JP2019217887A - Sound output control device, sound output control system, and sound output control program - Google Patents

Abstract

To select a sound output path where sound data is outputted from plural sound output paths which a sound reproduction device has.SOLUTION: A music determination part 16b determines whether plural music information acquired from plural sound output paths relate to a same music or not. A sound determination part 16c determines existence or absence of sound data in each of the plural sound output paths in the case that plural pieces of music information relate to a same music. A path selection part 16d selects a sound output path, which is determined by the sound determination part 16c that sound data is existent, as a sound output path for outputting to a speaker 30 in the case that the sound output path, which is selected as the sound output path for outputting to the speaker 30, and the sound output path, which is determined by the sound determination part 16c that sound data is existent, are not coincident with each other.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an audio output control device, an audio output control system, and an audio output control program for controlling the output of audio reproduced by an audio reproducing device.

  The in-vehicle electronic device according to Patent Literature 1 is configured such that when a first audio signal included in multimedia information received from the outside through a communication line and a second audio signal read from a storage medium compete with each other, According to the determined rules, either the first audio signal or the second audio signal is selected and reproduced.

JP 2009-274580 A

  Some audio playback devices having a plurality of audio output paths output audio data from all of the plurality of audio output paths, and output audio data only to one of the plurality of audio output paths. There are things to do. In an audio reproducing apparatus that outputs audio data only to one audio output path among a plurality of audio output paths, if audio data is not output from an audio output path selected by a user, a state of silence occurs. There were challenges.

  The on-vehicle electronic device according to Patent Literature 1 selects an audio signal to be reproduced when audio signals of different contents output from different sound sources compete with each other, and a plurality of audio outputs included in one audio reproducing device. It does not select an audio output path from which audio data is actually output in a state where audio data of the same music can be output from the path.

  The present invention has been made to solve the above-described problem, and has an object to select an audio output path from which audio data is output from a plurality of audio output paths of an audio reproducing device. .

  A sound output control device according to the present invention is a sound reproduction device having a plurality of sound output paths, from each of the plurality of sound output paths, a music information acquisition unit that obtains music information about the music being reproduced by the sound reproduction device. A plurality of pieces of music information obtained by comparing the plurality of pieces of music information acquired by the music data acquisition section with the plurality of pieces of music information acquired by the sound data acquisition section for acquiring the audio data of the piece of music being reproduced by the sound reproduction device from each of the plurality of audio output paths. A music determination unit that determines whether or not the plurality of pieces of music information are related to the same music, and a plurality of pieces of music acquired by the audio data acquisition unit when the plurality of pieces of music information are determined to be related to the same music. An audio determination unit that determines the presence or absence of audio data in each of the plurality of audio output paths based on the signal level of the audio data of the audio data; If the audio output path selected as the audio output path to output the sound to the speaker does not match the audio output path determined to have audio data by the audio determination unit, the audio determination unit determines that there is audio data. The audio output path is a path selecting unit that selects the output audio path as an audio output path to be output to the speaker.

  According to the present invention, when it is determined that the plurality of pieces of music information obtained from each of the plurality of sound output paths relate to the same music, the sound output path determined to have sound data is output to the speaker. The audio output path to which the audio data is output can be selected from a plurality of audio output paths of the audio reproducing apparatus.

FIG. 2 is a block diagram illustrating a configuration example of an audio output control system according to Embodiment 1. 6 is a flowchart illustrating an operation example of the audio output control device according to the first embodiment. 5 is a table illustrating an example of selecting an audio output path by a path selection unit according to the first embodiment. FIG. 3 is a diagram illustrating an example of a hardware configuration of the audio output control device according to the first embodiment.

Embodiment 1 FIG.
FIG. 1 is a block diagram illustrating a configuration example of the audio output control system according to the first embodiment. The audio output control system according to the first embodiment includes an audio output control device 10, a speaker 30, a display 40, and an input device 50. The audio output control device 10 includes a connection unit 11, a music information acquisition unit 12, an audio data acquisition unit 13, a display processing unit 14, an audio data output unit 15, and a route determination unit 16.

  The audio reproduction device 20 is a media player device or a smartphone having a music reproduction function. For example, the audio output control device 10, the speaker 30, the display 40, and the input device 50 are mounted on a vehicle, and the audio reproduction device 20 brought into the vehicle by the user is transmitted to the audio output control device 10 wirelessly or by wire. Connected. The audio data of the music reproduced by the audio reproducing device 20 is output as audio from the speaker 30 via the audio output control device 10.

  In the example of FIG. 1, the audio reproduction device 20 and the audio output control device 10 are connected by Bluetooth (registered trademark) as a first audio output path 20a, and a USB (Universal Serial Bus) is used as a second audio output path 20b. Connected by The connection method between the audio reproduction device 20 and the audio output control device 10 is not limited to the above-mentioned Bluetooth (registered trademark) and USB, but may be a wireless LAN (Local Area Network) or a wired LAN. Good.

  The audio reproduction device 20 outputs device information for identifying the audio reproduction device 20 to the first audio output path 20a and the second audio output path 20b. The device information is a device name, a unique ID, or the like. Further, the audio reproducing device 20 outputs music information on the music being reproduced to the first audio output path 20a and the second audio output path 20b. The music information is a music title, an artist name, an album name, a reproduction time, or the like. Further, the audio reproducing device 20 outputs the audio data of the music being reproduced to at least one of the first audio output path 20a and the second audio output path 20b. As described above, when the first audio output path 20a and the second audio output path 20b are connected at the same time, the audio data of the music being reproduced is transmitted to the audio reproducing apparatus 20 by the first audio output path 20a and the second audio output path. 20b and output to only one of them. On the other hand, the music information is output to both the first audio output path 20a and the second audio output path 20b.

  Hereinafter, the device information, music information, and audio data output to the first audio output path 20a will be referred to as first device information, first music information, and first audio data. The device information, music information, and audio data output to the second audio output path 20b are referred to as second device information, second music information, and second audio data.

  The connection unit 11 includes a first connection unit 11a and a second connection unit 11b. The first connection unit 11a connects to the audio reproducing device 20 through the first audio output path 20a. The second connection unit 11b connects to the audio reproducing device 20 through the second audio output path 20b.

  The music information acquisition unit 12 includes a first music information acquisition unit 12a and a second music information acquisition unit 12b. The first music information acquisition unit 12a acquires the first device information and the first music information through the first connection unit 11a, and outputs the first device information and the first music information to the display processing unit 14. The second music information acquisition unit 12b acquires the second device information and the second music information through the second connection unit 11b, and outputs them to the display processing unit 14.

  The audio data acquisition unit 13 includes a first audio data acquisition unit 13a and a second audio data acquisition unit 13b. The first audio data acquisition unit 13a acquires the first audio data through the first connection unit 11a, and outputs the first audio data to the audio data output unit 15. The second audio data acquisition unit 13b acquires the second audio data through the second connection unit 11b, and outputs the second audio data to the audio data output unit 15.

  The display processing unit 14 receives information on the audio output path selected by the user from the input device 50. The display processing unit 14 outputs the music information obtained from the audio output path selected by the user to the display 40, and causes the display 40 to display the name of the music being reproduced on the screen. For example, when the user selects the first audio output path 20a, the display processing unit 14 outputs the first music information received from the first music information acquisition unit 12a to the display 40.

  The audio data output unit 15 receives information on the audio output path selected by the user from the input device 50. The audio data output unit 15 outputs the audio data acquired from the audio output path selected by the user to the speaker 30, and causes the speaker 30 to output the music being reproduced. For example, when the user selects the first audio output path 20a, the audio data output unit 15 outputs the first audio data received from the first audio data acquisition unit 13a to the speaker 30.

  As described above, when the first audio output path 20a and the second audio output path 20b are connected at the same time, the audio data of the music being reproduced is transmitted to the audio reproducing apparatus 20 by the first audio output path 20a and the second audio output path. 20b and output to only one of them. When the audio reproducing device 20 can output the audio data only to the second audio output path 20b, when the user selects the first audio output path 20a, the audio data is not output from the speaker 30 and the sound is silent. Therefore, the path determination unit 16 of the audio output control device 10 automatically selects the audio output path from which the audio data is output. In addition, the audio output control device 10 can switch from the audio output path without the audio data selected by the user to the audio output path with the audio data, and can notify the user of the switching before the switching. I do.

  Hereinafter, a method of selecting an audio output path by the path determination unit 16 will be described. The route determination unit 16 includes a device determination unit 16a, a music determination unit 16b, a voice determination unit 16c, and a route selection unit 16d.

  FIG. 2 is a flowchart illustrating an operation example of the audio output control device 10 according to the first embodiment. When the audio reproduction device 20 starts reproducing music while the first audio output path 20a and the second audio output path 20b are connected to the audio reproduction device 20 at the same time, the audio output control device 10 shown in FIG. The operation shown in the flowchart of FIG. 2 is started, and after the start, the operation shown in the flowchart of FIG.

  In step ST1, the device determination unit 16a acquires the first device information from the first music information acquisition unit 12a and acquires the second device information from the second music information acquisition unit 12b via the display processing unit 14. The device determining unit 16a compares the first device information and the second device information to determine whether the same sound reproducing device 20 is connected to the first sound output path 20a and the second sound output path 20b. Then, the determination result is output to the music determination unit 16b.

  When the device determination unit 16a determines that the audio reproduction device 20 connected to the first audio output path 20a is different from the audio reproduction device 20 connected to the second audio output path 20b (step ST2) “NO”), the route determination unit 16 ends the operation illustrated in the flowchart of FIG. On the other hand, when the device determination unit 16a determines that the same audio reproduction device 20 is connected to the first audio output path 20a and the second audio output path 20b (“YES” in step ST2), the music is determined in step ST3. The determination unit 16b acquires the first music information from the first music information acquisition unit 12a and the second music information from the second music information acquisition unit 12b via the display processing unit 14. Then, the music determination unit 16b compares the first music information and the second music information, determines whether the first music information and the second music information are of the same music, and determines the determination result. Is output to the voice determination unit 16c.

  For example, when each item such as a song title and an artist name included in the first song information and each item such as a song name and an artist name included in the second song information completely match, It is determined that the first music information and the second music information are of the same music. Note that the items included in the music information may differ depending on the connection method of the first audio output path 20a and the second audio output path 20b. In this case, when the items commonly included in the first music information and the second music information completely match, the music determination unit 16b determines that the first music information and the second music information have the same music. May be determined.

  When the music determination unit 16b determines that the first music information and the second music information do not relate to the same music (step ST4 "NO"), the path determination unit 16 performs the operation shown in the flowchart of FIG. To end. On the other hand, when the music determination unit 16b determines that the first music information and the second music information relate to the same music (“YES” in step ST4), in step ST5, the voice determination unit 16c outputs Via the data output unit 15, the first audio data is acquired from the first audio data acquisition unit 13a, and the second audio data is acquired from the second audio data acquisition unit 13b. When the signal level of the first audio data is less than a predetermined threshold, the audio determination unit 16c determines that there is no first audio data in the first audio output path 20a. It is determined that there is first audio data in one audio output path 20a. Similarly, the audio determination unit 16c determines that there is no second audio data in the second audio output path 20b when the signal level of the second audio data is less than the above threshold, and when the signal level of the second audio data is equal to or more than the above threshold, It is determined that the second audio data exists in the output path 20b. Then, the sound determination unit 16c outputs the determination result to the route selection unit 16d.

  In step ST6, the route selection unit 16d checks the audio output route currently selected by the display processing unit 14 and the audio data output unit 15. The currently selected audio output path is the audio output path selected by the user, as described above, and the music information currently acquired from the audio output path is displayed on the display 40 and the audio output path is selected. The audio data obtained from the route is output as audio from the speaker 30.

  In step ST7, the route selection unit 16d determines whether the voice output route determined to have voice data by the voice determination unit 16c matches the currently selected voice output route confirmed in step ST6. When the audio output path determined to have audio data matches the currently selected audio output path (“YES” in step ST7), the path selection unit 16d continues the currently selected audio output path. The operation shown in the flowchart of FIG. On the other hand, when the audio output path determined to have audio data does not match the currently selected audio output path (“NO” in step ST7), the path selecting unit 16d determines in step ST8 that the currently selected audio output path Instead of the path, an audio output path determined to have audio data is selected. Then, the route selection unit 16d outputs information on the audio output route selected in step ST8 to the notification unit 17.

  FIG. 3 is a table illustrating an example of selecting an audio output path by the path selection unit 16d according to the first embodiment. For example, when the path in which the audio data exists is only the first audio output path 20a and the currently selected path is also the first audio output path 20a, the path selection unit 16d continues to select the first audio output path 20a. I do. On the other hand, when the path where the audio data is present is only the first audio output path 20a and the currently selected path is the second audio output path 20b, the path selecting unit 16d outputs the currently selected second audio output path 20a. The first audio output path 20a is selected instead of the path 20b. In addition, when the route in which the audio data exists is the first audio output route 20a and the second audio output route 20b, and the currently selected route is the first audio output route 20a, the route selecting unit 16d outputs the first audio output route. The selection of the route 20a is continued.

  In step ST9, the notification unit 17 causes the display 40 to display a notification for prompting the user to switch to the audio output path selected by the path selection unit 16d via the display processing unit 14. Further, the notification unit 17 may output the notification from the speaker 30 via the audio data output unit 15 as sound.

  In step ST10, when the user who has received the notification prompting the switching of the audio output path instructs to switch the audio output path by operating the input device 50, the input device 50 outputs information indicating the instruction to the audio data output. Output to the section 15 and the display processing section 14. When the information indicating this instruction is received from the input device 50 (“YES” in step ST10), the audio data output unit 15 and the display processing unit 14 switch the audio output path in step ST11. For example, when switching from the currently selected second audio output path 20b to the first audio output path 20a is instructed, the audio data output unit 15 converts the first audio data received from the first audio data acquisition unit 13a. Output to the speaker 30. Further, the display processing unit 14 outputs the first music information received from the first music information acquisition unit 12a to the display 40. On the other hand, when the audio data output unit 15 and the display processing unit 14 do not receive an instruction to switch the audio output path even after the predetermined time has elapsed from the time of notification in step ST9 (“NO” in step ST10), FIG. The operation shown in the flowchart of FIG.

  In the flowchart of FIG. 2, when the route selecting unit 16d selects an audio output route different from the currently selected audio output route, the notifying unit 17 notifies the user to switch, but the notification is performed. It is not necessary. If the notification is not performed, the route selection unit 16d selects the voice output route different from the currently selected voice output route in step ST8, and switches the voice output route to the selected voice output route. Instruct 14. The audio data output unit 15 and the display processing unit 14 switch the audio output path according to the instruction.

  When the audio output control device 10 periodically performs the operation shown in the flowchart of FIG. 2, the audio output control device 10 automatically automatically operates every time the audio reproduction device 20 switches the audio output path for outputting the audio data. Switching to an audio output path having audio data or notification of the switching to the user can be performed.

  Further, in the first embodiment, the case where the number of audio output paths is two is exemplified, but three or more audio output paths may be provided. In that case, the connection unit 11 includes three or more first connection units 11a and the like, the music information acquisition unit 12 includes three or more first music information acquisition units 12a and the like, and the audio data acquisition unit 13 acquires the first audio data acquisition and the like. Three or more parts 13a are provided.

  When there is one audio output path including audio data among three or more audio output paths, the path selection unit 16d selects that audio output path. On the other hand, when there are two or more audio output paths having audio data among the three or more audio output paths, the path selecting unit 16d outputs, for example, audio output from two or more audio output paths having audio data. The user selects the route with the highest priority, or causes the user to select one voice output route from two or more voice output routes having voice data. For example, the route selection unit 16d may set a higher priority as the communication quality of the audio output route is higher, or may set a higher priority as the quality of the audio data of the audio output route is higher. The priority of the audio output path for each connection method may be set in advance for the path selection unit 16d.

Lastly, a hardware configuration of the audio output control device 10 according to the first embodiment will be described. FIG. 4 is a diagram illustrating a hardware configuration example of the audio output control device 10 according to the first embodiment.
The connection unit 11 in the audio output control device 10 is a communication device 100 that communicates with the audio reproduction device 20 by a connection method such as Bluetooth (registered trademark) and USB. The functions of the music information acquisition unit 12, the audio data acquisition unit 13, the display processing unit 14, the audio data output unit 15, the route determination unit 16, and the notification unit 17 in the audio output control device 10 are realized by a processing circuit. That is, the audio output control device 10 includes a processing circuit for realizing the above functions. The processing circuit is realized by the processor 101 executing a program stored in the memory 102.

  The functions of the music information acquisition unit 12, the audio data acquisition unit 13, the display processing unit 14, the audio data output unit 15, the route determination unit 16, and the notification unit 17 are realized by software, firmware, or a combination of software and firmware. You. Software or firmware is described as a program and stored in the memory 102. The processor 101 implements the function of each unit by reading and executing a program stored in the memory 102. That is, the audio output control device 10 includes a memory 102 for storing a program that, when executed by the processor 101, results in executing the steps shown in the flowchart of FIG. Further, this program causes a computer to execute the procedure or method of the music information acquisition unit 12, the audio data acquisition unit 13, the display processing unit 14, the audio data output unit 15, the route determination unit 16, and the notification unit 17. It can also be said.

Here, the processor 101 is a CPU (Central Processing Unit), a processing device, an arithmetic device, a microprocessor, or the like.
The memory 102 may be a nonvolatile or volatile semiconductor memory such as a RAM (Random Access Memory), a ROM (Read Only Memory), an EPROM (Erasable Programmable ROM), or a flash memory, or a hard disk or a flexible disk. May be used, or an optical disc such as a CD (Compact Disc) or a DVD (Digital Versatile Disc) may be used.

  As described above, the audio output control device 10 according to the first embodiment includes the music information acquisition unit 12, the audio data acquisition unit 13, the music determination unit 16b, the audio determination unit 16c, and the route selection unit 16d. The music information acquisition unit 12 acquires music information relating to the music being reproduced by the audio reproduction device 20 from each of the plurality of audio output paths of the audio reproduction device 20 having the plurality of audio output paths. The audio data acquisition unit 13 acquires, from each of the plurality of audio output paths, audio data of a music piece being reproduced by the audio reproduction device 20. The music determination unit 16b compares the plurality of pieces of music information acquired by the music information acquisition unit 12 and determines whether the plurality of pieces of music information are related to the same music. When the music determination unit 16b determines that the plurality of pieces of music information are related to the same music, the sound determination unit 16c determines the plurality of pieces of sound information based on the signal levels of the plurality of sound data acquired by the sound data acquisition unit 13. The presence or absence of audio data in each of the audio output paths is determined. The route selection unit 16d includes a voice output route selected as a voice output route for outputting voice data to the speaker 30 from a plurality of voice output routes, and a voice output determined to have voice data by the voice determination unit 16c. If the path does not match, the audio output path determined to have audio data by the audio determination unit 16c is selected as the audio output path to be output to the speaker 30. Thus, the audio output control device 10 can select an audio output path from which the audio data is output from the plurality of audio output paths of the audio reproduction device 20.

  The audio output control device 10 according to the first embodiment includes an audio data output unit 15 that outputs audio data of the audio output path selected by the path selection unit 16d to the speaker 30. Thereby, the audio output control device 10 can automatically switch from the audio output path without the audio data selected by the user to the audio output path with the audio data.

  Further, the audio output control device 10 according to the first embodiment includes a notifying unit 17 that notifies the user of a switch to the audio output path selected by the path selecting unit 16d. Thus, the audio output control device 10 can switch to the audio output path selected by the path selecting unit 16d after receiving the permission of the user. In addition, when there are two or more audio output paths selected by the path selection unit 16d, the audio output control device 10 can switch to an audio output path desired by the user.

  In the audio output control system according to the first embodiment, the audio output control device 10, the speaker 30 that outputs the audio data of the audio output path selected by the audio output control device 10, and the audio output control device 10 are selected. A display 40 for displaying music information of the audio output path. Accordingly, the audio output control system can automatically switch from the audio output path without the audio data selected by the user to the audio output path with the audio data, and can prevent a silent state.

  In the present invention, within the scope of the invention, it is possible to modify any of the components of the embodiment or omit any of the components of the embodiment.

  Reference Signs List 10 audio output control device, 11 connection unit, 11a first connection unit, 11b second connection unit, 12 music information acquisition unit, 12a first music information acquisition unit, 12b second music information acquisition unit, 13 audio data acquisition unit, 13a first audio data acquisition unit, 13b second audio data acquisition unit, 14 display processing unit, 15 audio data output unit, 16 route determination unit, 16a device determination unit, 16b music determination unit, 16c audio determination unit, 16d route selection Unit, 17 notification unit, 20 sound reproduction device, 30 speaker, 40 display, 50 input device.

Claims (6)

A music information acquisition unit that acquires music information about the music being played by the audio playback device, from each of the plurality of audio output routes of the audio playback device having a plurality of audio output paths,
From each of the plurality of audio output paths, an audio data acquisition unit that acquires audio data of the music being reproduced by the audio reproduction device,
A music determination unit that compares the plurality of pieces of music information acquired by the music information acquisition unit and determines whether the plurality of pieces of music information are related to the same music,
When the plurality of pieces of music information are determined to be related to the same piece of music by the music piece determination unit, the plurality of pieces of audio output paths of the plurality of sound output paths are An audio determination unit that determines the presence or absence of audio data in each;
When the audio output path selected as the audio output path for outputting audio data to the speaker from the plurality of audio output paths does not match the audio output path determined to have audio data by the audio determination unit. An audio output control unit that selects an audio output path determined to have audio data by the audio determination unit as an audio output path to be output to the speaker.   The audio output control device according to claim 1, further comprising an audio data output unit that outputs audio data of an audio output path selected by the path selection unit to the speaker.   The audio output control device according to claim 1, further comprising a notification unit configured to notify a user of a switch to the audio output path selected by the path selection unit.   The audio output path may be a Bluetooth connection path that connects the audio reproduction device and the audio output control device, and a USB connection path that connects the audio reproduction device and the audio output control device. The audio output control device according to any one of claims 1 to 3. An audio output control device according to any one of claims 1 to 4,
A speaker that outputs audio data of an audio output path selected by the audio output control device,
A display for displaying music information of the audio output path selected by the audio output control device. A music information acquiring step of acquiring music information on the music being reproduced by the audio reproducing device, from each of the plurality of audio output routes of the audio reproducing device having a plurality of audio output paths,
From each of the plurality of audio output paths, an audio data obtaining procedure for obtaining audio data of the music being reproduced by the audio reproducing device,
A music determination step of comparing a plurality of pieces of music information acquired by the music information acquisition procedure to determine whether the plurality of pieces of music information are related to the same music,
When it is determined that the plurality of pieces of music information are related to the same music piece by the music piece determination step, the plurality of sound output paths of the plurality of sound output paths are A voice determination procedure for determining the presence or absence of voice data in each;
When the audio output path selected as the audio output path for outputting audio data to the speaker from the plurality of audio output paths does not match the audio output path determined to have audio data by the audio determination procedure. An audio output control program for causing a computer to execute a path selection step of selecting, as an audio output path to be output to the speaker, an audio output path determined to have audio data by the audio determination step.

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