JP7049803B2 - In-vehicle device and audio output method - Google Patents

Description

The present invention relates to an in-vehicle device, an in-vehicle acoustic system, and an audio output method.

In recent years, there are in-vehicle devices that accept voice input such as voice recognition and hands-free calling by the driver's utterance. In such an in-vehicle device, when receiving a voice input, the influence on the voice input is reduced by internally canceling the voice signal such as music output from the speaker (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2013-201604

However, in the prior art, when the voice signal is canceled, the voice received at the same time through the speaker is deteriorated, and the voice recognition rate may be lowered. Further, it is conceivable to stop the output of the speaker when the voice input is accepted, but in such a case, it is not possible to continuously listen to the voice such as music output from the speaker.

The present invention has been made in view of the above, and an object of the present invention is to provide an in-vehicle device and a voice output method capable of providing an in-vehicle environment suitable for hands-free telephone calls .

In order to solve the above-mentioned problems and achieve the object, the in-vehicle device according to the embodiment includes a detection unit, a reception unit, and a switching unit. The detection unit detects the seating position of the occupant in the vehicle. The reception unit receives voice input by the occupant. When the voice input is received by the reception unit, the switching unit switches the directivity of the speaker according to the seating position detected by the detection unit.

According to the present invention, it is possible to provide an in-vehicle environment suitable for hands-free calling .

FIG. 1 is a diagram showing an outline of an audio output method. FIG. 2 is a block diagram of an in-vehicle acoustic system. FIG. 3 is a diagram illustrating processing by the authentication unit. FIG. 4 is a diagram showing a specific example of switching the output voice. FIG. 5 is a diagram showing a specific example of switching information. FIG. 6 is a diagram showing a specific example of switching output voice during a hands-free call. FIG. 7 is a diagram showing a specific example of processing by the distribution unit. FIG. 8 is a flowchart showing a processing procedure executed by the in-vehicle device. FIG. 9 is a diagram showing a modified example of processing by the switching unit.

Hereinafter, the in-vehicle device, the in-vehicle acoustic system, and the audio output method according to the embodiment will be described in detail with reference to the attached drawings. The present invention is not limited to the embodiments shown below.

First, an outline of the audio output method according to the embodiment will be described with reference to FIG. FIG. 1 is a diagram showing an outline of an audio output method. Such an audio output method is executed by the in-vehicle device 1 shown in FIG.

As shown in FIG. 1, the vehicle-mounted device 1 is mounted on the vehicle C and is connected to the speakers Sfr, Sfl, Srr, Srl (see the figure below) and the microphone M. The speakers Sfr to Srl are speakers whose directivity can be changed, such as a parametric speaker. In the following, when it is not necessary to distinguish the speakers Sfr to Srl, they are referred to as the speaker S.

Further, the microphone M collects the uttered voice by the occupant of the vehicle C and outputs it to the in-vehicle device 1. That is, the occupant can perform a voice operation for operating, for example, a navigation device or the like via the microphone M.

Here, in the prior art, when the voice input is accepted, the influence of the voice input by the output voice output from the speaker is reduced by internally canceling the voice signal output from the speaker.

However, if the voice signal is canceled, the spoken voice acquired through the microphone is deteriorated. Therefore, in the prior art, the accuracy of voice input is lowered.

Further, as a conventional technique, when accepting a voice input, the reproduction of music may be stopped, and a guidance voice based on the voice input or a received voice of a hands-free call may be output instead of the music.

In such a case, the passenger cannot continue to listen to the music. That is, in the prior art, when the voice signal is canceled, the voice signal based on the voice input is deteriorated, and when the reproduction of the music is stopped, the passenger cannot continuously listen to the music. Further, in the prior art, since the content of the call is notified to the entire inside of the vehicle during the hands-free call, it is necessary to take the other occupants into consideration when making the call.

Therefore, in the voice output method according to the embodiment, when the voice input is accepted, the directivity of the speaker S is controlled to suppress the obstruction of the voice input to the microphone M.

That is, in the voice output method according to the embodiment, by controlling the directivity of the speaker S, it is possible to prevent the voice such as music from being input to the microphone M (see the figure below).

Specifically, as shown in the lower figure of FIG. 1, in the voice output method, in a normal time (when voice input is not accepted), the directivity of each speaker S is widened to output voice such as music.

On the other hand, in the voice output method, when the voice input is accepted, the directivity of the speaker S can be switched so that the output voice of the speaker S is not collected by the microphone M. In the example shown in FIG. 1, the case of switching the directivity of the speaker Sfl and the speaker Sfr is illustrated.

As a result, in the voice output method according to the embodiment, it is possible to suppress the influence of the output voice on the voice input. Further, in the voice output method according to the embodiment, it is possible to detect the seating position of the occupant of the vehicle C and optimize the output voice for each occupant according to the detected seating position.

Specifically, in the voice output method according to the embodiment, the seating position of the vehicle C can be detected, and the output voice of the speaker S can be switched for each seating position. That is, for example, at the time of voice input, the guidance voice for the voice input can be output from the speaker Sfr, and music can be continuously output from the other speakers Sfl, Thr, and Srr.

That is, in the voice output method according to the embodiment, it is possible to create an independent acoustic space for each occupant in the limited space of the vehicle C by switching the directivity of the speaker S. .. This enables the occupant to continuously listen to the voice such as music. Therefore, in the voice output method according to the embodiment, it is possible to continuously listen to the output voice while suppressing the influence of the output voice on the voice input.

Next, the configuration of the vehicle-mounted acoustic system 100 including the vehicle-mounted device 1 will be described with reference to FIG. FIG. 2 is a block diagram of the vehicle-mounted acoustic system 100 according to the embodiment.

As shown in FIG. 2, the vehicle-mounted acoustic system 100 includes a vehicle-mounted device 1, a seatbelt sensor Ss, a camera Cm, a microphone M, a terminal device T, a navigation device N, an audio device Ad, and a speaker S.

The seatbelt sensors Ss are, for example, sensors installed for each seat of the vehicle C and detecting the seatbelt wearing state. The detection result of the seatbelt sensor Ss is output to the in-vehicle device 1.

The camera Cm is, for example, an in-vehicle camera provided inside the vehicle C to capture an image of an occupant in the vehicle. The camera Cm may be provided for each seat, or one camera Cm may be provided at a position such as a rear-view mirror overlooking the entire interior of the vehicle. Further, the captured image captured by the camera Cm is output to the in-vehicle device 1.

The terminal device T is a smartphone or tablet terminal owned by the occupant of the vehicle C, and is connected to the in-vehicle device 1 via a wired or wireless network. The microphone M is provided near the steering wheel of the vehicle C, for example, and collects the uttered voice of the occupant of the vehicle C and outputs it to the in-vehicle device 1. The user can perform voice operation on an in-vehicle device such as the navigation device N by using the spoken voice collected by the microphone M.

The vehicle-mounted acoustic system 100 may be configured to include a plurality of microphones M. In such a case, at least one microphone M may be combined with, for example, a microphone included in the terminal device T.

The navigation device N provides route guidance from the current location of the vehicle C to the destination. The navigation device N accepts various operations by voice operation of the occupant by the microphone M input from the vehicle-mounted device 1 and operations for an operation unit (not shown). Further, the navigation device N outputs guidance voices corresponding to the above-mentioned various operations to the in-vehicle device 1.

The audio device Ad is, for example, an acoustic reproduction device having a reproduction function of multimedia such as a CD (Compact Disc) and a DVD. The reproduced sound reproduced by the audio device Ad is output to the in-vehicle device 1.

Further, the audio device Ad receives various operations from the in-vehicle device 1 and is controlled according to the various operations, similarly to the navigation device N described above. The audio device Ad may be the terminal device T. That is, the in-vehicle device 1 can also output the reproduced sound input from the terminal device T instead of the audio device Ad from the speaker S. Further, the vehicle-mounted acoustic system 100 may include a radio and a television in addition to the audio device Ad.

The in-vehicle device 1 includes a control unit 2 and a storage unit 3. The control unit 2 includes a detection unit 21, an authentication unit 22, a reception unit 23, a switching unit 24, and a distribution unit 25. Further, the control unit 2 includes, for example, a computer having a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), an HDD (Hard Disk Drive), an input / output port, and various circuits. ..

The CPU of the computer functions as a detection unit 21, an authentication unit 22, a reception unit 23, a switching unit 24, and a distribution unit 25 of the control unit 2, for example, by reading and executing a program stored in the ROM.

At least one or all of the detection unit 21, the authentication unit 22, the reception unit 23, the switching unit 24, and the distribution unit 25 of the control unit 2 are hardware such as an ASIC (Application Specific Integrated Circuit) or an FPGA (Field Programmable Gate Array). It can also be configured with hardware.

Further, the storage unit 3 corresponds to, for example, a RAM or an HDD. The RAM or HDD can store the seat information 31, the occupant database 32, the switching information 33, and various programs. The in-vehicle device 1 may acquire the above-mentioned program and various information via another computer or a portable recording medium connected by a wired or wireless network.

The detection unit 21 of the control unit 2 detects the seating position of the occupant based on the detection result of the seatbelt sensor Ss. Specifically, the detection unit 21 determines, for example, that the occupant is seated in the seat on which the seatbelt is fastened, and determines that the occupant is not seated in the seat without the seatbelt. Can be done.

The detection unit 21 may detect the seating position based on the captured image captured by the camera Cm instead of the detection result of the seatbelt sensor Ss. In such a case, the detection unit 21 can detect the seating position from the captured image based on the relative positional relationship of the occupants.

The authentication unit 22 authenticates the occupant whose seating position has been detected by the detection unit 21. Specifically, the authentication unit 22 can authenticate each occupant by applying the existing face recognition technology to the captured image input from the camera Cm. It is assumed that the information regarding the faces and the like of each occupant is registered in advance in the occupant database 32 of the storage unit 3.

When the occupant is authenticated, the authentication unit 22 updates the seat information 31 of the storage unit 3. Here, a specific example of the seat information 31 will be described with reference to FIG. FIG. 3 is a diagram showing a specific example of the seat information 31.

As shown in FIG. 3, the seat information 31 is information in which an occupant authenticated by the authentication unit 22 is associated with each seat. In the example shown in FIG. 3, Mr. A in the driver's seat, Mr. B in the passenger seat, and Mr. C behind the passenger seat are each certified by the certification unit 22.

Further, FIG. 3 shows a case where the seat behind the driver's seat is vacant. In such a case, for example, in the vehicle-mounted acoustic system 100, the speaker S corresponding to the vacant seat (speaker Srr in the example shown in the figure) is turned off.

That is, by turning off the speaker S in the vacant seat, the power consumption can be suppressed by the amount of the speaker S. In the in-vehicle sound system 100, it is possible to turn on all the speakers S regardless of whether or not there are vacant seats.

Returning to the explanation of FIG. 2, the reception unit 23 will be described. The reception unit 23 receives voice input by the occupant. Specifically, the reception unit 23 receives the utterance voice input via the microphone M. The reception unit 23 can switch on / off the microphone M by, for example, operating a button (not shown) provided on the handle. However, the present invention is not limited to this, and the reception unit 23 may keep the microphone M always on, and for example, when a predetermined keyword is detected, the reception unit 23 may recognize the subsequent utterance voice as voice input.

Then, when the reception unit 23 receives the voice input, the reception unit 23 converts the voice input into an operation command and outputs the voice input to the switching unit 24. For example, such an operation command includes a device to be operated (in the example shown in the figure, a navigation device N or an audio device Ad) and a command for controlling the device.

Further, the reception unit 23 can also receive the uttered voice of the hands-free call as the voice input via the microphone M. In such a case, the reception unit 23 outputs the uttered voice to the switching unit 24. That is, in the present embodiment, the voice input includes a voice operation for operating various in-vehicle devices and a spoken voice in a hands-free call.

Further, the reception unit 23 can also identify the speaker of the voice input. For example, the reception unit 23 can identify the speaker by voiceprint authentication or image authentication.

For example, the reception unit 23 can refer to the occupant database 32 and identify an occupant having similar characteristics to the voice input from the microphone M as the speaker. Further, the reception unit 23 can analyze the movement of each occupant's mouth from the temporally continuous captured images captured by the camera Cm, and can identify the speaker. When the reception unit 23 identifies the speaker, the reception unit 23 outputs information about the speaker to the switching unit 24.

When the voice input is received by the reception unit 23, the switching unit 24 switches the directivity of the speaker S according to the seating position detected by the detection unit 21.

Further, the switching unit 24 switches the output voice of the speaker S to the speaker specified by the reception unit 23. Here, a specific example of such a point will be described with reference to FIG. FIG. 4 is a diagram showing a specific example of switching the output voice.

As shown in FIG. 4, the switching unit 24 switches the output sound of each speaker S by controlling the switches SW1 to SW4, for example. The switches SW1 to SW4 are switches for switching the connection between the audio device Ad or the navigation device N and the speakers S.

In the example shown in FIG. 4, only the switch SW1 is connected to the navigation device N, and the other switches SW2 to SW4 are connected to the audio device Ad.

In such a case, the guidance voice output from the navigation device N is output from the speaker Sfl connected to the navigation device N by the switch SW1. Further, the speakers Sfr, Thr, and Srr connected to the audio device Ad by the switches SW2 to SW4 output audio such as music output by the audio device Ad.

That is, by switching the switches SW1 to SW4, the switching unit 24 can output the guidance voice by the navigation device N only from the speaker S of the speaker and continuously output the music from the other speakers S. be.

Although the audio device Ad and the navigation device N have been described here as examples, the music playback function of the terminal device T, the radio, and the television may be used instead of the audio device Ad. Further, instead of the navigation device N, for example, a hands-free call of the terminal device T may be used.

Returning to FIG. 2, the description of the switching unit 24 will be continued. As described above, the switching unit 24 switches the directivity of the speaker S when the voice input is received by the reception unit 23.

For example, the switching unit 24 switches the directivity of each speaker S based on the switching information 33 of the storage unit 3. Here, a specific example of the switching information 33 will be described with reference to FIG. FIG. 5 is a diagram showing a specific example of the switching information 33.

As shown in FIG. 5, the switching information 33 is information in which "situation", "condition", and "speaker directivity" are associated with each other. The situation indicates the situation in the vehicle C when the reception unit 23 accepts the voice input. For example, the situation has a function and the presence or absence of a passenger.

The condition is information indicating the output sound output from each speaker S for each situation. Further, the speaker directivity indicates the directivity of each speaker S with respect to the output sound.

As shown in FIG. 5, for example, when the function is a hands-free call and there is a passenger, the speaker so that the received voice of the hands-free call is output only to the driver from the driver's speaker S. The directivity of S is controlled.

Further, in such a case, the directivity of the speaker S is controlled so that the music output from the audio device Ad is output only to the passenger from the speaker S of the passenger.

In this case, since the content of the hands-free call is not notified to the passengers, the privacy of each occupant can be protected. In the in-vehicle sound system 100, it is possible to select the speaker S that outputs the received voice according to the relationship between the occupants, but this point will be described later with reference to FIG.

Further, as shown in FIG. 5, for example, when there is a passenger at the time of voice recognition, a guidance voice is output from the driver's speaker S instead of the above-mentioned received voice. Further, when the speaker of the voice recognition is a passenger, the guidance voice is output from the passenger's speaker S, and the music is continuously output from the driver's speaker.

As described above, the switching unit 24 controls the directivity of each speaker S so as to avoid the microphone M when receiving the voice input. This makes it possible to suppress the influence of the output voice of the speaker S on the voice input at the time of voice input.

Further, the switching unit 24 can switch the directivity of each speaker S toward a relatively narrow range including the ears of each occupant when receiving the voice input. As a result, the output sound output from each speaker S can be heard only by the occupant to be listened to. In such a case, for example, it is possible to analyze the position of each occupant's ear from the captured image captured by the camera Cm.

Next, a specific example of the speaker selection process for outputting the received voice during a hands-free call will be described with reference to FIG. The switching unit 24 selects the speaker S that outputs the received voice based on the relationship between the occupants. The relationship refers to, for example, relatives, friends, lovers, colleagues at work, and the like. For example, the information regarding such a relationship is stored in the occupant database 32 of the storage unit 3 shown in FIG.

Further, the switching unit 24 selects, for example, the speaker S that outputs the received voice based on the relationship between the call partner of the power transmission / reception destination of the terminal device T and the occupant. Here, it is assumed that Mr. D, Mr. A, and Mr. B, who are the call partners, are colleagues at work and Mr. C is not a colleague at work, as shown in FIG.

In such a case, the switching unit 24 selects the speaker Sfr of Mr. A and the speaker Sfl of Mr. B as the output destination of the received voice of the terminal device T. Further, in such a case, the switching unit 24 continuously outputs the music of the audio device Ad to the speaker Srl of Mr. C.

That is, the switching unit 24 selects an occupant who is likely to be related to the other party, and outputs the received voice from the speaker S of the occupant. Therefore, the received voice can be output to the selected occupant, and the music can be continuously output to the other occupants.

In this way, the switching unit 24 allows a plurality of occupants to easily participate in the call by selecting the occupants who participate in the hands-free call.

In this case, the utterances of Mr. A and Mr. B may be heard by Mr. C. Therefore, the volume of the speaker Srl of Mr. C may be increased, or the speaker Srr of the vacant seat may be turned from off to on so that the output sound of the audio device Ad may be output from the speaker Srr toward Mr. C.

Further, although the case where the switching unit 24 selects the speaker S based on the relationship between the occupant and the other party has been described here, the speaker S may be selected based on the relationship only with the occupant.

Specifically, for example, when the vehicle C has a relationship between other occupants such as a taxi, the switching unit 24 can select the speaker S so as not to let the other occupants hear the call to the driver. be. This allows the driver to enjoy the call without hesitation to other occupants.

Returning to the description of FIG. 2, the distribution unit 25 will be described. When the output voice for the speaker is switched to the switching unit 24, the distribution unit 25 distributes the voice component of the output voice to the output voice for other occupants.

Specifically, here, a specific example of the processing by the distribution unit 25 will be described with reference to FIG. 7. FIG. 7 is a diagram showing a specific example of processing by the distribution unit 25.

As shown in FIG. 7, the distribution unit 25 receives an audio signal input from the audio device Ad when the music played by the audio device Ad is 2.0 ch or more in the normal state (other than when the audio input is accepted). Is distributed to each speaker S. Here, for the sake of simplicity, the description of the subwoofer and the like is omitted.

Specifically, the distribution unit 25 distributes the audio signal Mfl to the speaker Sfl, and distributes and outputs the audio signal Mfr to the speaker Sfr. Similarly, the distribution unit 25 distributes the audio signal Mr to the speaker Srl, and distributes and outputs the audio signal Mr to the speaker Srr.

The distribution unit 25 can provide surround sound in the vehicle by distributing and outputting the audio signal to each speaker S. However, as described above, in the vehicle-mounted acoustic system 100 according to the embodiment, when the voice input is received, the output source of the speaker S of the speaker is switched.

If the output source of the speaker S is simply switched, the balance of the surround sound may be lost, which may give a sense of discomfort to the occupants other than the speaker.

Therefore, when the output source of the speaker S is switched by the switching unit 24, the distribution unit 25 performs a so-called downmix process of distributing the audio signal distributed to the speaker S to the other speakers S.

Specifically, as shown in the lower figure of the figure, when the output source of the speaker Sfl is switched at the time of receiving the audio input, the distribution unit 25 distributes the audio signal Mfl to the speaker Sfl to another speaker. Distribute to Sfr, Sfl, Srr.

As a result, it is possible to suppress the change in the surround sound for the occupants other than the speaker, so that it is possible to reduce the discomfort due to the change in the surround sound. That is, it is possible to make the occupants other than the speaker listen to the music with the deterioration of the sound quality suppressed. The distribution unit 25 can distribute the audio signal by using an existing technique such as using a so-called downmix coefficient.

Next, a processing procedure executed by the vehicle-mounted device 1 according to the embodiment will be described with reference to FIG. FIG. 8 is a flowchart showing a processing procedure executed by the in-vehicle device 1. The processing procedure shown below is repeatedly executed by the control unit 2 of the in-vehicle device 1.

As shown in FIG. 8, first, the control unit 2 detects the seating position of the vehicle C (step S101) and determines whether or not there is a vacant seat (step S102). Here, when there are vacant seats (step S102, Yes), the control unit 2 turns off the vacant seat speaker S (step S103). In other words, the process of step S103 can be said to turn on only the speaker S of the seated seat.

Further, when there are no vacant seats (step S102, No), the control unit 2 omits the process of step S103 (turns on all the speakers S), and proceeds to the process of step S104.

Next, the control unit 2 determines whether or not the voice input has been accepted (step S104). If the control unit 2 does not accept the voice input (steps S104, No), the control unit 2 continues the process of step S104 until the voice input is received.

On the other hand, when the control unit 2 receives the voice input (step S104, Yes), the control unit 2 identifies the speaker of the voice input (step S105). Subsequently, the control unit 2 determines whether or not the voice input is a hands-free call (step S106).

When the voice input is a hands-free call (step S106, Yes), the control unit 2 selects the speaker S that outputs the received voice based on the human relationship between the occupant and the other party (step S107). On the other hand, when the voice input is not a hands-free call (steps S106, No), the control unit 2 omits the process of step S107.

Subsequently, the control unit 2 switches the directivity of the speaker S (step S108), switches the audio output of the speaker S, respectively (step S109), and ends the process. The process of step S109 includes performing the above-mentioned downmix process of the speaker S as necessary.

As described above, the vehicle-mounted device 1 according to the embodiment includes a detection unit 21, a reception unit 23, and a switching unit 24. The detection unit 21 detects the seating position of the occupant in the vehicle. The reception unit 23 receives voice input by the occupant. When the voice input is received by the reception unit 23, the switching unit 24 switches the directivity of the speaker S according to the seating position detected by the detection unit 21. Therefore, according to the in-vehicle device 1 according to the embodiment, it is possible to continuously listen to the output voice while suppressing the influence of the output voice of the speaker S on the voice input.

By the way, in the above-described embodiment, the case where the vehicle-mounted acoustic system 100 includes the four speakers S has been described, but the present invention is not limited to this. That is, the vehicle-mounted acoustic system 100 may include five or more speakers S.

Therefore, the process by the switching unit 24 in the case where the number of speakers S is seven will be described with reference to FIG. FIG. 9 is a diagram showing a modified example of processing by the switching unit 24. Here, as shown in FIG. 9, in addition to the speakers Sfl, Sfr, Thr, and Srr described above, speakers Sf1 to Sf3 that output sound toward the inside of the vehicle are provided in front of the vehicle C (for example, a dashboard or the like). Will be explained. As the speakers Sf1 to Sf3, a speaker having a variable directivity can be used as in the speaker S described above.

Here, as shown in FIG. 9, for example, the guidance voice of the navigation device N is output to Mr. A, and the music output from the audio device Ad is output to the other occupants (Mr. B and Mr. C). The case of doing so will be described.

At this time, as shown in FIG. 9, the speaker Sfr on the right side of Mr. A and the speaker Sfl on the left side of Mr. B are turned off, and the guidance voice is output to Mr. A using the speaker Sf3. Further, for Mr. B, music is output using the speaker Sf1 and the speaker Sf2.

Here, in addition to Mr. A, Mr. B exists in the emission direction of the speaker Sfr. Therefore, even if the directivity of the speaker Sfr is switched, there is a possibility that Mr. B will hear it.

On the other hand, only Mr. A or Mr. B exists in the emission directions of the speakers Sf1 to Sf3 (excluding Mr. C here). That is, by turning off the speaker Sfr and the speaker Sfl, it is possible to secure independent acoustic spaces.

Further, in the above example, the number of speakers S that output guidance voice is smaller than the number of speakers S that output music. That is, by increasing the number of speakers S for playing music, it is possible to secure surround sound.

In such a case, the directivity of the speaker Sfr of Mr. A may be directed toward the ceiling or the like and reflected on the ceiling so that the music of the audio device Ad may be directed toward Mr. B for listening.

Further effects and variations can be easily derived by those skilled in the art. For this reason, the broader aspects of the invention are not limited to the particular details and representative embodiments described and described above. Thus, various modifications can be made without departing from the spirit or scope of the overall concept of the invention as defined by the appended claims and their equivalents.

1 In-vehicle device 21 Detection unit 22 Authentication unit 23 Reception unit 24 Switching unit 25 Distribution unit 100 In-vehicle sound system S Speaker M Microphone

Claims (8)

A detector that detects the seating position of the occupant in the car,
The reception section that accepts voice input by the occupants,
A switching unit that switches the directivity of the speaker according to the seating position detected by the detection unit when the voice input is received by the reception unit.
With the authentication unit that authenticates the occupant whose seating position is detected by the detection unit
It is an in -vehicle device equipped with
The switching unit is
When the voice input is a hands-free call, a speaker that outputs the call voice of the hands-free call is selected according to the relationship between the occupant and the other party or the occupants based on the authentication result of the authentication unit.
An in-vehicle device characterized by this. The relationship is at least one of a relative, friend, lover, or colleague at work.
The in-vehicle device according to claim 1. The switching unit is
During the hands-free call, a occupant who is likely to be related to the other party is selected, and the call voice is output from the speaker for the occupant.
The in-vehicle device according to claim 1 or 2. The switching unit is
Increase the volume of the speaker for occupants who are unlikely to be related to the other party.
The in-vehicle device according to claim 3. The switching unit is
Turn the vacant speaker from off to on and output audio to the occupants who are unlikely to be related to the other party.
The vehicle-mounted device according to claim 3 or 4. At the reception desk, which accepts voice input by the occupants via a microphone during a hands-free call,
The certification unit that certifies the occupants and
With multiple speakers
A switching unit that selects a speaker for outputting the call voice of the hands-free call from the plurality of speakers according to the relationship between the occupant and the other party or the occupant based on the authentication result of the authentication unit.
An in-vehicle device characterized by being equipped with. It includes a switching step of switching the directivity of the speaker according to the seating position of the occupant when the voice input by the occupant in the vehicle is received.
The switching step is
When the voice input is a hands-free call, the call voice of the hands-free call is produced according to the relationship between the occupant and the other party or the occupants based on the authentication result for the occupant whose seating position is detected. Select the speaker to output
An audio output method characterized by that. Speakers that authenticate occupants and output the call voice of the hands-free call from a plurality of speakers according to the relationship between the occupant and the other party or the occupants based on the result of the authentication during a hands-free call. select
An audio output method characterized by that.

Images