JP2005236791A - On-vehicle audio device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an on-vehicle audio device enabling a plurality of speakers disposed on a vehicle to take states of generating both a regeneration sound based on a main audio signal and a regeneration sound based on an interrupted audio signal under the control of sound volume for each. <P>SOLUTION: The onboard audio device includes a plurality of mixers 22-25, each capable of taking a state of transmitting audio signal obtained through mixing processing in regard to the main audio signal and the interrupted audio signal; a plurality of speakers 27, 29, 31 and 33 to which a plurality of audio signals being transmitted from the plurality of mixers are respectively supplied; and an operation control unit 21 for enabling individual control on the mixing processing for the main audio signal and the interrupted audio signal in each of the plurality of mixer sections, selecting a mixing section to which particular control on the mixing processing is to be performed from among the plurality of mixer sections, and performing the particular control in regard to the selected mixer section. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The invention described in the scope of claims of the present application uses a plurality of speaker units provided in a vehicle, and is used by an occupant of the vehicle as a radio broadcast signal receiver, a CD (compact disc) player, or the like. The present invention relates to an on-vehicle acoustic device including a plurality of speaker units and audio signal generating means, which provide a reproduction sound based on an audio signal obtained from a signal generating means.

  In a vehicle, for example, a plurality of common speaker units are arranged for audio signal generating means mounted on it, for example, a radio broadcast signal receiving device, a CD player, a tape player, and the like. From the plurality of speaker units, In many cases, a reproduced sound is generated based on an audio signal obtained from an audio signal generating means that is in an operating state. In such a case, the plurality of speaker units are usually installed at the four corners or in the vicinity of the four corners in the vehicle interior provided in the vehicle, respectively, so that the reproduced sound from the plurality of speaker units is, for example, The sound is heard as a three-dimensional sound based on the left and right stereo sound signals.

  As described above, the sound used in the vehicle is configured to be provided with a plurality of common speaker units for the sound signal generating means such as a radio broadcast signal receiving device, a CD player, a tape player, and the like. The device, that is, the in-vehicle audio device, takes various forms. And as one of them, as a sound signal generating means, a first means for generating a main sound signal for obtaining a reproduced sound such as music on the assumption that all occupants in the vehicle are listeners. And, for example, a second means for generating an interrupt sound signal for obtaining a reproduced sound such as notification information on the assumption that a specific occupant in the vehicle is a listener, which is a driver of the vehicle A plurality of loudspeaker units arranged in the vehicle, for reproducing reproduction information such as music based on the main sound signal obtained from the first means and notification information based on the interruption sound signal obtained from the second means There has been proposed one that is used to obtain sound simultaneously (see, for example, Patent Document 1).

  In such a conventionally proposed in-vehicle audio apparatus, a CD player unit, a radio unit, and a tape unit for reproducing signals from a cassette tape, each of which outputs a left output and a right output. For each of these, four speakers common to them are provided in the vehicle as front and rear right and left speakers and rear and right and left speakers. For example, when the left output and the right output sent from the CD player unit, the radio unit, and the tape unit represent music, they are respectively the left output signal and the right output signal in the stereo audio signal. For example, the CD player unit selectively takes a state in which a left output and a right output representing notification information such as voice guidance are transmitted as interrupt sound signals.

And, for example, a state in which reproduced sounds such as music based on right output and left output, which are main audio signals from the radio unit or the tape unit, are emitted from the front seat right and left speakers and the rear seat right and left speakers. When the right output and left output representing notification information are sent as interrupt sound signals from the CD player section, the right output representing music or the like from the radio section or tape section is output to the front seat right and left speakers. And a left output and a right output and a left output representing notification information from the CD player unit superimposed thereon, or music from a radio unit or a tape unit is displayed on the right and left speakers in the front seat. With right output and left output supplied, announcement information from the CD player unit is superimposed on the right output representing the music from the radio unit or tape unit on the front seat right speaker. Right output representing the is to a state in which it is supplied. At that time, the left and right outputs or the right output representing music or the like from the radio section or the tape section supplied to the front seat right and left speakers or the front seat right speaker is subjected to attenuation processing. As a result, playback of music, etc. based on the right and left outputs, which are the main audio signals from the radio section or the tape section, by passengers sitting in the right and left of the front seat or passengers other than those sitting in the right of the front seat Listening to the music, etc. based on the right and left outputs from the radio unit or the tape unit by the passenger seated in the right and left front seats or the right seat in the front seat without interruption. Thus, it is possible to obtain a state in which the reproduced sound such as notification information based on the right output, the left output, or the right output, which is an interrupt sound signal transmitted from the CD player unit, can be heard.
JP-A-7-131882

  In the conventional on-vehicle acoustic device as described above, it is assumed that there are a plurality of occupants of the vehicle, and among those occupants, the driver who sits on the right front seat or the left front seat is a CD. It is assumed that the person who listens to the reproduced sound such as notification information based on the right output or the left output sent as an interrupt signal from the player unit. Therefore, the front seat right and left speakers located in the vicinity of the front seat right and left where the driver sits on either one of the right output and left representing the music or the like as the main audio signal from the radio section or the tape section. A state where the output and the right output and the left output representing the notification information which is an interrupt sound signal from the CD player unit are supplied, or before being positioned in the vicinity of one of the right and left front seats where the driver is seated Notification information in which one of the right and left speakers of the seat is an interrupted audio signal from one of the right output and the left output representing the main audio signal from the radio unit or the tape unit and music and the like and the CD player unit One of the right output and the left output representing the signal is supplied, and the front seat right and left speakers, or the radio unit supplied to one of them is provided. Right output and left output representing music or the like from a tape unit, or damping means are provided for attenuating one of them.

  That is, only a predetermined speaker out of a plurality of speakers arranged in the vehicle is one of right output and left output representing the main audio signal from the radio unit or the tape unit and the CD player unit. Attenuation processing is applied to one of the right output and left output representing the notification information, which is an interrupt audio signal from the left output, and one of the right output and left output representing the music from the radio section or the tape section. It is supposed to be supplied as it is. Therefore, only a passenger who sits on a predetermined one of a plurality of seats in the vehicle, for example, a driver, is disturbed by the reproduced sound such as music based on the right output and the left output from the radio unit or the tape unit. Instead, the user can listen to the reproduced sound such as notification information based on the right output and the left output or the right output sent from the CD player unit.

  However, in an actual vehicle, for example, an interruption for a specific occupant to be listened to without being disturbed by a reproduction sound such as music based on the main audio signal on the assumption that all occupants are to be listened to. An occupant who is desired to be able to listen to reproduced sound such as notification information based on an audio signal is not limited to an occupant who sits on a predetermined one of a plurality of seats in a vehicle, for example, a driver. For example, when the reproduced sound such as notification information is a reproduced sound based on an audio signal representing the content of a conversation transmitted from a mobile phone hands-free device installed in the vehicle, the reproduced sound such as music is not hindered. An occupant who wants to be able to listen to the playback sound of notification information, etc. is a person who is actually going to have a conversation using a mobile phone hands-free device at that time, and a seat on which such person will be seated is predetermined. It cannot be assumed. Therefore, an occupant seated in any of a plurality of seats in a vehicle can be identified without being disturbed by the reproduction sound of music or the like based on a main audio signal on the assumption that all occupants are targeted for listening. An acoustic system installed in a vehicle that can hear reproduced information such as notification information based on an interrupted sound signal intended for a passenger of a vehicle is desired. I don't see any system.

  In view of such a point, the invention described in the claims of the present application is that a plurality of speaker units arranged at different positions in a vehicle have a main audio signal transmitting unit that transmits a main audio signal and an interrupt audio signal. Each of the plurality of loudspeaker units is provided with a reproduction sound based on the main audio signal and a reproduction sound based on the interruption audio signal. It is assumed that the sound can be emitted under the sound volume adjustment for any of the passengers in the vicinity of each speaker unit in the vehicle, so that the reproduction sound such as music based on the main audio signal is hindered. There is also provided an in-vehicle acoustic device capable of listening to reproduced sound such as notification information based on an interrupted audio signal.

  The in-vehicle acoustic device according to any one of claims 1 to 7 in the claims of the present application includes a main audio signal transmission unit, an interrupt audio signal transmission unit, and a main audio signal. A state in which the main audio signal obtained from the signal transmission unit and the interruption audio signal obtained from the interruption audio signal transmission unit are supplied and the audio signal obtained by mixing processing of the main audio signal and the interruption audio signal is transmitted A plurality of mixer units, a plurality of speaker units which are arranged in different parts of the vehicle and are supplied with a plurality of audio signals respectively obtained from the plurality of mixer units, and a plurality of mixer units. Individual control for mixing processing for audio signals and interrupted audio signals is possible, and specific control for mixing processing of a plurality of mixer units should be performed. And selecting, configured and an operation control unit that performs the specific control for the selected the mixer.

  In particular, the in-vehicle acoustic device according to the invention described in claim 4 in the scope of claims of the present application provides a seating state in a plurality of seats in a state where the vehicle includes a plurality of seats respectively corresponding to the plurality of speaker units. An operation control unit that detects and generates a detection output signal corresponding to the position of an occupant in the vehicle, and provides information regarding what should be subjected to specific control of mixing processing among a plurality of mixer units It is assumed that an occupant position detection unit is provided to the vehicle.

  Further, in the in-vehicle acoustic device according to the invention described in claim 5 in the claims of the present application, the specific control for the mixing processing performed for the selected one of the plurality of mixer units is performed by the plurality of mixers. The state in which the interrupt audio signal is transmitted without the main audio signal being transmitted from the selected one of the sections, or the main audio signal and the interrupt audio signal are greater in the latter level than the former level. It is assumed that a state in which an audio signal obtained by mixing is transmitted is set.

  In such an in-vehicle acoustic device according to any one of claims 1 to 7 in the claims of the present application, a plurality of mixer units respectively corresponding to a plurality of speaker units are provided. Provided. Each mixer unit performs mixing processing on the main audio signal from the main audio signal sending unit and the interrupt audio signal from the interrupt audio signal sending unit under the control of the operation control unit, and the resulting audio The signal is sent to the corresponding speaker unit to be supplied after being subjected to processing such as amplification. The mixing process for the main audio signal and the interrupt audio signal in each mixer unit is performed, for example, by mixing each of them as having a predetermined level according to the control by the operation control unit. Depending on the control, the case where one level is set to zero is included, and at that time, only the main audio signal or the interrupt audio signal is transmitted from the mixer.

  Then, for example, as in the case of the in-vehicle acoustic device according to the invention described in claim 4, the operation control unit detects the seating state in the plurality of seats respectively corresponding to the plurality of speaker units from the occupant position detection unit. Based on the detection output signal corresponding to the position of the occupant in the vehicle obtained, the one to be subjected to specific control for the mixing process among the plurality of mixer units is selected, and the mixing process in the selected mixer unit Do specific control about. For the specific control of the mixing process in the selected mixer unit, the main audio signal is sent from the selected mixer unit as in the case of the on-vehicle acoustic device according to the invention described in claim 5, for example. A state in which an interrupt audio signal is transmitted without being transmitted, or a state in which an audio signal obtained by mixing the main audio signal and the interrupt audio signal with the latter level being greater than the former level is transmitted. Is to be set.

  According to the in-vehicle acoustic device according to the invention described in any one of claims 1 to 7 in the claims of the present application described above, under the control of the operation control unit sent from each mixer unit. The audio signal obtained by mixing the main audio signal and the interrupt audio signal is supplied to the corresponding speaker unit after being subjected to processing such as amplification. Based on the audio signal sent from the mixer section, the playback sound based on the main audio signal and the playback sound based on the interrupt audio signal will be emitted as the volume of each is adjusted. For example, based on a detection output signal corresponding to the position of the occupant in the vehicle obtained by detecting the seating state in the plurality of seats respectively corresponding to the plurality of speaker units. The speaker unit corresponding to the mixer unit selected as the specific control for the mixing process is obtained by performing the specific control for the mixing process. For example, the interrupt is not included in the main audio signal. A reproduced sound is generated based on an audio signal obtained by mixing an audio signal that is only an audio signal, or a main audio signal and an interrupted audio signal with the latter level being greater than the former level. The plurality of mixer units are in a state where any of them can be selected by the operation control unit as to be subjected to specific control for mixing processing.

  Therefore, any of the plurality of speaker units can take a state in which the reproduction sound based on the main audio signal and the reproduction sound based on the interrupt audio signal are emitted while the volume of each is adjusted, An audio signal that does not include the main audio signal and is only an interrupted audio signal, or an audio signal obtained by mixing the main audio signal and the interrupted audio signal with the latter level greater than the former level Based on the interrupted sound signal without any of the passengers in the vicinity of each speaker unit in the vehicle being disturbed by the reproduced sound such as music based on the main sound signal. It is possible to listen to the reproduced sound such as notification information based on.

  BEST MODE FOR CARRYING OUT THE INVENTION The best mode for carrying out the invention described in any one of claims 1 to 7 in the scope of claims of the present application will be described with examples described below.

  FIG. 1 shows an example of an on-vehicle acoustic device according to any one of claims 1 to 7 in the claims of the present application, and this example is installed inside a vehicle body of a vehicle.

  In the example shown in FIG. 1, a main audio signal transmission unit 11 and an interrupt audio signal transmission unit 12 are provided. The main audio signal transmitting unit 11 includes an external audio signal input unit 13 to which an external audio signal is supplied as an input signal, a CD player 14, a radio broadcast signal receiving device 15, and a main audio signal selection / separation unit 16. Has been. The interrupt sound signal sending unit 12 includes a radio broadcast signal receiving unit device 15, a traffic information selection receiving unit 17, a navigation device 18, a hands-free device 19, and an interrupt sound signal selecting unit 20. The radio broadcast signal receiver 15 belongs to both the main audio signal transmitter 11 and the interrupt audio signal transmitter 12. The hands-free device 19 in the interrupt audio signal sending unit 12 is equipped with, for example, a mobile phone and a microphone unit connected to the hands-free device 19 to which the mobile phone is attached and a vehicle described later. It can be performed through the provided speaker unit.

  In the main audio signal transmission unit 11, an external audio signal SO supplied thereto is transmitted from the external audio signal input unit 13, and an audio signal SD reproduced from a CD attached thereto from the CD player 14. Is further transmitted from the radio broadcast signal receiving device 15, and the audio signal SR based on the radio broadcast signal from the radio broadcast station, which is selectively received by the radio broadcast signal receiving device 15, is transmitted. These audio signals SO, SD and SR are supplied to the main audio signal selection / separation unit 16.

  The main audio signal selection / separation unit 16 is also supplied with a control signal CM from the operation control unit 21. The main audio signal selection / separation unit 16 receives the audio signal SO from the external audio signal input unit 13, the audio signal SD from the CD player 14, and the radio broadcast signal receiving device 15 in accordance with the control signal CM from the operation control unit 21. Select one of the audio signals SR, separate and form the audio signals SMA, SMB, SMC and SMD from any of the selected audio signals SO, SD and SR, and derive them as the main audio signal To do. In these audio signals SMA to SMD, for example, when the left audio signal, the right front signal, the left rear signal, and the right rear signal of the stereo audio signal are used, the audio signal SMA and the audio signal SMC are the same. In some cases, the signal is the left signal of the stereo audio signal, the audio signal SMB and the audio signal SMD are the same signal and the right signal of the stereo audio signal, all are the same signal, and so on. The audio signals SMA to SMD, which are main audio signals, are continuously provided over a relatively long time, for example, and are sent from the main audio signal sending unit 11.

  In the interrupt voice signal transmission unit 12, the traffic information selection reception unit 17 receives and transmits a traffic information signal DI such as an information signal that conveys traffic information provided by a road traffic information communication system (VICS), for example. , And supplies it to the radio broadcast signal receiver 15. When the traffic information signal DI from the traffic information selection / reception unit 17 is supplied, the radio broadcast signal receiving device 15 replaces the audio signal SR based on the radio broadcast signal from the radio broadcast station, or from the radio broadcast station. In addition to the audio signal SR based on the radio broadcast signal, an audio signal SI based on the traffic information signal DI, for example, representing traffic information is transmitted. In addition, the navigation device 18 sends out an audio signal SN representing, for example, voice guidance for a vehicle occupant, and the hands-free device 19 represents, for example, the voice from the other party in a call using a mobile phone attached thereto. An audio signal SP is transmitted. These audio signals SI, SN, and SP are supplied to the interrupt audio signal selection unit 20.

  A control signal CS from the operation control unit 21 is also supplied to the interrupt audio signal selection unit 20. The interrupt audio signal selection unit 20 follows the control signal CS from the operation control unit 21, the audio signal SI from the radio broadcast signal receiving device 15, the audio signal SN from the navigation device 18, and the audio signal SP from the hands-free device 19. Is selected as an interrupt sound signal SS. The interrupt voice signal SS, for example, provides traffic information, voice guidance, call voice, etc. for a relatively short time, and is sent from the interrupt voice signal sending unit 12.

  Further, in the interrupt audio signal sending unit 12, when the traffic information selection receiving unit 17 is in a state of sending the traffic information signal DI, an operation showing the sending state of the traffic information signal DI from the traffic information selection receiving unit 17 When the state signal RI is obtained and supplied to the operation control unit 21 and the navigation device 18 is in a state of transmitting the audio signal SN, an operation state signal RN representing the transmission state of the audio signal SN from the navigation device 18 is obtained. When it is obtained and supplied to the operation control unit 21 and the hands-free device 19 is in a state of transmitting the audio signal SP, an operation state signal RP representing the transmission state of the audio signal SP from the hands-free device 19 is obtained. Obtained and supplied to the operation control unit 21.

  Audio signals SMA to SMD which are main audio signals sent from the main audio signal sending unit 11 are supplied to the four mixer units 22, 23, 24 and 25, respectively. Further, each of the interrupt sound signals SS sent from the interrupt sound signal sending unit 12 is supplied to each of the four mixer units 22, 23, 24 and 25.

  Further, control signals CA, CB, CC and CD from the operation control unit 21 are also supplied to the four mixer units 22 to 25, respectively. When only the audio signal SMA or the interrupt audio signal SS is supplied in accordance with the control signal CA from the operation control unit 21, the mixer unit 22 sends the audio signal SMA or the interrupt audio signal SS as the output audio signal SOA. When both the audio signal SMA and the interrupt audio signal SS are supplied, the audio signal SMA and the interrupt audio signal SS are mixed and the resulting audio signal is transmitted as the output audio signal SOA. To do. In such a case, the mixing processing for the audio signal SMA and the interrupt audio signal SS is performed, for example, by mixing each of them as having a predetermined level according to the control signal CA from the operation control unit 21. Depending on the control signal CA, the level of one of the audio signal SMA and the interrupt audio signal SS may be set to zero. At that time, the audio signal SMA or the interrupt audio signal SS is sent from the mixer unit 22. Only will be sent.

  When only the audio signal SMB or the interrupt audio signal SS is supplied according to the control signal CB from the operation control unit 21, the mixer unit 23 transmits the audio signal SMB or the interrupt audio signal SS as the output audio signal SOB. When both the audio signal SMB and the interrupt audio signal SS are supplied, the audio signal SMB and the interrupt audio signal SS are mixed, and the resulting audio signal is transmitted as the output audio signal SOB. In such a case, the mixing process for the audio signal SMB and the interrupt audio signal SS is also performed, for example, by mixing both of them as having a predetermined level according to the control signal CB from the operation control unit 21. Depending on the control signal CB, the level of one of the audio signal SMB and the interrupt audio signal SS may be set to zero. At that time, the mixer unit 23 outputs the audio signal SMB or the interrupt audio signal SS. Only will be sent.

  When only the audio signal SMC or the interrupt audio signal SS is supplied according to the control signal CC from the operation control unit 21, the mixer unit 24 transmits the audio signal SMC or the interrupt audio signal SS as the output audio signal SOC. When both the audio signal SMC and the interrupt audio signal SS are supplied, the audio signal SMC and the interrupt audio signal SS are mixed, and the resulting audio signal is transmitted as the output audio signal SOC. In such a case, the mixing process for the audio signal SMC and the interrupt audio signal SS is also performed, for example, by mixing each of them as having a predetermined level according to the control signal CC from the operation control unit 21. Depending on the control signal CC, the level of one of the audio signal SMC and the interrupt audio signal SS may be made zero, and at that time, the audio signal SMC or the interrupt audio signal SS is sent from the mixer unit 24. Only will be sent.

  Furthermore, when only the audio signal SMD or the interrupt audio signal SS is supplied in accordance with the control signal CD from the operation control unit 21, the mixer unit 25 outputs the audio signal SMD or the interrupt audio signal SS as the output audio signal SOD. When both the audio signal SMD and the interrupt audio signal SS are supplied, the audio signal SMD and the interrupt audio signal SS are mixed, and the resulting audio signal is output as the output audio signal SOD. Send out as In such a case, the mixing processing for the audio signal SMD and the interrupt audio signal SS is also performed, for example, by mixing each of them as having a predetermined level according to the control signal CD from the operation control unit 21. Depending on the control signal CD, the level of one of the audio signal SMD and the interrupt audio signal SS may be set to zero. At that time, the mixer unit 25 outputs the audio signal SMD or the interrupt audio signal SS. Only will be sent.

  The output audio signal SOA sent from the mixer unit 22 is amplified by the amplifying unit 26 and supplied to the speaker unit 27, and reproduced audio based on the output audio signal SOA is emitted from the speaker 27. Similarly, the output audio signal SOB sent from the mixer unit 23 is amplified by the amplifying unit 28 and supplied to the speaker unit 29, and the reproduced audio based on the output audio signal SOB is emitted from the speaker 29, and the mixer unit The output audio signal SOC sent out from 24 is amplified by the amplifying unit 30 and supplied to the speaker unit 31, the reproduced audio based on the output audio signal SOC is emitted from the speaker 31, and further sent out from the mixer unit 25. The output audio signal SOD is amplified by the amplifying unit 32 and supplied to the speaker unit 33, and reproduced audio based on the output audio signal SOD is emitted from the speaker 33.

  Thereby, from each of the speaker units 27, 29, 31 and 33, the reproduced sound based on the audio signal SMA, SMB, SMC or SMD, and the interrupt sound according to the contents of the output audio signal SOA, SOB, SOC or SOD. Playback audio based on signal SS, or both audio signal SMA and interrupt audio signal SS, both audio signal SMB and interrupt audio signal SS, audio signal SMC and interrupt audio signal SS, or audio signal A reproduced sound based on both the SMD and the interrupt sound signal SS is obtained.

  For example, as shown in FIG. 2, the speaker units 27, 29, 31, and 33 are four front seats 41 and a right front seat 42 that are four seats provided in a passenger compartment 40 formed inside the vehicle body of the vehicle. , The left rear seat 43 and the right rear seat 44 are respectively installed, the speaker unit 27 is in the vicinity of the left front seat 41, the speaker unit 29 is in the vicinity of the right front seat 42, and the speaker unit 31 is in the vicinity of the left rear seat 43. In addition, the speaker unit 33 is disposed in the vicinity of the right rear seat 44.

  An occupant position detection unit 45 and an operation unit 46 are connected to the operation control unit 21. As shown in FIG. 2, the occupant position detection unit 45 is one of the left front seat 41, the right front seat 42, the left rear seat 43, and the right rear seat 44 to which the speaker units 27, 29, 31 and 33 correspond. Alternatively, two or more occupant seated states are detected, and a detection output signal QS corresponding to the detected seating state is formed and supplied to the operation control unit 21. For example, the operation unit 46 receives an operation by a vehicle occupant, generates an operation output signal QX corresponding to the operation, and supplies the operation output signal QX to the operation control unit 21.

  Under such circumstances, the operation control unit 21 sends the main audio signal selection / separation unit 16 in the main audio signal transmission unit 11 from the external audio signal input unit 13 according to the operation output signal QX from the operation unit 46. The control signal CM for selecting the audio signal SO, the audio signal SD from the CD player 14 or the audio signal SR from the radio broadcast signal receiving device 15 is sent out and supplied to the main audio signal selecting / separating unit 16. As a result, a state in which the audio signals SMA, SMB, SMC, and SMD based on the audio signal SO, the audio signal SD, or the audio signal SR selected according to the control signal CM are transmitted from the main audio signal transmission unit 11 as the main audio signal. Be taken.

  In addition, the operation control unit 21 operates in the operation state signal RI obtained from the traffic information selection receiving unit 17 in the interrupt voice signal sending unit 12, the operation state signal RN obtained from the navigation device 18, or the operation state obtained from the hands-free device 19. When the signal RP is supplied, the audio signal SI from the radio broadcast signal receiver 15, the audio signal SN from the navigation device 18, or the hands is sent to the interrupt signal selector 20 in the interrupt audio signal transmitter 12 accordingly. A control signal CS for selecting the audio signal SP from the free device 19 is transmitted and supplied to the interrupt signal selection unit 20. As a result, the interrupt audio signal transmitting unit 12 is in a state in which the audio signal SI, the audio signal SN, or the audio signal SP selected according to the control signal CS is transmitted as the interrupt audio signal SS.

  Further, the operation control unit 21 controls the control signals CA, CB, CC under the state where the audio signal SI, the audio signal SN, or the audio signal SP is transmitted as the interrupt audio signal SS from the interrupt audio signal transmission unit 12. And the mixing process for the audio signal SMA and the interruption audio signal SS in the mixer unit 22, the mixing process for the audio signal SMB and the interruption audio signal SS in the mixer unit 23, and the audio signal SMC in the mixer unit 24. Control is performed on the mixing process for the interrupt sound signal SS and the mixing process for the sound signal SMD and the interrupt sound signal SS in the mixer unit 25. At that time, the operation control unit 21 determines one or more of the mixer units 22 to 25 according to the detection output signal QS from the occupant position detection unit 45 or the operation output signal QX from the operation unit 46. Are selected as specific controls for the mixing process.

  For example, the seating state of the occupant in the vehicle represented by the detection output signal QS from the occupant position detection unit 45 is that the driver of the vehicle is seated in the right front seat 42, and the left front seat 41 other than the right front seat 42, When at least one of the left rear seat 43 and the right rear seat 44, for example, the left rear seat 43 is also in a state where an occupant is seated, the operation control unit 21 outputs the detection output signal QS at that time. Accordingly, the mixer unit 23 corresponding to the speaker unit 29 disposed in the vicinity of the right front seat 42 or the mixer unit 24 corresponding to the speaker unit 31 disposed in the vicinity of the left rear seat 43 is specified for mixing processing. Is selected as the one to be controlled.

  At this time, the mixer unit 23 corresponding to the speaker unit 29 arranged in the vicinity of the right front seat 42 is selected as a unit on which specific control for the mixing process is to be performed, for example, the interrupt audio signal transmission unit 12. The mixer unit 24 corresponding to the speaker unit 31 arranged in the vicinity of the left rear seat 43 specifies the mixing process when the interrupt audio signal SS transmitted from the audio signal SI is the audio signal SI or the audio signal SN. For example, the hands-free device 19 is used by an occupant seated in the left rear seat 43 when the interrupt sound signal SS sent from the interrupt sound signal sending unit 12 is selected. The audio signal SP obtained by

  As described above, the operation control unit 21 performs specific control on one or two or more of the mixer units 22 to 25 according to the detection output signal QS from the occupant position detection unit 45. In the case where it is selected as a to-be-received, the occupant position detecting unit 45 provides the detection output signal QS with information on what should be subjected to specific control regarding the mixing processing of the mixer units 22 to 25. As a result, the operation control unit 21 is supplied.

  Further, the operation control unit 21 does not respond to the detection output signal QS from the occupant position detection unit 45 but also to one or two of the mixer units 22 to 25 according to the operation output signal QX from the operation unit 46. When selecting at least one of the mixer units 22 to 25, the operation unit 46 performs the specific control on the mixing process of the mixer units 22 to 25 when selecting one or more as the specific control on the mixing process. As an indication of what should be done, the operation control unit 21 is supplied.

  Then, the operation control unit 21 is a control signal CA for performing specific control of the mixer units 22 to 25 which are selected as specific control for the mixing process. , CB, CC and CD. The specific control for the mixing process in such a case is, for example, selected from the mixer units 22 to 25 where the specific control for the mixing process is to be performed, and the output audio signals SOA, SOB, SOC. Alternatively, as SOD, the state in which the interrupt audio signal SS is transmitted without transmitting the audio signal SMA, SMB, SMC or SMD, or the audio signal SMA, SMB, SMC or SMD and the interrupt audio signal SS It is assumed that a state in which a sound signal obtained by mixing with the latter level set higher than the former level is transmitted is set.

  As a result, any one of the speaker units 27, 29, 31 and 33 corresponding to the mixer unit 22 to 25 which is selected as the specific control for the mixing process is arranged in the vicinity. A main voice signal is a driver or a passenger seated in the right front seat 42 or the left rear seat 43 where the speaker unit 29 or the speaker unit 31 corresponding to the mixer unit 23 or the mixer unit 24 is disposed in the vicinity, for example. It is possible to listen to reproduced sounds such as traffic information, voice guidance, and call voice based on the interrupt voice signal SS without being disturbed by reproduced sounds such as music based on the voice signals SMA, SMB, SMC or SMD.

  In the on-vehicle acoustic device according to any one of claims 1 to 7 in the claims of the present application as described above, the plurality of speaker units arranged at different positions in the vehicle are Since the main audio signal transmitting unit for transmitting a signal and the interrupt audio signal transmitting unit for transmitting an interrupted audio signal are provided as common components, any of the plurality of speaker units is used as the main audio signal. Applicable to various vehicles as a sound device convenient for the vehicle occupant, which can take a state in which the reproduced sound based on the interrupt sound signal and the reproduced sound based on the interrupt sound signal can be emitted under the respective volume adjustments. It can be done.

It is a block block diagram which shows an example of the vehicle-mounted acoustic apparatus which concerns on the invention described in any one of Claim 1- Claim 7 in the claim of this application. It is a conceptual diagram with which it uses for description of arrangement | positioning of the several speaker part with which the example shown by FIG. 1 is provided.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 ... Main audio | voice signal transmission part, 12 ... Interrupt audio | voice signal transmission part, 13 ... External audio | voice signal input part, 14 ... CD player, 15 ... Radio broadcast signal receiver, 16. ..Main audio signal selection / separation unit, 17 ... Traffic information selection reception unit, 18 ... Navigation device, 19 ... Hands-free device, 20 ... Interrupt audio signal selection unit, 21 ... Operation control unit, 22-25 ... Mixer unit, 26, 28, 30, 32 ... Amplification unit, 27,29,31,33 ... Speaker unit, 41 ... Left front seat, 42 ... Right front seat, 43 ... left rear seat, 44 ... right rear seat, 45 ... occupant position detection unit, 46 ... operation unit

Claims (7)

A main audio signal transmission unit;
An interrupt audio signal sending unit;
Each is supplied with a main audio signal obtained from the main audio signal sending unit and an interrupt audio signal obtained from the interrupt audio signal sending unit, and by mixing processing for the main audio signal and the interrupt audio signal A plurality of mixer units which are assumed to be in a state of transmitting the obtained audio signal;
A plurality of speaker units that are arranged in different parts of the vehicle and to which a plurality of audio signals sent from the plurality of mixer units are respectively supplied;
Individual control for the mixing process for the main audio signal and the interrupt audio signal in each of the plurality of mixer units is possible, and specific control for the mixing process among the plurality of mixer units is performed. An operation control unit that performs the specific control on the selected mixer unit,
A vehicle-mounted acoustic device comprising:   The vehicle-mounted acoustic device according to claim 1, further comprising an operation unit that provides the operation control unit with information indicating that a specific control for the mixing process among the plurality of mixer units is to be performed. .   A detection output signal corresponding to the position of an occupant in the vehicle is generated, and the detection output signal is used to provide information related to a specific control for the mixing process among the plurality of mixer units. The vehicle-mounted acoustic device according to claim 1, further comprising an occupant position detection unit that supplies the operation control unit.   The vehicle includes a plurality of seats respectively corresponding to the plurality of speaker units, and the occupant position detection unit detects a seating state in the plurality of seats to obtain the detection output signal. The on-vehicle acoustic device according to 3.   Specific control for the mixing process performed on a selected one of the plurality of mixer units is performed without transmitting the main audio signal from the selected one of the plurality of mixer units. A state in which an interrupt audio signal is transmitted, or a state in which an audio signal obtained by mixing the main audio signal and the interrupt audio signal with the latter level being greater than the former level is transmitted; The vehicle-mounted acoustic device according to claim 1, wherein:   The main audio signal transmitting unit includes a plurality of main audio signal generating units and a main audio signal selecting unit for extracting a selected one of the plurality of main audio signals generated by the plurality of main audio signal generating units. The vehicle-mounted acoustic device according to claim 1, comprising:   The interrupt sound signal sending unit extracts a plurality of interrupt sound signal generating means and a selected one of the plurality of interrupt sound signals generated by the plurality of interrupt sound signal generating means. The in-vehicle acoustic device according to claim 1, comprising a selection unit.

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