display apparatus (for example, a television receiver) according to a preferred embodiment of the present invention will be described with reference to the drawings. However, the present invention is not limited to these embodiments.

  FIG. 1 is a diagram for explaining an example of the arrangement of the AV amplifier 20, the display device 30, and each speaker in the present embodiment (DVD player 10 is omitted). The display device 30 includes a display unit 32, a display left speaker SLD, and a display right speaker SRD. A display device 30 is connected to the AV amplifier 20 via an HDMI cable. 70) is connected. The left speaker SL is disposed outside (left side) the display left speaker SLD, and the right speaker SR is disposed outside (right side) the display right speaker SRD. In this example, the AV amplifier 20 does not include an amplification processing unit and a speaker output terminal corresponding to left center side audio data Lc and right center side audio data Rc, which will be described later. Therefore, in FIG. The speaker corresponding to the data is not connected and arranged.

  2 is a block diagram showing the configurations of the DVD player 10 and the AV amplifier 20, and FIG. 3 is a block diagram showing the configurations of the AV amplifier 20 (same as FIG. 2) and the display device 30, respectively. The DVD player 10, the AV amplifier 20, and the display device 30 comply with the HDMI standard, for example, and are connected to each other via an HDMI cable.

[Configuration of DVD Player 10]
The DVD player 10 includes a reproduction unit 11, a resolution conversion unit 12, an HDMI transmission unit 13, a system control unit 14, an operation display unit 15, a memory 16, and a connector unit 17.

  The playback unit 11 reads video data recorded on a DVD disc (hereinafter simply referred to as a disc) from the disc, and supplies it to the resolution conversion unit 12. In addition, the playback unit 11 reads encoded multi-channel audio data recorded on the disc from the disc and supplies it to the HDMI transmission unit 13. The reproduction unit 11 includes an optical pickup, a servo circuit, an MPEG decoder, an audio decoder, etc. (not shown).

  The resolution conversion unit 12 determines the resolution of the video data supplied from the reproduction unit 11. Further, the resolution conversion unit 12 converts the determined resolution of the video data into a resolution set by a user operation by a command from the system control unit 14. The video data whose resolution has been converted by the resolution conversion unit 12 is supplied to the HDMI transmission unit 13.

  The HDMI transmission unit 13 converts the video data supplied from the resolution conversion unit 12 and the audio data supplied from the playback unit 11 into HDMI standard data (hereinafter referred to as HDMI data) by a command from the system control unit 14. Convert. The HDMI transmission unit 13 transmits the HDMI data to the AV amplifier 20 via the connector unit 17.

  The HDMI transmission unit 13 includes a TMDS line for transmitting and receiving HDMI data (normally there are a plurality of lines, but only one line is shown in FIG. 1 for simplicity), and a hot plug for determining the presence or absence of connection. To the HDMI receiving unit 21 of the AV amplifier 20. The HDMI transmission unit 13 is connected to the HDMI reception unit 21 and the PROM 25 of the AV amplifier 20 via a DDC line for reading out EDID.

  The system control unit 14 controls the playback unit 11, the resolution conversion unit 12, the HDMI transmission unit 13, the operation display unit 15, the memory 16, and the like based on the operation program of the DVD player stored in the built-in or connected memory. For example, a microcomputer or a CPU is used. The system control unit 14 executes various processes based on an operation input from the operation display unit 15 or a control signal and data from each unit.

  The system control unit 14 is connected to the system control unit 23 of the AV amplifier 20 via the CEC line, and transmits / receives commands and / or data to / from the system control unit 23.

[Configuration of AV amplifier]
Next, the configuration of the AV amplifier 20 will be described with reference to FIG. 2 or FIG. The AV amplifier 20 includes an HDMI receiving unit 21, an HDMI transmitting unit 22, a system control unit 23, an operation display unit 24, a memory (EDID PROM, hereinafter referred to as PROM) 25, an audio processing unit 26, and a connector. Parts 27 and 28.

  The HDMI receiving unit 21 receives the HDMI data transmitted from the DVD player 10, generates original video data (video data before HDMI conversion) from the received HDMI data, and supplies it to the HDMI transmitting unit 22. Further, the HDMI receiving unit 21 generates original multi-channel audio data from the received HDMI data and supplies the generated multi-channel audio data to the audio processing unit 26.

  The audio processing unit 26 decodes the multi-channel audio data supplied from the HDMI receiving unit 21 and executes various processes such as delay processing, equalizer processing, D / A conversion processing, volume adjustment processing, amplification processing, etc. The audio signal of each channel is supplied to the connected speaker 60 (corresponding to each speaker in FIG. 1). The audio processing unit 26 also supplies audio data of a certain channel (for example, left center side audio data Lc, right center side audio data Rc) to the HDMI transmission unit 22.

  Here, the multi-channel audio data supplied to the audio processing unit 26 will be described. As shown in FIG. 11, multi-channel audio data includes, for example, left audio data L, right audio data R, central audio data C, low frequency audio data SW, surround left audio data SL, surround right audio data SR, left The center side audio data Lc, the right center side audio data Rc, and the like are included. Note that the left center audio data Lc is audio data reproduced from a position between the left audio data L and the central audio data C (center side than the left audio data L). The right center audio data Rc is audio data reproduced from a position between the right audio data R and the central audio data C (center side than the right audio data R).

  FIG. 4 is a block diagram illustrating a configuration of the audio processing unit 26. The audio processing unit 26 includes a DSP 41, a DAC (digital-analog converter) 42, a volume adjustment unit 43, an amplification processing unit 44, and a conversion unit 45.

  The DSP 41 decodes the multichannel audio data supplied from the HDMI receiving unit 21 and generates decoded audio data of each channel. Of the audio data decoded by the DSP 41, left audio data L, right audio data R, central audio data C, low frequency audio data SW, surround left audio data SL, and surround right audio data SR are supplied to the DAC 42. On the other hand, the left central audio data Lc and the right central audio data Rc are supplied to the conversion unit 45.

  The DAC 42 digital-analog converts the audio data of each channel supplied from the DSP 41, and supplies the analog audio signal of each channel to the volume adjusting unit 43.

  The volume adjusting unit 43 adjusts the volume level of the analog audio signal of each channel, and supplies it to the amplification processing unit 44. The volume adjustment unit 43 is provided with a volume adjustment circuit such as a variable resistor for each channel. The amplification processing unit 44 amplifies the audio signal of each channel supplied from the volume adjustment unit 43 and outputs the amplified audio signal to the speaker of each channel via the speaker output terminal of each channel. The amplification processing unit 44 is provided with an amplification circuit for each channel.

  The conversion unit 45 is supplied with the bit clock BCLK, the master clock MCLK, and the LR clock LRCLK from the DSP 41. The conversion unit 45 converts the left center audio data Lc and the right center audio data Rc into SPDIF (2-channel PCM) audio data based on each clock, and supplies the converted audio data to the HDMI transmission unit 22.

  When automatic speaker setting is executed, a test signal stored in a memory (not shown) or the like inside the DSP 41 is supplied to the DSC 42 and the conversion unit 45 via the path of each channel. The DAC 42 converts the test signal from digital to analog, the volume adjusting unit 43 adjusts the volume level of the test signal to the reference level, and the amplification processing unit 44 amplifies the test signal and supplies it to the speaker of the channel to be measured. The conversion unit 45 is supplied with a test signal from the DSP 41, converts the test signal into SPDIF (2-channel PCM) audio data based on the clock, and supplies the audio data to the HDMI transmission unit 22.

  Returning to FIG. 2 or FIG. 3, the HDMI transmission unit 22 receives the video data supplied from the HDMI reception unit 21, and the left central audio data Lc and right central audio supplied from the conversion unit 45 of the audio processing unit 26. Data Rc is converted into HDMI data. When automatic speaker setting is executed, video data (for example, an OSD screen generated by an OSD generation unit (not shown)) and a test signal supplied from the conversion unit 45 of the audio processing unit 26 are converted into HDMI data. . The HDMI transmission unit 22 transmits the converted HDMI data to the HDMI reception unit 31 of the display device 30.

  The HDMI transmission unit 22 is connected to the HDMI reception unit 31 of the display device 30 via a TMDS line and a hot plug. The HDMI transmission unit 22 is connected to the PROM 34 and the HDMI reception unit 31 of the display device 30 via a DDC line.

  The system control unit 23 controls the HDMI reception unit 21, the HDMI transmission unit 22, the operation display unit 24, the PROM 25, the audio processing unit 26, and the like based on an AV amplifier operation program stored in a built-in or connected memory. For example, a microcomputer or a CPU is used. The system control unit 23 executes various processes based on an operation input from the operation display unit 24 or a control signal and data from each unit.

  The system control unit 23 is connected to the system control unit 14 of the DVD player 10 via the CEC line, and transmits and receives commands and data to and from the system control unit 14. The system control unit 23 is connected to the system control unit 33 of the display device 30 via the CEC line, and transmits and receives commands and data to and from the system control unit 33.

  When executing automatic speaker setting, the system control unit 23 changes the DSP 41 to the left audio data L, the right audio data R, the central audio data C, the low frequency audio data SW, the surround left audio data SL, and the surround right audio data SR. The test signal is output in order to each corresponding speaker. In addition, the system control unit 23 causes the DSP 41 and the HDMI transmission unit 22 to reproduce the test signal on the display left speaker SLD and the display right speaker SRD corresponding to the left center audio data Lc and the right center audio data Rc. HDMI data including a test signal is transmitted to the display device 30. When the DSP 41 outputs a test signal to each channel, the DSP 41 notifies the system control unit 23 that the test signal has been output. This is because the system control unit 23 knows the start time for calculating the arrival time of the test signal.

  When executing automatic speaker setting, the test signal measuring unit 29 sequentially reproduces from each speaker connected to the AV amplifier, the display left speaker SLD, and the display right speaker SRD, and receives the test signal received by the microphone 70. The When the test signal is input, the test signal measuring unit 29 notifies the system control unit 23 that the test signal has been input, detects the volume level of the test signal by a known technique, and the system control unit 23 Notify

  For each speaker, the system control unit 23, for example, the time elapsed from the time when the test signal is output from the DSP 41 to the time when the test signal is input to the test signal measurement unit 29 (hereinafter referred to as test signal arrival time). And the delay time of the audio data for each speaker is calculated. Specifically, the delay time of the audio data output to the speaker having the longest test signal arrival time is set to 0 ms as a reference (that is, the delay time is not set). The delay time of the audio data output to the other speakers is set to a time t0-t1 obtained by subtracting the test signal arrival time t1 of the target speaker from the test signal arrival time t0 of the speaker in which the delay time is set to 0 ms. To do. That is, the delay time of each speaker is set to a value such that the arrival time of the sound from each speaker at the position of the listener is the same. Note that the delay time calculated for each speaker is stored in the speaker setting table shown in FIG. 5 stored in the memory 23a connected (or built in) to the system control unit 23.

  In the present embodiment, the display left speaker SLD or the display right speaker SRD (the left center side audio data Lc or the right center side audio data) due to the conversion processing time in the conversion unit 45, the HDMI transmission unit 22, and the HDMI reception unit 31. It is considered that the arrival time of the test signal of Rc) is the longest. Accordingly, the delay time of the display left speaker SLD or the display right speaker SRD is set to 0 ms, and the delay time of the other speakers is set based on the test signal arrival time of the display left speaker SLD or the display right speaker SRD.

  In addition, the system control unit 23 sets the volume correction level of any speaker among the speakers to 0 dB which is a reference. For example, the volume correction level of the speaker having the fourth largest volume level among the volume levels of the test signal reproduced from eight speakers is set to 0 dB. The volume correction level of the other speakers is a value VA−VB obtained by subtracting the volume level VB of the test signal from the target speaker from the volume level VA of the test signal from the speaker whose volume correction level is set to 0 dB. Set to That is, the volume correction level of each speaker is set so that the volume level at the position of the listener of the sound output from each speaker is the same. The calculated volume correction level for each speaker is stored in the speaker setting table shown in FIG. 5 stored in the memory 23a connected (or built in) to the system control unit 23.

  The system control unit 23 acquires channel information of multichannel audio data from the audio processing unit 26, and determines whether the left center side audio data Lc and the right center side audio data Rc are included in the multichannel audio data. When the left central audio data Lc and the right central audio data Rc are included, the system control unit 23 outputs the left central audio data Lc and the right central audio data Rc to the conversion unit 45. Control. Thereby, in FIG. 1, the left audio data L is reproduced from the left speaker SL, the right audio data R is reproduced from the right speaker SR, the left center side audio data Lc is reproduced from the display left speaker SLD, and the display right speaker SRD. To the right center audio data Rc is reproduced. At this time, the system control unit 23 causes the DSP 41 to delay the output of the audio data of each channel by the delay time of the speaker setting table of FIG.

  When the multi-channel audio data includes the left center audio data Lc and the right center audio data Rc, the system control unit 23 sends the display left speaker SLD and the display right to the display device 30 via the CEC line. A volume setting command including a volume level for the speaker SRD is transmitted. The volume level for the display left speaker SLD and the display right speaker SRD is a value obtained by adding the volume correction level registered in the speaker setting table of FIG. 5 to the volume level of the master volume. When the left central audio data Lc and the right central audio data Rc are reproduced using the speaker of the display device 30, the sound volume reproduced from the speaker connected to the AV amplifier 20 and the speaker of the display 30 are reproduced. The volume of the reproduced voice can be matched.

[Configuration of Display Device 30]
Next, the display device 30 will be described with reference to FIG. The display device 30 includes an HDMI receiving unit 31, a display unit 32, a system control unit 33, a memory (EDID PROM, hereinafter referred to as PROM) 34, an operation unit 35, an audio processing unit 36, and a speaker 37 ( 1) (corresponding to the display left speaker SLD and the display right speaker SRD) in FIG.

  The HDMI receiving unit 31 receives the HDMI data transmitted from the HDMI transmitting unit 22 of the AV amplifier 20, generates original video data from the HDMI data, and supplies the original video data to the display unit 32. In addition, the HDMI receiving unit 31 generates original audio data from the HDMI data and supplies it to the audio processing unit 36. As described above, the audio data is, for example, SPDIF (PCM) data including the left central audio data Lc and the right central audio data Rc.

  The audio processing unit 36 performs processes such as a D / A conversion process, a volume adjustment process, and an amplification process on the audio data supplied from the HDMI receiving unit 31 and supplies the audio data to the speaker 37. FIG. 6 is a block diagram showing the configuration of the audio processing unit 36. The audio processing unit 36 includes a DAC (digital-analog converter) 51, a volume adjustment unit 52, and an amplification processing unit 53.

  The DAC 51 performs digital-analog conversion on the audio data supplied from the HDMI receiving unit 31 and supplies an analog audio signal to the volume adjusting unit 52. The volume adjustment unit 52 adjusts the volume level of the analog audio signal from the DAC 51, and supplies it to the amplification processing unit 53. The volume level of the volume adjustment unit 52 is adjusted by the system control unit 33 to the volume level included in the volume setting command from the system control unit 14 of the AV amplifier 20. The amplification processing unit 53 amplifies the audio signal from the volume adjustment unit 52 and outputs it to the speaker. That is, the left center side audio data Lc is reproduced from the display left speaker SLD, and the right center side audio data Rc is reproduced from the display right speaker SRD.

  When executing the automatic speaker setting, the HDMI receiving unit 31 receives the HDMI data transmitted from the HDMI transmitting unit 22 of the AV amplifier 20, generates original video data (OSD screen) from the HDMI data, and displays the display unit. 32. In addition, the HDMI receiving unit 31 generates a test signal from the HDMI data and supplies the test signal to the audio processing unit 36. The audio processing unit 36 performs each process such as a D / A conversion process, a volume adjustment process, and an amplification process on the test signal supplied from the HDMI receiving unit 31 and supplies the test signal to the speaker 37. When reproducing the test signal, the volume level of the volume adjustment unit 52 is set to the same reference level as the reference level set in the volume adjustment unit 43 of the AV amplifier 20.

  The display unit 32 is supplied with video data from the HDMI receiving unit 31 and displays video based on the video data, and is, for example, an LCD or a CRT.

  The system control unit 33 controls the HDMI receiving unit 31, the display unit 32, the PROM 34, the audio processing unit 36, and the like based on an operation program of the display device stored in a built-in or connected memory. A microcomputer or a CPU. The system control unit 33 executes various processes based on an operation input from the operation unit 35 or a control signal and data from each unit.

  When receiving the volume setting command from the system control unit 23 of the AV amplifier 20, the system control unit 33 controls the volume level of the volume adjustment unit 52 based on the volume level included in the volume setting command. When the test signal or the left center side audio signal Lc and the right center side audio signal Rc are reproduced from the display left speaker SLD and the display right speaker SRD, the volume level of the volume adjustment unit 52 is notified from the AV amplifier 20. The system control unit 33 sets the original volume level set in the volume adjustment unit 52 to the AV level before setting the reference level or volume level notified from the AV amplifier 20. The system controller 23 of the amplifier 20 is notified via the CEC line and stored in the memory 23a of the AV amplifier 20. Then, after finishing the reproduction of the test signal or the left center side audio signal Lc and the right center side audio signal Rc, the system control unit 33 receives the original volume level from the system control unit 23 of the AV amplifier 20. The volume level of the volume adjustment unit 52 is set again to the original volume level.

[Auto speaker setting processing]
Hereinafter, the automatic speaker setting process will be described with reference to the flowcharts of FIGS. As shown in FIG. 7, when an automatic speaker setting instruction is input by a user operation (YES in S1), the system control unit 23 sets the volume level of the volume adjustment unit 43 to a reference level (for example, 0 dB), and the left The audio processing unit 26 is controlled to reproduce test signals in a predetermined order from the speaker SL, right speaker SR, center speaker SC, low-frequency speaker SSW, surround left speaker SSL, and surround right speaker SSR (S2). A test signal reproduced from each speaker is received by the microphone 70 arranged at the listener's position and input to the test signal measuring unit 29. The system control unit 23 measures the test signal arrival time and the volume level for the test signal reproduced from each speaker, and temporarily stores them in the memory 23a.

  Subsequently, the system control unit 23 determines whether or not the user operation is set to communicate with the system control unit 33 of the display device 30 via the CEC line (S3). If it is set not to communicate with the system control unit 33 of the display device 30 via the CEC line (NO in S3), the process proceeds to S9. That is, the delay time and volume correction level of each speaker connected to the AV amplifier 20 are calculated from the test signal arrival time and volume level of each speaker connected to the AV amplifier 20 measured in S2 (S9). .

  On the other hand, when it is set to communicate with the system control unit 33 of the display device 30 via the CEC line (YES in S3), the system control unit 23 uses the system control unit 33 of the display device 30 via the CEC line. Transmits a speaker availability confirmation command for confirming whether the display left speaker SLD and the display right speaker SRD can be used (S4).

  As shown in FIG. 8, when the system control unit 33 of the display device 30 receives the speaker availability confirmation command (YES in S11), it communicates with the system control unit 23 of the AV amplifier 20 through the CEC line by a user operation. It is determined whether or not the setting is made (S12). If it is set not to communicate with the system control unit 23 of the AV amplifier 20 via the CEC line (NO in S12), the process ends.

  On the other hand, when it is set to communicate with the system control unit 23 of the AV amplifier 20 via the CEC line (YES in S12), the system control unit 33 can use the display left speaker SLD and the display right speaker SRD. It is determined whether or not there is (S13). When the display left speaker SLD and the display right speaker SRD can be used (YES in S13), the system control unit 33 sends the display left speaker SLD and the display right speaker SRD to the system control unit 23 of the AV amplifier 20 via the CEC line. Is notified that the volume level set in the current volume adjustment unit 52 (referred to as the original volume level) is sent to the system control unit 23 (S14).

  On the other hand, when the display left speaker SLD and the display right speaker SRD cannot be used because, for example, no speaker is provided or another audio signal is being reproduced (NO in S13), the system control unit 33 Notifies the system control unit 23 of the AV amplifier 20 through the CEC line that the display left speaker SLD and the display right speaker SRD cannot be used (S15).

  As shown in FIG. 7, the system control unit 23 determines whether or not the display left speaker SLD and the display right speaker SRD can be used based on the notification from the system control unit 33 of the display device 30 (S5). ).

  When the display left speaker SLD and the display right speaker SRD can be used (YES in S5), the system control unit 23 stores the original volume level received from the system control unit 33 of the display device 30 in the memory 23a, and the CEC line. Then, a volume setting command is transmitted to the system control unit 33 of the display device 30 (S6). The volume setting command includes a reference level (for example, 0 dB) set in the volume adjusting unit 43 when a test signal is output from a speaker connected to the AV amplifier 20. This is because the volume level at the listener's position is measured at the same volume level. As shown in FIG. 8, when receiving the volume setting command, the system control unit 33 sets the volume level of the volume adjustment unit 52 to the reference level included in the volume setting command (S16). Then, the system control unit 33 transmits a volume setting completion notification to the system control unit 23 of the AV amplifier 20 via the CEC line line (S17).

  As illustrated in FIG. 7, when receiving the volume setting completion notification, the system control unit 23 controls the audio processing unit 26 and the HDMI transmission unit 22 to transmit HDMI data including the test signal to the display device 30 (S7). ). Specifically, the DSP 41 supplies a test signal to the conversion unit 45, the conversion unit 45 converts the test signal into an SPDIF signal, the HDMI transmission unit 22 converts the test signal and the OSD screen into HDMI data, and the display device 30 Are output to the HDMI receiving unit 31. As shown in FIG. 8, when receiving the HDMI data (YES in S18), the HDMI receiving unit 31 supplies the OSD screen to the display unit 32 and supplies the test signal to the audio processing unit 36. In the sound processing unit 36, the DAC 51 performs digital-analog conversion of the test signal, the volume adjustment unit 52 adjusts the volume level of the test signal, the amplification processing unit 53 amplifies the test signal, the display left speaker SLD and the display right A test signal is reproduced from the speaker SRD (S19).

  The test signal reproduced from the display left speaker SLD and the display right speaker SRD is received by the microphone 70 disposed at the listener's position and input to the test signal measuring unit 29. The system control unit 23 measures the test signal arrival time and the volume level for the test signals reproduced from the display left speaker SLD and the display right speaker SRD, and temporarily stores them in the memory 23a (S7).

  The system control unit 23 returns the original volume level of the volume adjustment unit 52 stored in the memory 23a in S6 to the system control unit 33 of the display device 30 via the CEC line (S8). As shown in FIG. 8, when receiving the original volume level before setting the reference level from the system control unit 23 of the AV amplifier 20, the system control unit 33 sets the volume level of the volume adjustment unit 52 to the original volume level. (S20). Therefore, when reproducing other audio data from the display left speaker SLD and the display right speaker SRD, the volume level of the volume adjustment unit 52 remains at the reference level, thereby preventing discomfort to the listener. Can do.

  Next, the system control unit 23 determines the test signal arrival time and volume of the test signal from the left speaker SL, right speaker SR, center speaker SC, low-frequency speaker SSW, surround left speaker SSL, and surround right speaker SSR measured in S2. Based on the level and the test signal arrival time and volume level of the test signal from the display left speaker SLD and the display right speaker SRD measured in S7, the left speaker SL, the right speaker SR, the central speaker SC, the low frequency speaker SSW, The delay time and volume correction level of the surround left speaker SSL, surround right speaker SSR, display left speaker SLD, and display right speaker SRD are calculated and stored in the speaker setting table of FIG. 5 (S9). The calculation method of the delay time and the sound volume correction level is as described above.

  On the other hand, if the display left speaker SLD and the display right speaker SRD cannot be used in S5 (NO in S5), the process proceeds to S9, and the system control unit 23 determines the left speaker SL, right speaker SR, and center speaker measured in S2. SC, low-frequency speaker SSW, surround left speaker SSL, surround right speaker SSR, based on only the test signal arrival time and volume level of the test signal from left speaker SL, right speaker SR, center speaker SC, low-frequency speaker SSW, The delay time and volume correction level of the surround left speaker SSL and surround right speaker SSR are calculated and stored in the speaker setting table of FIG. 5 (S9). At this time, the delay time and volume correction level of the display left speaker SLD and the display right speaker SRD are not registered in the speaker setting table.

[Audio playback processing using speaker settings]
Hereinafter, the sound reproduction process using the speaker setting will be described with reference to the flowcharts of FIGS. As shown in FIG. 9, the system control unit 23 of the AV amplifier 20 monitors whether or not HDMI data is input from the DVD player 10, that is, whether or not the HDMI receiving unit 21 receives HDMI data. When HDMI data is input, the HDMI receiving unit 21 generates original video data and multi-channel audio data from the HDMI data, supplies the video data to the HDMI transmitting unit 22, and converts the multi-channel audio data into the audio processing unit. 26. The audio processing unit 26 decodes a part of the multi-channel audio data, reads the channel information included in the information area, and supplies the channel information to the system control unit 23 (S21).

  The system control unit 23 determines whether the left center side audio data Lc and the right center side audio data Rc are included in the multi-channel audio data (S22). If the left central audio data Lc and the right central audio data Rc are not included (NO in S22), the process proceeds to S28. On the other hand, when the left central audio data Lc and the right central audio data Rc are included (YES in S22), the system control unit 23 determines whether the display left speaker SLD and the display right speaker SRD can be used. Is determined (S23). Whether or not the display left speaker SLD and the display right speaker SRD can be used is to check whether the delay time and the volume correction level of the display left speaker SLD and the display right speaker SRD are registered in the speaker setting table. Can be judged.

  When the display left speaker SLD and the display right speaker SRD cannot be used (NO in S23), the process proceeds to S28. On the other hand, when the display left speaker SLD and the display right speaker SRD can be used (YES in S23), the system control unit 23 reproduces the left center side audio data Lc and the right center side audio data Rc with the speaker of the display device 30. In order to prepare for this, a volume setting command is transmitted to the system control unit 33 of the display device 30 via the CEC line (S24). The volume setting command includes a volume level for the display left speaker SLD and a volume level for the display right speaker SRD. These are set to the volume level of the master volume of the AV amplifier 20 and the speaker setting shown in FIG. It is calculated by adding the volume correction level stored in the table.

  As shown in FIG. 10, the system control unit 33 of the display device 30 monitors whether or not a volume setting command is received from the system control unit 23 of the AV amplifier 20 via the CEC line (S41). When receiving the volume setting command (YES in S41), the system control unit 33 transmits the original volume level set in the volume adjustment unit 52 to the system control unit 23 of the AV amplifier 20 (S42). As shown in FIG. 9, when the system control unit 23 of the AV amplifier 20 receives the original volume level from the system control unit 33 of the display device 30, the system control unit 23 stores the original volume level in the memory 23a (S25).

  Subsequently, as shown in FIG. 10, the system control unit 33 reads the volume level for the display left speaker SLD and the volume level for the display right speaker SRD included in the volume setting command, and The volume level for each speaker is set to the volume level (S43). Subsequently, the system control unit 33 transmits a volume setting completion notification to the system control unit 23 of the AV amplifier 20 via the CEC line (S44). Thereafter, the display device 30 stands by until HDMI data is received from the AV amplifier 20.

  As shown in FIG. 9, when the system control unit 23 of the AV amplifier 20 receives the volume setting completion notification from the system control unit 33 of the display device 30 via the CEC line, the left center side from the speaker setting table of FIG. The delay time of the audio data Lc and the right center side audio data Rc is read out, and the DSP 41 is instructed to output the delay time, the left center side audio data Lc and the right center side audio data Rc delayed. In response to an instruction from the system control unit 23, the DSP 41 delays the left center side audio data Lc and the right center side audio data Rc by the specified time, and outputs the delayed data to the conversion unit 45 (S26). The conversion unit 45 converts the left central audio data Lc and the right central audio data Rc into SPDIF (PCM) data and supplies the converted data to the HDMI transmission unit 22. The HDMI transmission unit 22 generates HDMI data from the video data, the left central audio data Lc, and the right central audio data Rc, and transmits the HDMI data to the HDMI receiving unit 31 of the display device 30 (S27).

  As shown in FIG. 10, when receiving the HDMI data, the HDMI receiving unit 31 of the display device 30 generates original video data, left center side audio data Lc, and right center side audio data Rc, and outputs the video data. The left central audio data Lc and the right central audio data Rc are supplied to the audio processing unit 36 (S45). The system control unit 33 controls the volume adjustment unit 52 and the amplification processing unit 53 to cancel the mute state (S46). In the audio processing unit 36, the DAC 51 performs digital-analog conversion of the audio data, the volume adjustment unit 52 adjusts the volume level of the analog audio signal, and the amplification processing unit 53 amplifies the analog audio signal and outputs it to the speaker. As a result, the left center side audio data Lc is reproduced from the display left speaker SLD, and the right center side audio data Rc is reproduced from the display right speaker SRD (S47).

  As shown in FIG. 9, the system control unit 23 corrects the volume of the left speaker SL, the right speaker SR, the center speaker SC, the low frequency speaker SSW, the surround left speaker SSL, and the surround right speaker SSR from the speaker setting table of FIG. The level is read, and the volume correction level is added to the volume level of the master volume to calculate the volume level of each speaker. Then, the system control unit 23 sets the volume level of each speaker of the volume adjustment unit 43 to the calculated volume level (S28).

  The system control unit 23 reads out the delay times for the left speaker SL, right speaker SR, center speaker SC, low-frequency speaker SSW, surround left speaker SSL, and surround right speaker SSR from the speaker setting table of FIG. The readout delay time, left audio data L, right audio data R, central audio data C, low frequency audio data SW, surround left audio data SL, and surround right audio data SR are instructed to be delayed and output (S29). . In response to an instruction from the system control unit 23, the DSP 41 delays the audio data of each channel and outputs it to the DAC 42. The DAC 42 converts the audio data from digital to analog, the volume adjusting unit 52 adjusts the volume level of the analog audio signal, and the amplification processing unit 53 amplifies the analog audio signal and outputs it to the speaker. As a result, the left audio data L is reproduced from the left speaker SL, the right audio data R is reproduced from the right speaker SR, the central audio data C is reproduced from the central speaker C, and the surround left audio data SL is reproduced from the surround left speaker SSL. The surround right audio data SR is reproduced and reproduced from the surround right speaker SSR (S30).

  When the left center side audio data Lc and the right center side audio data Rc are not included in the multichannel audio data (NO in S31), or when the multi-channel audio data is not received, the system control unit 23 Then, the original volume level of the volume adjustment unit 52 stored in the memory in S25 is transmitted to the system control unit 33 of the display device 30 (S32). As shown in FIG. 10, when the system control unit 33 of the display device 30 receives the original volume level from the system control unit 23 of the AV amplifier 20 (YES in S48), the volume level of the volume adjustment unit 52 is set to the original volume level. It is set again (S49).

  As described above, according to the present embodiment, the delay time and volume correction level of the display left speaker SLD and display right speaker SRD are set to the left speaker SL, right speaker SR, center speaker SC, low-frequency speaker SSW, and surround left speaker SSL. It can be calculated and stored in association with the delay time and volume correction level of the surround right speaker SSR. When the multi-channel audio data includes audio data of channels to be reproduced by the display left speaker SLD and the display right speaker SRD, the volume level for the display left speaker SLD and the display right speaker SRD is calculated and the display device is displayed. The audio data of these channels can be delayed and output by the delay time for the display left speaker SLD and the display right speaker SRD.

  As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to these embodiment. In order to satisfy the present invention, the display device 30 may include at least one speaker SLD or SRD, and the AV amplifier 20 may be connected to at least one speaker. When the delay time is 0 ms and the sound volume correction level is 0 dB, the value may not be registered in the speaker setting table of FIG. Taking this into account, it is described as “calculate and store at least one of delay time and volume correction level”. The channel of the audio data included in the multichannel audio data is not limited to the embodiment. For example, the multichannel audio data includes the left audio data L, the right audio data R, the central audio data C, the low frequency audio data SW, and the surround left data. Audio data SL, surround right audio data SR, left outer audio data Lw, and right outer audio data Rw are included, the left audio data L is reproduced by the display left speaker SLD, and the right audio data R is reproduced by the display right speaker SRD. When the left outer audio data Lw is reproduced with the left speaker SL and the outer right audio data Rw is reproduced with the right speaker SR, or the left outer audio data Lw is reproduced with the display left speaker SLD, and the display right speaker SRD is reproduced. To play the right outside audio data Rw and the left speaker SL Reproducing the audio data L, it can also be carried out as the case of reproducing the right audio data R in the right speaker SR. Similarly, the present invention can be applied to the case where the central audio data C is reproduced by the display left speaker SLD or the display right speaker SRD. Further, the AV amplifier 20 may include the function of the DVD player 10, and in this case, the HDMI receiving unit 21 is not necessary. The present invention can also be applied to a television receiver having the functions of the AV amplifier 20 and the display device 30, and the multi-channel audio data in this case may be TV broadcast audio data. Further, the AV amplifier 20 may receive HDMI data from a receiver instead of the DVD player 10. Also, audio data and test signals transmitted to the display device may be transmitted via an optical digital cable or the like instead of being transmitted via an HDMI cable. In this case, the volume setting command may be transmitted separately via another communication cable. Further, the program may be provided in the form of a program for causing a computer to execute the above operations of the AV amplifier and the display device, and a recording medium on which the program is recorded. Further, a program for only a part of the operation of the AV amplifier may be provided to the AV amplifier in the form of firmware update. Further, it may be provided in the form of an electronic component such as a DSP or a microcomputer in which a program for only a part of the above operation of the AV amplifier is stored.

  The present invention can be suitably employed in an AV amplifier, a television receiver, and the like.

It is a figure which shows arrangement | positioning of AV amplifier 20, the display apparatus 30, and a speaker. 1 is a block diagram showing a configuration of a DVD player 10 and an AV amplifier 20 according to a preferred embodiment of the present invention. 1 is a block diagram showing a configuration of an AV amplifier 20 and a display device according to a preferred embodiment of the present invention. 4 is a block diagram illustrating an audio processing unit 26. FIG. It is a figure which shows a speaker setting table. 4 is a block diagram illustrating an audio processing unit 36. FIG. 5 is a flowchart for explaining automatic speaker setting processing of the AV amplifier 20; 4 is a flowchart illustrating an automatic speaker setting process of the display device 30. 5 is a flowchart for explaining playback processing of the AV amplifier 20; 4 is a flowchart illustrating a playback process of the display device 30. It is a figure which shows the reproduction | regeneration position of each audio | voice data of multichannel audio | voice data.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 DVD player 20 AV amplifier 21 HDMI receiving part 22 HDMI transmission part 23 System control part 26 Audio | voice processing part 30 Display apparatus 31 HDMI receiving part 33 System control part 41 DSP
42 DAC
43 Volume control unit 44 Amplification processing unit 45 Conversion unit

Claims (12)

An audio reproduction system comprising: a display device including at least one first speaker; and an audio processing device capable of connecting the display device and at least one second speaker,
The voice processing device is
A test signal is reproduced from the second speaker, and the test signal is received by a microphone arranged at a listener's position, thereby measuring the arrival time of the test signal of the second speaker and reproduced from the first speaker. Measuring means for measuring a test signal arrival time of the first speaker by receiving a test signal by the microphone;
Based on the test signal arrival time of the first speaker and the test signal arrival time of the second speaker, the delay time of the first channel audio data reproduced from the first speaker and the second speaker are reproduced. Delay time management means for calculating and storing at least one of the delay times of the second channel audio data;
Test signal transmitting means for transmitting the test signal to the display device;
Delay processing means for delaying at least one of the first channel audio data and the second channel audio data included in multi-channel audio data based on a delay time stored in the delay time management means;
First reproduction means for transmitting the first channel audio data to the display device and reproducing the second channel audio data from the second speaker;
The display device is
Second reproduction means for receiving the first channel audio data transmitted from the first reproduction means and reproducing the first channel audio data from the first speaker;
An audio reproduction system comprising: a test signal reproduction unit that receives the test signal transmitted from the test signal transmission unit and reproduces the test signal from the first speaker. The measurement means reproduces a test signal from the second speaker and receives the test signal by the microphone arranged at the listener's position, thereby measuring the volume level at the listener's position of the second speaker. And receiving the test signal reproduced from the first speaker by the microphone to measure the volume level at the listener's position of the first speaker;
The voice processing device is
A volume correction level of the first channel audio data reproduced from the first speaker based on a volume level at the listener's position of the first speaker and a volume level at the listener's position of the second speaker; Volume correction level management means for calculating and storing at least one of the volume correction levels of the second channel audio data reproduced from the second speaker;
Volume level calculating means for calculating the volume level of the first channel audio data and the volume level of the second channel audio data based on the volume correction level stored in the volume correction level management means;
First volume adjusting means for adjusting the volume level of the second channel audio data set to the volume level for the second speaker calculated by the volume level calculating means;
Volume level transmission means for transmitting the volume level for the first speaker calculated by the volume level calculation means to the display device;
The display device is
The audio reproduction system further comprising second volume adjusting means for adjusting the volume level of the first channel audio data, which is set to a volume level for the first speaker transmitted from the volume level transmitting means. The display device transmits the original volume level set in the second volume adjustment unit immediately before being set to the volume level for the first speaker transmitted from the volume level transmission unit to the audio processing device. Further comprising a volume level transmission means;
An original volume level storage means for receiving and storing the original volume level by the voice processing device;
Original volume level return means for returning the original volume level stored in the original volume level storage means to the display device after the measurement means measures the volume level at the listener's position of the first speaker; In addition,
3. The audio reproduction system according to claim 2, wherein when the returned original volume level is received, the volume level of the second volume adjusting unit is set again to the original volume level. A third speaker for reproducing the third channel audio data included in the multi-channel audio data can be further connected to the audio processing device;
Speaker determination means for determining whether or not the audio processing device can use the first speaker;
When it is determined that the first speaker cannot be used, the delay time management unit is configured to determine the second speaker based on the test signal arrival time of the second speaker and the test signal arrival time of the third speaker. Calculating and storing at least one of a delay time of the second channel audio data reproduced from two speakers and a delay time of the third channel audio data reproduced from the third speaker;
When it is determined that the first speaker can be used, the delay time management means performs a test signal arrival time of the first speaker, a test signal arrival time of the second speaker, and a test of the third speaker. Based on the signal arrival time, the delay time of the first channel audio data reproduced from the first speaker, the delay time of the second channel audio data reproduced from the second speaker, and the reproduction from the third speaker The sound reproduction system according to claim 1, wherein at least one of the delay times of the third channel sound data to be calculated is calculated and stored. A third speaker for reproducing the third channel audio data included in the multi-channel audio data can be further connected to the audio processing device;
Speaker determination means for determining whether or not the audio processing device can use the first speaker;
When it is determined that the first speaker is unusable, the volume correction level management means is configured to control the volume level at the listener position of the second speaker and the volume level at the listener position of the third speaker. And calculating at least one of a volume correction level of the second channel audio data reproduced from the second speaker and a volume correction level of the third channel audio data reproduced from the third speaker. Remember,
When it is determined that the first speaker can be used, the volume correction level management means includes a volume level at the listener position of the first speaker, and a volume level at the listener position of the second speaker. The volume correction level of the first channel audio data reproduced from the first speaker based on the volume level of the third speaker at the listener's position, and the second channel audio reproduced from the second speaker. The sound reproduction system according to claim 2, wherein at least one of a sound volume correction level of data and a sound volume correction level of the third channel sound data reproduced from the third speaker is calculated and stored. An audio reproduction system comprising: a display device including at least one first speaker; and an audio processing device capable of connecting the display device and at least one second speaker,
The voice processing device is
A test signal is reproduced from the second speaker, and the test signal is received by a microphone arranged at the listener's position, thereby measuring a volume level at the listener's position of the second speaker, and the first speaker. Measuring means for measuring the volume level at the listener's position of the first speaker by receiving a test signal reproduced from the microphone;
Based on the volume level at the listener's position of the first speaker and the volume level at the listener's position of the second speaker, the volume correction level of the first channel audio data reproduced from the first speaker, and Volume correction level management means for calculating and storing at least one of volume correction levels of the second channel audio data reproduced from the second speaker;
Volume level calculating means for calculating the volume level of the first channel audio data and the volume level of the second channel audio data based on the volume correction level stored in the volume correction level management means;
First volume adjusting means for adjusting the volume level of the second channel audio data set to the volume level for the second speaker calculated by the volume level calculating means;
Volume level transmitting means for transmitting the volume level for the first speaker calculated by the volume level calculating means to the display device;
Test signal transmitting means for transmitting the test signal to the display device;
First reproduction means for transmitting the first channel audio data to the display device and reproducing the second channel audio data from the second speaker;
The display device is
The volume level for the first speaker transmitted from the volume level transmitting means is set to a volume level for adjusting the volume level of the first channel sound data, and the first channel sound data is sent from the first speaker. Second reproducing means for reproducing;
An audio reproduction system comprising: a test signal reproduction unit that receives the test signal transmitted from the test signal transmission unit and reproduces the test signal from the first speaker. An audio processing device used in the audio reproduction system according to claim 1,
A test signal is reproduced from the second speaker, and the test signal is received by a microphone arranged at a listener's position, thereby measuring the arrival time of the test signal of the second speaker and reproduced from the first speaker. Measuring means for measuring a test signal arrival time of the first speaker by receiving a test signal by the microphone;
Based on the test signal arrival time of the first speaker and the test signal arrival time of the second speaker, the delay time of the first channel audio data reproduced from the first speaker and the second speaker are reproduced. Delay time management means for calculating and storing at least one of the delay times of the second channel audio data;
Test signal transmitting means for transmitting the test signal to the display device;
Delay processing means for delaying at least one of the first channel audio data and the second channel audio data included in multi-channel audio data based on a delay time stored in the delay time management means;
An audio processing apparatus comprising: first reproduction means for transmitting the first channel audio data to the display device and reproducing the second channel audio data from the second speaker. An audio processing device used in the audio reproduction system according to claim 6,
A test signal is reproduced from the second speaker, and the test signal is received by a microphone arranged at the listener's position, thereby measuring a volume level at the listener's position of the second speaker, and the first speaker. Measuring means for measuring the volume level at the listener's position of the first speaker by receiving a test signal reproduced from the microphone;
Based on the volume level at the listener's position of the first speaker and the volume level at the listener's position of the second speaker, the volume correction level of the first channel audio data reproduced from the first speaker, and Volume correction level management means for calculating and storing at least one of volume correction levels of the second channel audio data reproduced from the second speaker;
Volume level calculating means for calculating the volume level of the first channel audio data and the volume level of the second channel audio data based on the volume correction level stored in the volume correction level management means;
First volume adjusting means for adjusting the volume level of the second channel audio data set to the volume level for the second speaker calculated by the volume level calculating means;
Volume level transmitting means for transmitting the volume level for the first speaker calculated by the volume level calculating means to the display device;
Test signal transmitting means for transmitting the test signal to the display device;
An audio processing apparatus comprising: first reproduction means for transmitting the first channel audio data to the display device and reproducing the second channel audio data from the second speaker.   An operation program for a speech processing apparatus, which causes a computer to execute each unit of the speech processing apparatus according to claim 7 or 8. A display device used in the audio reproduction system according to claim 1,
Second reproduction means for receiving the first channel audio data transmitted from the first reproduction means and reproducing the first channel audio data from the first speaker;
A display apparatus comprising: a test signal reproducing unit that receives the test signal transmitted from the test signal transmitting unit and reproduces the test signal from the first speaker. It is a display apparatus used for the audio | voice reproduction | regeneration system of Claim 6, Comprising:
The volume level for the first speaker transmitted from the volume level transmitting means is set to a volume level for adjusting the volume level of the first channel sound data, and the first channel sound data is sent from the first speaker. Second reproducing means for reproducing;
A display apparatus comprising: a test signal reproducing unit that receives the test signal transmitted from the test signal transmitting unit and reproduces the test signal from the first speaker.   An operation program for a display device, which causes a computer to execute each means of the display device according to claim 10 or 11.

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