JP5052241B2 - On-vehicle voice processing apparatus, voice processing system, and voice processing method - Google Patents

Description

  The present invention relates to an audio processing technique for an on-vehicle audio processing apparatus.

  There is a system that can communicate between a plurality of vehicles using a telephone line or the like. For example, if a hands-free telephone is used, it is possible to easily communicate between vehicles.

JP 2007-13838 A

  However, simply using a conventional telephone function and outputting sound from another vehicle from a speaker lacks a sense of reality. In particular, since individual private spaces are formed in the vehicle, it is difficult to realize the existence of the opponent even if the sound from other vehicles is simply output.

  An object of the present invention is to enable more realistic dialogue in communication between vehicles.

  In order to solve the above problems, in the present invention, the virtual sound source position of the voice of the speaker in the sound field of the listener is determined according to the position of the vehicle and the seat position of the speaker.

For example, the first aspect of the present invention is an in-vehicle audio processing device that is mounted on a first vehicle and can communicate with the in-vehicle device of the second vehicle, and acquires the position of the second vehicle. The sound acquired in the second vehicle in a sound field formed by a position acquisition means, a sound acquisition means for acquiring sound acquired in the second vehicle, and a speaker array comprising a plurality of speakers. virtual sound source, as formed in the direction of the position of the second vehicle, and processing the audio acquired in the second vehicle, and audio output means for outputting by the speaker array, the second The sound separation means for separating the sound acquired in the vehicle for each sound source, and the sound at the sound source position corresponding to a predetermined seat position in the vehicle from the sounds separated by the sound separation means Voice extraction means for extracting; For example, the audio output unit outputs audio extracted by the audio extraction unit in the speaker array.

  According to a second aspect of the present invention, there is provided an in-vehicle voice processing device that is mounted on the first vehicle and can communicate with the in-vehicle device of the second vehicle, and is acquired in the second vehicle and is a sound source. In a sound field formed by sound acquisition means for acquiring sound that is separated for each position and that is associated with the seat position, and a speaker array that includes a plurality of speakers, a virtual sound source of the sound that is associated with the seat position Is provided with sound output means for processing sound for each seat position and outputting the sound from the speaker array so as to be formed at the seat position of the first vehicle corresponding to the seat position.

According to a third aspect of the present invention, there is provided an audio processing system capable of transmitting and receiving audio between the first vehicle and the second vehicle, wherein the audio acquired in the first vehicle is transmitted for each sound source. In a sound field formed by a speaker array comprising a plurality of speakers, a sound separation means for separating the sound into sound sources, a means for obtaining a sound associated with a seat position from the sound at each sound source position obtained by the sound separation means, The sound for each seat position is processed so that a virtual sound source of the sound associated with the seat position is formed at the seat position of the second vehicle corresponding to the seat position, and output by the speaker array Voice output means.

  An embodiment of the present invention will be described below with reference to the drawings.

<First Embodiment>
FIG. 1 is a schematic configuration diagram of an in-vehicle audio processing apparatus 100 to which an embodiment of the present invention is applied. In the present embodiment, the dialogue between the vehicles is performed between a plurality of voice processing devices 100 mounted on each vehicle. In addition, the number is not limited to two, and three or more may simultaneously transmit and receive audio. In this case, it is possible to have a conversation with a plurality of people at the same time as in a conference.

  The audio output device 100 of this embodiment is integrated with a navigation device. As shown in the figure, the sound processing device 100 includes an arithmetic processing unit 1, a display 2, a storage device 3, a microphone array 4, a speaker array 5, a seating sensor 6, an input device 7, and a wheel speed sensor 8. A gyro sensor 9, a GPS (Global Positioning System) receiver 10, and a communication device 15.

  The arithmetic processing unit 1 is a central unit that performs various processes. For example, the current position is detected based on information output from the various sensors 8 and 9 and the GPS receiver 10. Further, the voice input from the microphone array 4 is transmitted to the other in-vehicle device 100 of the other party, and the voice received from the in-vehicle device 100 of the other party is output from the speaker array 5. In addition, the user's input content is identified from the recognized words and phrases.

  The display 2 is configured by a liquid crystal display device or the like, and is a unit that displays graphics information generated by the arithmetic processing unit 1.

  The storage device 3 includes a storage medium such as a CD-ROM, DVD-ROM, HDD, or IC card. This storage medium stores map data and the like.

  The microphone array 4 is a voice input device that acquires voice spoken by the user. The microphone array 4 includes a plurality of microphones having different setting positions. As a result, it is possible to perform sound separation using the difference in sound (delay time, volume, etc.) depending on the sound acquisition position, and the sound source position of each sound can be specified.

  The speaker array 5 is an audio output device for outputting the audio generated by the arithmetic processing unit 1. The speaker array 5 is composed of a plurality of speakers with different installation positions, and outputs sound with varying delay time and volume from each speaker, so that a virtual sound in the sound field can be provided to the listener (listener). The sound source can be localized. Thereby, it is possible to give the listener a feeling as if sound is being output from a position where the sound source is not actually located. In the present embodiment, the presence of the dialogue is improved by using this.

  The seating sensor 6 is composed of a pressure-sensitive sensor or the like, and detects whether or not a passenger is seated in a seat in the vehicle.

  FIG. 2 is a diagram (a diagram seen from the zenith) for explaining the arrangement of the microphone array 4, the speaker array 5, and the seating sensor 6 in the vehicle 300. As shown in the figure, the microphone array 4 includes a plurality of (at least two, preferably three to four) microphones installed in the vicinity of, for example, a dashboard, a rearview mirror, and a pillar.

  The speaker array 5 is provided for each seat so that a passenger in each seat can listen to the sound directed to each seat. For example, the speaker array 5 is arranged on the headrest of each seat according to the positions of the left and right ears of the passenger.

  The seating sensor 6 is arranged on the seat plate of each seat 301, and detects whether or not it is in a seated state based on the weight of the passenger.

  Returning to FIG. The input device 7 is a unit that receives an instruction from a user. The input device 5 includes a hard switch such as a scroll key and a scale change key, a joystick, a touch panel pasted on a display, and the like.

  The sensors 8 and 9 and the GPS receiver 10 are used for detecting the current location (own vehicle position).

  The communication device 15 is a device for communicating with the voice processing device 100 mounted on another vehicle. The communication device 15 may use a telephone line or may use the Internet. Further, it may be connected to a mobile phone for communication.

  FIG. 3 is a functional block diagram of the arithmetic processing unit 1.

  As illustrated, the arithmetic processing unit 1 includes a user operation analysis unit 41, a current position calculation unit 42, a navigation processing unit 43, a voice acquisition unit 44, a voice separation unit 45, a sound field setting unit 46, An audio processing unit 47, an audio output unit 48, and a communication unit 49 are provided.

  The user operation analysis unit 41 receives a request from the user input to the input device 7, analyzes the request content, and controls each unit of the arithmetic processing unit 1 so that processing corresponding to the request content is executed. To do.

  The current position calculation unit 42 obtains the current position from the outputs of the sensors 8 and 9 and the GPS receiver 10. For example, the position of the vehicle on the map is obtained by map matching using map data.

  The navigation processing unit 43 searches for a recommended route connecting between two designated points (current location, destination), or displays the recommended route on the display 2 to perform route guidance.

  The voice acquisition unit 44 performs processing for acquiring voice uttered by the speaker via the microphone array 4.

  The sound separation unit 45 separates the sound (mixed sound) output from the plurality of sound sources acquired by the microphone array 4 into sound for each sound source position. The sound separation unit 45 stores in advance the positions of the microphones constituting the microphone array 4, and specifies the sound source position on the basis of the positions of the microphones. Note that the voice separation method will not be described in detail because a known method can be used.

  The sound field setting unit 46 performs a process of determining a sound field configuration (virtual sound source position, sound to be emitted, sound volume, etc.) realized for the listener by the sound output from the speaker array 5.

  The sound processing unit 47 performs processing for processing sound output to each speaker constituting the speaker array 5 so that the sound field determined by the sound field setting unit 46 is realized by the speaker array 5. The sound processing unit 47 stores in advance the positions of the speakers constituting the speaker array 5, and processes the sound so that a sound field is formed with reference to the positions of the speakers. A method for forming a virtual sound source in the sound field will not be described in detail because a known method can be used.

  The audio output unit 48 transmits the audio processed by the audio processing unit 47 and to be output from each speaker to the speaker array 5 and executes audio output.

  The communication unit 49 performs processing that mediates transmission / reception of information with the other audio processing device 100 via the communication device 15.

  As shown in FIG. 1, the arithmetic processing unit 1 includes a CPU (Central Processing Unit) 11 that executes various processes such as numerical calculation and control of each device, and map data and arithmetic data read from the storage device 3. This is achieved by a computer system including a RAM (Random Access Memory) 12 that stores information, a ROM (Read Only Memory) 13 that stores programs and data, and an interface 14 that exchanges information with the outside. Each functional unit of the arithmetic processing unit 1 described above is achieved by executing a program loaded into the memory by the CPU. Note that the audio processing may be performed by a dedicated DSP (Digital Signal Processor).

  [Description of Operation] Next, the operation from the utterance to the reception performed between the plurality of speech processing apparatuses 100 having the above-described configuration will be described.

  FIG. 4 is a flowchart of such processing.

  Here, the operation will be described separately for the voice processing apparatus 100 on the speaker side and the voice processing apparatus 100 on the receiver side. Of course, depending on which vehicle passenger is the speaker, the speech processing apparatus 100 may be the speaker side or the receiver side.

  This flow is started when the conversation mode is set between the plurality of speech processing apparatuses 100.

  First, the voice acquisition unit 44 of the voice processing apparatus 100 on the speaker side acquires the voice of the speaker via the microphone array 4 (S11). Next, the communication unit 49 of the voice processing apparatus 100 on the speaker side transmits the acquired voice to the voice processing apparatus 100 on the receiving side together with the current position calculated by the current position calculation unit 42 (S12).

  In response to this, the communication unit 49 of the speech processing apparatus 100 on the receiver side acquires the speech of the speaker and the current position of the vehicle on the speaker side transmitted from the speech processing apparatus 100 on the speaker side (S13). ).

  Next, the sound field setting unit 46 of the voice processing apparatus 100 on the receiver side sets the configuration of the sound field (S14). FIG. 5 is a diagram for explaining the configuration of the sound field. The sound field setting unit 46 sets the configuration of the sound field 510 based on the relationship 500 between the current position of the host vehicle (the speaker's vehicle) and the current position of the partner vehicle (the speaker's vehicle). Specifically, the virtual sound source 512 (or 513) of the speaker's voice is set at a position corresponding to the current position of the speaker's vehicle 502 (or 503) with the position of the own vehicle 501 as the center 511 of the sound field 510. To configure the sound field 510. Further, the volume of the voice of the speaker is set so as to decrease as the distance L1 (or L2) between the vehicles increases.

  That is, as in the example of FIG. 5, if there is a vehicle 502 on the speaker side diagonally forward to the host vehicle 501, the virtual sound source 512 of the voice of the passenger of the vehicle 502 is the center of the sound field ( It is set diagonally forward right with respect to its own position) 511. On the other hand, if there is a vehicle 503 on the speaker side diagonally to the left, the virtual sound source 513 of the voice of the passenger of the vehicle 503 is set to the left diagonally behind the center (own position) 511 of the sound field. The Further, since the volume of the voice of the speaker is set so that the voice from the vehicle farther from the own vehicle becomes lower, in the example of FIG. It is set to be smaller than the voice from.

  Note that the actual loudness of the speaker is not always constant. If there is a variation in the loudness of the speaker's actual voice, the meaning of adjusting the sound volume in accordance with the distance between the vehicles is reduced. Therefore, the sound field setting unit 46 may adjust the sound received from the speaker side according to the distance between the vehicles after temporarily normalizing the sound volume to a predetermined sound volume.

  Next, the sound processing unit 47 processes the sound to be output to each speaker constituting the speaker array 5 so that the sound field set by the sound field setting unit 46 is reproduced. (S15).

  Then, the audio output unit 48 outputs the audio processed by the audio processing unit 47 and to be output to each speaker constituting the speaker array 5 to the speaker array 5, thereby realizing audio output (S16). Thereby, the listener can listen to the utterance contents of the speaker.

  The operation from utterance to reception has been described above using the flow of FIG. This flow is repeated every time any passenger speaks.

  According to the above-described embodiment, the sound source position of the speaker can be localized at the vehicle position on the speaker side by the sound field formed by the speaker array 5 for the receiver. Therefore, it is possible to give the listener a feeling as if the speaker is speaking from that direction, and a realistic dialogue is realized.

  The above embodiment can be variously modified.

  For example, it is possible to limit the dialogue to only the passengers at a specific seat position, such as the dialogue between drivers only, the dialogue between passengers in the rear seat, and the like.

  FIG. 6 is a flowchart of the interactive operation process in such a case. The flow in FIG. 6 is basically the same as the process shown in FIG. However, in order to extract only the voices of the passengers of a specific seat by voice separation, assuming that the voices of a plurality of passengers are mixed with the “voices of speakers” acquired by the microphone array 4. The process S11 ′ is inserted. In general, in S11 ', the voice separation unit 45 of the voice processing apparatus 100 on the speaker side performs voice separation on the voice acquired in S11 and extracts only the voice at a specific seat position.

  FIG. 7 is a conceptual diagram for explaining such processing.

  First, the voice separation unit 45 uses the voice separation technique (that is, the technique of separating the mixed sound into the voice for each sound source position) to convert the speaker's voice (mixed sound) 700 acquired in S11 into the sound source position. Separated into speech 702 for each 701.

  On the other hand, the voice separation unit 45 holds a correspondence table 710 between the seat position 711 and the space area 712 in the vehicle. Referring to FIG. 2, the internal space of the vehicle 300 corresponds to seat positions (driver position (right front), front passenger seat position (left front), rear right position, rear left position). A3 and A4 are defined. That is, the position in the three-dimensional coordinates in the vehicle belongs to one of the seat spaces A1 to A4.

  Therefore, the voice separation unit 45 associates the voice 702 associated with the sound source position 701 with the seat position 711 using the correspondence table 710 between the seat position 711 and the space area 712. Then, the voice 702 associated with the seat position 711 is acquired.

  Furthermore, the voice separation unit 45 extracts only the voice 702 at a predetermined seat position (for example, driver position). Note that the user can select which seat position voice is to be extracted.

  In S12, the communication unit 49 transmits the voice extracted by the voice separation unit 45 to the voice processing apparatus 100 on the receiving side together with the current position of the vehicle. Subsequent processing is as described above.

  In this way, only the voice of the passenger at the specific seat position can be used for the dialogue. For example, when dialogue between drivers is prioritized, such as when aiming at the same destination with a plurality of vehicles, even if other passengers are speaking, it is certain that other vehicles It can be said to the driver.

  Note that the voice separation process S11 'may be performed by the voice processing apparatus 100 on the receiving side. For example, as in the flow of FIG. 4, the communication unit 49 on the speaker side transmits the voice (mixed sound) of the speaker to the voice processing device 100 on the receiver side. After receiving this, the voice processing apparatus 100 on the receiver side performs voice separation, association with a seat position, and extraction of a voice at a specific seat position, as in S11 'above. Only the extracted voice is output as a voice.

  In S12, when transmitting the voice of the speaker, the communication unit 49 may also transmit the seat position associated with the voice. Then, in the voice processing apparatus 100 on the receiver side, the received information indicating the seat position of the speaker may be displayed on the display device so that the person who is the speaker can be known. Further, the voice output unit 48 of the voice processing apparatus 100 on the receiving side may output the voice only from the speaker array 5 at the seat position corresponding to the received seat position of the speaker. In this way, the conversation can be performed only by the passenger at the set seat position, and the content of the conversation is not heard by the passenger at the other seat position.

  Further, the volume at the time of output on the receiving side can be varied for each seat position of the speaker. For example, the communication unit 49 of the voice output device 100 on the speaker side transmits a plurality of voices associated with the plurality of seat positions to the voice output device 100 on the receiver side together with information on the seat positions. The voice output unit 48 of the voice output device 100 on the receiving side varies the volume of the voice to be output according to the associated seat position. For example, priority is provided and the volume is increased in the order of driver position> passenger seat position> rear right position> rear left position. In this way, it is possible to preferentially listen to the passenger on the receiving side who is likely to speak a highly important content.

<Second Embodiment>
The hardware configuration and functional unit configuration in the second embodiment are similar to those in the first embodiment. Therefore, the description of the overlapping parts is omitted.

  In the present embodiment, the virtual sound source position of the sound in the sound field provided to each listener is set according to the seat position of the speaker and the seat position of the receiver. For example, it is possible for the driver on the receiving side to feel that the voice of the speaker boarding the passenger seat of another vehicle is emitted from the passenger seat side of the own vehicle.

  FIG. 8 is a flowchart showing processing from utterance to reception according to the present embodiment.

  This flow is started when the conversation mode is set between the plurality of speech processing apparatuses 100.

  First, the voice acquisition unit 44 of the voice processing apparatus 100 on the speaker side acquires the voice of the speaker via the microphone array 4 (S21). Next, the voice separation unit 45 performs voice separation on the voice acquired in S21 (S22), and further extracts voice for each seat position in the same manner as shown in FIG. S23). Next, the communication unit 49 of the voice processing apparatus 100 on the speaker side transmits the acquired voice to the voice processing apparatus 100 on the receiving side together with the current position calculated by the current position calculation unit 42 (S24).

  In response to this, the communication unit 49 of the speech processing apparatus 100 on the receiver side transmits the voice of the speaker associated with the seat position transmitted from the speech processing apparatus 100 on the speaker side and the seat position on the speaker side. Are acquired (S25).

  Next, the sound field setting unit 46 of the voice processing apparatus 100 on the receiving side detects whether or not each seat in the own vehicle is in the seated state via the seating sensor 6 (S26).

  Further, the sound field setting unit 46 sets the configuration of the sound field (S27). FIG. 9 is a diagram for explaining the configuration of the sound field. The sound field setting unit 46 sets a different sound field for each speaker array 5 of each seat. Further, the configuration of the sound field is set based on the positional relationship between the seat position in the vehicle on the speaker side of the speaker and the seat position in the vehicle on the receiver side of the receiver. Specifically, the sound field setting unit 46 generates a sound so that the sound virtual sound source associated with the seat position received in S25 is formed at the seat position of the receiving vehicle corresponding to the seat position. Set the field configuration.

  For example, as shown in FIG. 9A, it is assumed that there is a voice in which the passenger in the passenger seat is the speaker in the speaker-side vehicle. When setting the sound field of the driver's seat of the vehicle on the listener side, the sound field setting unit 46 first sets the sound field centered on the driver position. Then, as shown in FIG. 9B, the virtual sound source 800 of the voice of the speaker (passenger in the passenger seat of the vehicle on the speaker side) is set in the direction of the passenger seat position as viewed from the driver position.

By the way, a passenger may already exist at the seat position on the receiver side corresponding to the seat position of the speaker. In such a case, when a virtual sound source is set at the seat position, the voice of the speaker and the voice of the actual passenger are mixed, giving the listener a sense of incongruity. Therefore, the sound field setting unit 46
(1) Among the voices associated with the seat position acquired in S25, for the voice corresponding to the seat position of the unoccupied state of the host vehicle, the seat position is set as the sound source position.
(2) On the other hand, among the voices associated with the seat position acquired in S25, the voice corresponding to the seat position in the seated state of the host vehicle is used for other unseatd seat positions (or predetermined positions ( For example, the ceiling position in the center of the vehicle) is set as the sound source position.

  When the sound field is set in this way, the sound processing unit 47 sets each speaker constituting the speaker array 5 for each speaker array 5 in each seat so that the sound field set by the sound field setting unit 46 is reproduced. The voice to be output to is generated by processing the original voice (S28).

  Then, the audio output unit 48 outputs the audio processed by the audio processing unit 47 to each speaker array 5 to realize audio output (S29). Thereby, the listener can listen to the utterance contents of the speaker.

  The operation from utterance to reception has been described above using the flow of FIG. This flow is repeated every time any passenger speaks.

  According to the second embodiment described above, the sound source position of the speaker is determined based on the positional relationship between the seats of the speaker and the receiver. Therefore, it is possible to give the listener a feeling as if the speaker is present in the corresponding seat of the own vehicle, and a more realistic dialogue can be realized.

  The present embodiment can be variously modified.

  For example, as described in the modification of the first embodiment, the dialogue is limited to only the passengers at a specific seat position, such as the dialogue between the drivers only and the dialogue between the passengers in the rear seat. You can also.

  FIG. 10 is a flowchart of the interactive operation process in such a case. Moreover, FIG. 11 is a figure for demonstrating the structure of the sound field in such a case. The flow of FIG. 10 is basically the same as the process shown in FIG. However, in order to extract only the voices of the passengers of a specific seat by voice separation, assuming that the voices of a plurality of passengers are mixed with the “voices of speakers” acquired by the microphone array 4. The process S23 ′ is inserted. That is, the voice separation unit 45 of the voice processing apparatus 100 on the speaker side extracts only the voice at a specific seat position (for example, the driver position) from the voice associated with the seat position acquired in S23. The example of FIG. 11 shows a state in which only the voice of the driver who is the speaker is set to be output to the speaker array 5 on the receiver side. Furthermore, since the driver is already seated at the driver position on the receiver side, the sound field setting unit 46 sets the position of the virtual sound source 801 of the speaker's voice at a predetermined position (center of the ceiling). ing. Note that the user can select which seat position voice is extracted and output.

  In this way, only the voice of the passenger at the specific seat position can be used for the dialogue. For example, when dialogue between drivers is prioritized, such as when aiming at the same destination with a plurality of vehicles, even if other passengers are speaking, it is certain that other vehicles Can tell the driver.

  Note that the processes S22 and S23 related to voice separation (or S23 'in the case of restricting a conversation person) may be performed by the voice processing apparatus 100 on the receiving side. For example, the communication unit 49 on the speaker side transmits the voice (mixed sound) of the speaker to the voice processing apparatus 100 on the receiver side. After receiving this, the voice processing apparatus 100 on the receiver side associates the voice separation with the seat position in the same manner as S22 and S23 (or S23 ′ in the case of restricting the talker) (restricts the talker). If this is the case, the voice of a specific seat position is further extracted). Then, the sound field setting unit 46 assigns only the extracted sound to the sound field. As a result, the voice output unit 48 outputs only the voice of the speaker at the specific seat position.

  Moreover, in the flow of FIG.8 and FIG.10, although it was determined whether it was a seating state, it is not limited to this. The seated state may not be determined according to the user's selection. Then, the position of the virtual sound source may be uniformly assigned to the corresponding seat position regardless of whether or not the user is seated.

  Also, in the sound field setting S27, the sound field setting unit 46 sets the sound source position of the speaker's voice around the speaker so that a round-table conference is performed around the listener's own position (the center of the sound field). It may be assigned. As for how to arrange the sound source position of the voice of the speaker, selection can be received from the user.

  In addition, when a dialogue is performed with a plurality of three vehicles, passengers at the same seating position may speak at the same time. In such a case, the sound field setting unit 46 may set a priority order for each vehicle in advance, and may set the volume of the speaker high according to the priority order. Alternatively, only the voice of the speaker with the highest priority among the speakers who speak at the same time may be output.

  Further, the first embodiment and the second embodiment can be appropriately combined. That is, the sound field setting unit 46 of the voice processing device 100 on the receiver side roughly sets the sound source position of the speaker based on the positional relationship between the vehicles, and further sets the sound source according to the seat position in the vehicle. You can also. Alternatively, when the seat position associated with the voice to be output is a predetermined seat position (for example, driver position), even if the distance between the vehicles is far, the voice of the speaker of another seat is compared with It can also be set to output louder.

FIG. 1 is a schematic configuration diagram of a voice processing apparatus. FIG. 2 is a diagram for explaining the arrangement of the microphone array, the speaker array, and the seating sensor. FIG. 3 is a diagram illustrating a functional configuration of the arithmetic processing unit 1. FIG. 4 is a flowchart of the interactive operation process. FIG. 5 is a diagram for explaining a method of setting the configuration of the sound field. FIG. 6 is a flowchart of the interactive operation process. FIG. 7 is a diagram for explaining processing for obtaining sound for each seat position. FIG. 8 is a flowchart of the interactive operation process. FIG. 9 is a diagram for explaining a method of setting the configuration of the sound field. FIG. 10 is a flowchart of the interactive operation process. FIG. 11 is a diagram for explaining a method of setting the configuration of the sound field.

Explanation of symbols

100: Audio processing device,
DESCRIPTION OF SYMBOLS 1 ... Arithmetic processing part, 2 ... Display, 3 ... Memory | storage device, 4 ... Microphone array, 5 ... Speaker array, 6 ... Seating sensor, 7 ... Input device, 8 ... Wheel speed sensor, 9 ... Gyro, 10 ... GPS receiver 15 ... communication device,
DESCRIPTION OF SYMBOLS 41 ... User operation analysis part, 42 ... Current position calculation part, 43 ... Navigation processing part, 44 ... Voice acquisition part, 45 ... Voice separation part, 46 ... Sound field setting part, 47 ... Sound processing part, 48 ... Voice output part , 49 ... Communication part

Claims (10)

An in-vehicle audio processing device mounted on a first vehicle and capable of communicating with an in-vehicle device of a second vehicle,
Vehicle position acquisition means for acquiring the position of the second vehicle;
Voice acquisition means for acquiring voice acquired in the second vehicle;
In a sound field formed by a speaker array including a plurality of speakers, the second sound source is generated so that a virtual sound source of sound acquired in the second vehicle is formed in the direction of the position of the second vehicle. Voice output means for processing the voice acquired in the vehicle and outputting by the speaker array;
Voice separating means for separating the sound acquired in the second vehicle for each sound source;
Voice extraction means for extracting voice at a sound source position corresponding to a predetermined seat position in the vehicle from the voice separated by the voice separation means;
The in-vehicle audio processing apparatus , wherein the audio output means outputs the audio extracted by the audio extraction means to the speaker array . The in-vehicle voice processing device according to claim 1,
The audio output means is
The in-vehicle audio processing characterized in that as the distance between the first vehicle and the second vehicle increases, the volume of the audio acquired in the second vehicle is reduced and output. apparatus. The in-vehicle voice processing device according to claim 1,
The audio output means is
The sound acquired in the second vehicle is adjusted to a predetermined constant volume, and then the volume is adjusted according to the distance between the first vehicle and the second vehicle. An in-vehicle audio processing device. An in-vehicle audio processing device mounted on a first vehicle and capable of communicating with an in-vehicle device of a second vehicle,
Sound acquisition means for acquiring sound acquired in the second vehicle, separated for each sound source position, and associated with a seat position;
In a sound field formed by a speaker array composed of a plurality of speakers, a virtual sound source of sound associated with the seat position is formed at the seat position of the first vehicle corresponding to the seat position. An in-vehicle audio processing apparatus comprising: audio output means for processing sound for each seat position and outputting the sound by the speaker array. The in-vehicle voice processing device according to claim 4 ,
The voice acquisition means includes
For in-vehicle use, wherein the sound acquired in the second vehicle is separated into sound for each position of the sound source, and then the sound associated with the seat position is obtained by associating the sound with the seat position. Audio processing device. The in-vehicle voice processing device according to claim 4 ,
Seating determination means for determining whether or not the seat in the first vehicle is in a seated state;
The audio output means is
For the sound associated with the second seat position corresponding to the seat determined to be seated by the seating determination means, the virtual sound source is a seat position in the first vehicle that is not seated or predetermined. A vehicle-mounted audio processing apparatus, wherein the sound for each seat position is processed so as to be formed at a different position and output by the speaker array. An in-vehicle audio processing device mounted on a first vehicle and capable of communicating with an in-vehicle device of a second vehicle,
Sound acquisition means for acquiring sound acquired in the second vehicle, separated for each sound source position, and associated with a seat position;
In a sound field formed by a speaker array composed of a plurality of speakers, the seat position is such that a virtual sound source of sound associated with the seat position is formed at a position surrounding the center position of the sound field. An in-vehicle audio processing apparatus comprising: audio output means for processing each sound and outputting the sound by the speaker array. An audio processing system capable of transmitting and receiving audio between the first vehicle and the second vehicle, and an audio separation means for separating audio acquired in the first vehicle for each sound source;
Means for obtaining a sound associated with a seat position from the sound for each position of the sound source obtained by the sound separation means;
In a sound field formed by a speaker array including a plurality of speakers, a virtual sound source of sound associated with the seat position is formed at the seat position of the second vehicle corresponding to the seat position. An audio processing system comprising: audio output means that processes audio for each seat position and outputs the processed audio by the speaker array. An audio processing method for an in-vehicle audio processing device mounted on a first vehicle and capable of communicating with an in-vehicle device of a second vehicle,
A sound acquisition step of acquiring sound acquired in the second vehicle, separated for each sound source position and associated with a seat position;
In a sound field formed by a speaker array composed of a plurality of speakers, a virtual sound source of sound associated with the seat position is formed at the seat position of the second vehicle corresponding to the seat position. A sound output method comprising: processing sound for each seat position and outputting the sound by the speaker array. The sound of the in-vehicle voice processing device mounted on the first vehicle and capable of communicating with the on-vehicle device of the second vehicle
A processing method,
Separating the sound acquired in the first vehicle for each sound source;
Obtaining the voice associated with the seat position from the voice for each position of the sound source obtained by the separation;
In a sound field formed by a speaker array including a plurality of speakers, a virtual sound source of sound associated with the seat position is formed at the seat position of the second vehicle corresponding to the seat position. Processing the sound for each seat position and outputting it by the speaker array;
An audio processing method comprising:

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