JP2021068119A - Vehicle recording device, vehicle recording method, and vehicle recording program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle recording device, a vehicle recording method and a vehicle recording program capable of flexibly grasping a necessary sound signal. A control device 100 of a drive recorder 10 has an audio signal acquisition unit 101 that acquires an audio signal of an audio sound being reproduced in the own vehicle, and a microphone that acquires a microphone signal collected by a microphone installed in the own vehicle. It includes a signal acquisition unit 102 and a recording control unit 104 that records the acquired audio signal and microphone signal on different channels. [Selection diagram] Fig. 3

Description

The present invention relates to a vehicle recording device, a vehicle recording method, and a vehicle recording program.

In recent years, in order to store the situation at the time of a vehicle accident, a vehicle recording device that records video and audio inside and outside the vehicle has become widespread. As a related technique, for example, Patent Document 1 is known. In Patent Document 1, in the driving situation data recording device, the music portion is removed from the sound data collected in the vehicle based on the music data being played in the vehicle, and the sound data after the music removal is recorded in the recording medium. Is described.

Japanese Unexamined Patent Publication No. 2017-134646

In a vehicle recording device that records voice, it is desirable to clearly confirm the voice of the driver or the like even when music is being played by car audio. For example, in the technique described in Patent Document 1, music is included in the recorded sound signal by removing the music portion from the sound signal collected in the vehicle and recording the sound signal after removing the music on a recording medium. I'm preventing that. However, the technique described in Patent Document 1 has a problem that it is not possible to flexibly grasp the necessary voice at the time of reproduction such as accident response because only the sound signal after removing the music is recorded.

The present invention includes an audio signal acquisition unit that acquires an audio signal being reproduced in the own vehicle, a microphone signal acquisition unit that acquires a microphone signal collected by a microphone installed in the own vehicle, the acquired audio signal, and the acquired audio signal. Provided is a vehicle recording device including a recording unit that records microphone signals on different channels.

The present invention acquires an audio signal being reproduced in the own vehicle, acquires a microphone signal collected by a microphone installed in the own vehicle, and records the acquired audio signal and the microphone signal in different channels. A vehicle recording method is provided.

The present invention acquires an audio signal being reproduced in the own vehicle, acquires a microphone signal collected by a microphone installed in the own vehicle, and records the acquired audio signal and the microphone signal in different channels. A vehicle recording program for causing a computer to perform processing is provided.

According to the present invention, it is possible to provide a vehicle recording device, a vehicle recording method, and a vehicle recording program capable of flexibly grasping a necessary sound signal.

It is a figure which shows the vehicle-mounted image of the vehicle recording system which concerns on Embodiment 1. FIG. It is a block diagram which shows the structural example of the vehicle recording system which concerns on Embodiment 1. FIG. It is a block diagram which shows the structural example of the control device in the vehicle recording device which concerns on Embodiment 1. FIG. It is a flowchart which shows the operation example of the vehicle recording apparatus which concerns on Embodiment 1. FIG. It is a block diagram which shows the structural example of the control device in the vehicle recording device which concerns on Embodiment 2. It is a flowchart which shows the operation example of the vehicle recording apparatus which concerns on Embodiment 2.

Hereinafter, embodiments will be described with reference to the drawings. In each drawing, the same elements are designated by the same reference numerals, and duplicate explanations are omitted as necessary.

(Embodiment 1)
First, the first embodiment will be described. FIG. 1 shows an in-vehicle image of the vehicle recording system according to the present embodiment, and FIG. 2 shows a configuration example of the vehicle recording system according to the present embodiment.

As shown in FIG. 1, the vehicle recording system 1 according to the present embodiment is an in-vehicle system including a drive recorder 10 and a car audio 20 connected so that signals can be input and output. The car audio 20 is an audio audio output device that outputs audio audio such as music from an in-vehicle speaker 30 arranged inside a vehicle door or the like. The car audio 20 is mounted, for example, in the audio mounting space in the center of the dashboard. It should be noted that the device may be not limited to car audio, but may be a car navigation device or the like, as long as it is a device capable of outputting audio sound.

The drive recorder 10 is a vehicle recording device that records video and audio around and inside the vehicle on which it is mounted. The drive recorder 10 is fixed at a position close to the driver of the front window, for example. The drive recorder 10 uses, for example, a built-in microphone to record vehicle sounds including audio sounds output from the vehicle-mounted speaker 30 and sounds emitted by the driver. The vehicle sound includes not only the sound inside the vehicle but also the sound generated from the vehicle such as the sound outside the vehicle, the engine sound, and the warning sound.

As shown in FIG. 2, the car audio 20 includes a media playback device 21, a power amplifier 22, and interfaces (I / F) 23 and 24. The interface 23 is a connector for connecting the connection cable 31 to and from the drive recorder 10. The interface 24 is a connector for connecting the speaker cable 32 to and from the vehicle-mounted speaker 30.

The media playback device 21 plays music or the like of media such as a CD (Compact Disc) (registered trademark) or DVD (registered trademark), and outputs an audio signal such as the music to be played back. As long as the audio signal can be output, not only the playback of media including audio and video, but also the playback of audio files recorded in memory, hard disk, etc., and audio received from the outside such as radio and television may be played. May be output.

The audio signal output from the media playback device 21 is output to the drive recorder 10 via the interface 23 and the connection cable 31, and after being amplified by the power amplifier 22, a plurality of audio signals are amplified via the interface 24 and the speaker cable 32. It is output as audio sound from the vehicle-mounted speaker 30. For example, the vehicle-mounted speakers 30-1 to 30-4 are arranged inside the left and right front doors in front of the vehicle and inside the left and right rear doors behind the vehicle, respectively.

The drive recorder 10 includes an interface 11, a microphone 12, a microphone amplifier 13, a voice processing device 14, an imaging unit 15, a control device 100, a recording device 16, and a speaker 17. Since the drive recorder 10 detects an event that starts recording video or audio, it may be provided with various sensors as needed, or may acquire detection signals from various sensors of its own vehicle. Further, the drive recorder 10 may be provided with a display device or the like for displaying an image.

The interface 11 is a connector for connecting the connection cable 31 to and from the car audio 20. The microphone 12 is a voice collecting device that collects surrounding voices from the installation position of the vehicle and outputs the collected microphone signals. For example, the microphone 12 is a built-in microphone built in the drive recorder 10. In this example, the drive recorder 10 is fixed at a position close to the driver, and the microphone 12 emits vehicle sounds in the vehicle including in-vehicle speakers 30-1 to 30-4 and voices emitted from the driver from that position. collect. The microphone 12 is not limited to the built-in microphone, and may be installed at any position such as a rear-view mirror, as long as the vehicle-mounted speakers 30-1 to 30-4 and the driver's voice can be collected. The microphone 12 may be unidirectional or omnidirectional, but is preferably unidirectional mainly for collecting the driver's voice. The microphone signal output from the microphone 12 is amplified by the microphone amplifier 13 and output to the voice processing device 14.

The voice processing device 14 converts the input voice signal into a signal that can be processed by the subsequent control device 100. The voice processing device 14 converts the audio signal input from the car audio 20 via the interface 11 into a desired signal, and converts the microphone signal input from the microphone 12 via the microphone amplifier 13 into a desired signal. Convert.

The image pickup unit 15 is a camera that takes an image of the periphery of the own vehicle and the inside of the vehicle and generates the captured image signal. The image pickup unit 15 includes a lens group 15a and an image pickup element 15b. The image pickup device 15b is a CCD (Charged-coupled devices), a CMOS (Complementary metal-oxide-semiconductor), or the like. The image pickup unit 15 is, for example, a built-in camera built in the drive recorder 10. The imaging unit 15 is not limited to the built-in camera, and may be installed at an arbitrary position of the own vehicle, as long as the periphery of the own vehicle and the inside of the vehicle can be imaged.

The recording device 16 is a recording device that records video and audio, and is a non-volatile memory such as a flash memory, a hard disk, or the like. The recording device 16 can record a plurality of signals in multi-channel (multi-track), and has a recording area for recording signals in each channel. The channel includes a channel for video recording and a channel for audio recording, and has a capacity according to each application. For example, the recording device 16 is a memory card such as an SD card or a CF (Compact Flash (registered trademark)) card inserted in a card slot provided in the drive recorder 10. The recorded memory card signal may be reproduced using a reproduction device such as another computer device. If the video or audio can be recorded, another external storage device may be used. For example, it may be recorded in a car audio 20 mounted on the own vehicle or a storage unit of a car navigation system, or may be recorded in a smartphone or a server device on the Internet.

The speaker 17 is an audio output device that outputs the audio recorded in the recording device 16. The speaker 17 is, for example, a built-in speaker built in the drive recorder 10. As long as the sound can be output, the speaker 17 is not limited to the built-in speaker and may be installed at an arbitrary position of the own vehicle. Further, as the speaker 17, another output device such as an in-vehicle speaker 30, a wireless speaker, or earphones may be used.

The control device 100 is a control unit that controls the operation of each unit of the drive recorder 10, and is, for example, a processor such as a CPU (Central Processing Unit). The control device 100 controls the recording of video and audio, and also controls the reproduction of the recorded video and audio. For example, the function of the control device 100 is realized by executing the program stored in the memory by a processor such as a CPU. FIG. 3 shows an example of the functional configuration of the control device 100. As shown in FIG. 3, the control device 100 includes an audio signal acquisition unit 101, a microphone signal acquisition unit 102, a video signal acquisition unit 103, a recording control unit 104, and a reproduction control unit 110.

The audio signal acquisition unit 101 acquires the audio signal being reproduced by the car audio 20 in the own vehicle via the interface 11 and the audio processing device 14. The microphone signal acquisition unit 102 acquires the microphone signal collected by the microphone 12 in the own vehicle via the voice processing device 14. The video signal acquisition unit 103 acquires video signals around and inside the vehicle imaged by the image pickup unit 15.

The recording control unit 104 controls recording of the audio signal acquired by the audio signal acquisition unit 101, the microphone signal acquired by the microphone signal acquisition unit 102, and the video signal acquired by the video signal acquisition unit 103 in the recording device 16. The recording control unit 104 records the audio signal, the microphone signal, and the video signal in different channels. The recording control unit 104 records the audio signal in the audio channel for the audio signal, records the microphone signal in the microphone channel for the microphone signal, and records the video signal in the video channel for the video signal. The channel for recording each signal may be one channel according to the signal, or may be an arbitrary number of channels. For example, when the audio signal or the microphone signal is a stereo two-channel signal, the audio channel or the microphone channel is set to two channels. Further, the recording control unit 104 records the audio signal, the microphone signal, and the video signal in association with each other so that the time can be synchronized at the time of reproduction. In addition to the audio signal, a cancel signal that cancels the audio signal may be recorded.

The reproduction control unit 110 controls the reproduction of each signal recorded in the recording device 16 according to the operation of the user or the like. In particular, the reproduction control unit 110 selectively synthesizes and reproduces the recorded audio signal, microphone signal, video signal, and audio signal as a cancel signal. That is, the reproduction control unit 110 synthesizes and reproduces an arbitrary signal selected according to the operation of the user. Since the signal of the recording device 16 may be reproduced by another reproduction device, the configuration of the reproduction control unit 110 is not limited to the drive recorder 10 and may be provided in another reproduction device.

The reproduction control unit 110 includes an input unit 111, a cancel signal generation unit 112, and a synthesis unit 113. The input unit 111 is a user interface for inputting a user's operation, and is a touch panel, buttons, or the like. The input unit 111 accepts user input such as settings necessary for performing playback control. The cancel signal generation unit 112 generates a cancel signal for canceling (silence) a predetermined sound. The cancel signal is a signal having a phase opposite to that of a predetermined sound. For example, the cancel signal generation unit 112 generates a cancel signal for canceling the audio signal. The synthesis unit 113 synthesizes a plurality of sound signals, and outputs the combined sound signal from the speaker 17. For example, the synthesizing unit 113 synthesizes and outputs the cancel signal for canceling the audio signal and the microphone signal.

FIG. 4 shows an operation example of the vehicle recording system 1 according to the present embodiment. Although the operation of recording and reproducing audio is described here, video can be recorded and reproduced at the same time in addition to audio.

First, the car audio 20 outputs audio sound (S101). That is, the media playback device 21 of the car audio 20 reproduces the media in response to the driver's operation or the like, outputs an audio signal such as the played music as audio sound from the vehicle-mounted speaker 30, and outputs the audio signal to the drive recorder 10. Output to.

Subsequently, the drive recorder 10 acquires an audio signal and a microphone signal (S102) as a recording process, and records the acquired audio signal and the microphone signal (S103). When, for example, the drive recorder 10 detects a predetermined impact or the like by the acceleration sensor, it determines that an event for recording has occurred and starts the recording process. The signal to be recorded may be stored in the memory in advance, and the recording process may be performed retroactively for a predetermined time when an event occurs.

Specifically, in the control device 100, the audio signal acquisition unit 101 acquires the audio signal output from the car audio 20, and the microphone signal acquisition unit 102 is from the vehicle-mounted speaker 30 collected by the microphone 12. Acquires the microphone signal of vehicle sound including audio sound and human voice from the driver. Further, the recording control unit 104 records the audio signal acquired by the audio signal acquisition unit 101 and the microphone signal acquired by the microphone signal acquisition unit 102 in the recording device 16. At this time, the audio signal and the microphone signal are recorded on different channels. For example, the audio signal is recorded on the audio channel and the microphone signal is recorded on the microphone channel.

Subsequently, the drive recorder 10 generates a cancel signal of the audio signal as a reproduction process (S104), and synthesizes and outputs the generated cancel signal and the microphone signal (S105). After the recording process, the drive recorder 10 starts the reproduction process according to the user's operation, for example, when confirming the sound or video at the time of a vehicle accident. The user who confirms the voice may be a driver or another person.

Specifically, the reproduction control unit 110 of the control device 100 generates and synthesizes a cancel signal according to the user's operation input to the input unit 111. This makes it possible to flexibly output the sound that the user wants to check. For example, it is possible to select whether to output the recorded vehicle sound as it is or to output the vehicle sound with the audio sound canceled. When the user selects the output of the vehicle sound in which the audio sound is canceled, the cancel signal generation unit 112 reads the audio signal recorded in the audio channel of the recording device 16 and cancels the signal in the opposite phase to the read audio signal. To generate. Further, the synthesis unit 113 reads out the microphone signal recorded in the microphone channel of the recording device 16 and synthesizes the read microphone signal and the cancel signal of the generated audio signal. As a result, the audio sound included in the microphone signal can be canceled. The synthesizing unit 113 outputs the synthesized signal to the speaker 17, and outputs the vehicle sound obtained by removing the audio sound from the speaker 17.

As described above, in the present embodiment, in the in-vehicle system having the car audio and the drive recorder, it is possible to cancel the voice of the car audio and extract other sounds, particularly the conversation of the passenger.

For example, in a related drive recorder, only the voice signal picked up by the microphone installed in the main body was recorded, so it was difficult to clearly extract the voice of the driver or passenger due to the influence of car audio music. .. This was especially noticeable when the noise outside the vehicle was intense and the audio volume was raised on highways. In addition, when the configuration was such that only the passenger's voice was recorded after synthesizing the audio voice cancellation signal with the microphone voice when recording the video, it was not possible to confirm what kind of sound the car audio actually produced. ..

On the other hand, in the present embodiment, since the audio voice can be canceled during playback, the conversation between the driver and the passenger can be played back without being overwhelmed by the music of the car audio, and when a trouble such as an accident occurs. It becomes easier to grasp the situation of. Since it is possible to clarify other than audio voice, in some cases, it is possible to grasp the guidance sound of a pedestrian crossing, the siren of an emergency vehicle, and the like. In addition, since it is possible to select playback by extracting only the voice of the passenger at the time of playback or playback of all the voice in the vehicle, it is possible to grasp the situation in more detail.

Specifically, in the present embodiment, in an in-vehicle system having a car audio and a drive recorder, the audio signal reproduced by the car audio is output to the drive recorder, and the drive recorder outputs the audio signal and the microphone signal collected by the microphone. Simultaneous recording is performed by the multi-channel recording method, and each is recorded on a different channel. By recording the audio signal and the microphone signal on different channels, it is possible to flexibly select the sound to be output during playback. That is, at the time of reproduction, all the in-vehicle sounds acquired from the microphone are reproduced by selecting the output channel, or the microphone signal and the cancel signal are combined to cancel the audio signal and the passenger's voice or the vehicle warning sound. You can freely select and reproduce after the fact whether to extract and reproduce it clearly.

(Embodiment 2)
Next, the second embodiment will be described. This embodiment is an example of recording and reproducing microphone signals collected from a plurality of microphones in the drive recorder according to the first embodiment. Since the other parts are the same as those in the first embodiment, the parts different from the first embodiment will be mainly described.

FIG. 5 shows a configuration example of the control device 100 in the drive recorder 10 according to the present embodiment. As shown in FIG. 5, the control device 100 includes an audio signal acquisition unit 101, a microphone signal acquisition unit 102, a video signal acquisition unit 103, a recording control unit 104, and a reproduction control unit 110, as in the first embodiment. There is.

The microphone signal acquisition unit 102 acquires the microphone signals collected by the plurality of microphones 12 via the voice processing device 14. Similar to the first embodiment, the plurality of microphones 12 are built in the drive recorder 10 and are arranged near the microphone that mainly collects the driver's voice and the output unit of the vehicle warning sound and mainly collects the warning sound. Includes microphones to be used, microphones that are arranged near the output unit of the operation sound of vehicle electrical components and mainly collect the operation sound. The warning sound is, for example, a warning sound of a corner sensor, a front sensor, a back sensor, or the like. The operation sound is, for example, an operation sound of a car audio system, a car navigation system, an operation panel, or the like. The microphone 12 may be installed at an arbitrary position such as a side mirror outside the vehicle to collect the sound outside the vehicle. The recording control unit 104 records a plurality of microphone signals acquired by the microphone signal acquisition unit 102 on different channels.

The reproduction control unit 110 generates and synthesizes a cancel signal in response to a plurality of microphone signals recorded on a plurality of channels. The reproduction control unit 110 includes an input unit 111, a cancel signal generation unit 112, a synthesis unit 113, and further includes an adjustment unit 114, as in the first embodiment. The adjusting unit 114 is a level adjusting unit that adjusts the signal level of each signal to be combined. By adjusting the signal level of each signal, the synthesis ratio of the composite signal can be controlled. For example, you can increase the volume of the channel of the sound you want to hear clearly. The adjusting unit 114 is not limited to the signal level, and may be a timing adjusting unit that adjusts the temporal reproduction timing of each signal. For example, by adjusting the reproduction timing of each signal, the timing of sounds output from a plurality of speakers can be controlled. The adjusting unit 114 may make other adjustments such as a filter level that can be used with an audio signal. Unnecessary noise can be removed by adjusting the filter level.

FIG. 6 shows an operation example of the vehicle recording system 1 according to the present embodiment. As shown in FIG. 6, similarly to the first embodiment, the car audio 20 outputs audio sound (S201), and the drive recorder 10 performs recording processing and reproduction processing.

In the recording process, the drive recorder 10 acquires an audio signal and a plurality of microphone signals (S202), and records the acquired audio signal and the plurality of microphone signals (S203).

Specifically, the audio signal acquisition unit 101 acquires the audio signal, and the microphone signal acquisition unit 102 acquires the microphone signals of the sounds of a plurality of locations of the vehicle collected by the plurality of microphones 12. For example, from the built-in microphone of the drive recorder 10, a microphone signal of voice including audio voice, human voice from the driver, and the like is acquired. From the microphone near the warning sound output unit, the microphone signal of the voice including the audio voice and the warning sound of the corner sensor is acquired. From the microphone near the operation sound output unit, the microphone signal of the voice including the operation sound of the audio voice and the car audio is acquired. Further, the recording control unit 104 records the acquired audio signal and the plurality of microphone signals in different channels. For example, the audio signal is recorded in the audio channel, the microphone signal including the driver's voice is recorded in the driver channel, the microphone signal including the warning sound is recorded in the warning sound channel, and the microphone signal including the operation sound is recorded in the operation sound. Record on the channel.

In the reproduction process, the drive recorder 10 selects the channel to be reproduced (S204), generates a cancel signal (S205), adjusts the level of the signal to be combined (S206), and adjusts the canceled signal and the plurality of microphone signals. Is synthesized and output (S207).

Specifically, in the input unit 111, the user selects a channel of audio to be reproduced and sets an audio level to be synthesized. For example, the user selects a channel to be played back and a channel to be canceled from the recorded audio voice or a plurality of microphone voices, and sets the level of each voice. As a result, the channel to be played back, the channel to be canceled, and the composition ratio can be arbitrarily set. When the user selects the output of the warning sound that canceled the audio sound and sets the level, the cancel signal generation unit 112 reads the audio signal recorded in the audio channel of the recording device 16 and refers to the read audio signal. Generates a cancel signal of opposite phase. The adjusting unit 114 adjusts the level of the cancel signal and adjusts the level of the microphone signal recorded in the warning sound channel of the recording device 16. Further, the synthesis unit 113 synthesizes and outputs the cancel signal whose level has been adjusted and the microphone signal including the warning sound. As a result, a warning sound excluding the audio sound is output from the speaker 17.

As described above, in the present embodiment, in addition to the configuration of the first embodiment, the microphone signals of the voices collected by the plurality of microphones are further acquired and recorded in different channels. As a result, the channel to be reproduced can be arbitrarily selected at the time of reproduction, so that the sound that the user wants to confirm can be reproduced. Further, in addition to the generation of the cancel signal, the sound can be confirmed more clearly by adjusting the signal level, the reproduction timing, and the like of each signal.

The present invention is not limited to the above embodiment, and can be appropriately modified without departing from the spirit. In the above embodiment, an example of outputting an audio signal from the car audio to the drive recorder has been described, but even if a cancel signal for canceling the audio signal is output from the car audio and the output cancel signal is recorded by the drive recorder. Good.

The drive recorder (vehicle recording device) in the above-described embodiment is composed of hardware and / or software, and may be composed of one hardware or software, or may be composed of a plurality of hardware or software. You may. Each function (each process) of the drive recorder may be realized by a computer having a CPU, a memory, or the like. For example, a vehicle recording program for performing the vehicle recording method according to the embodiment may be stored in the storage unit, and each function may be realized by executing the program stored in the storage unit on the CPU.

This program can be stored and supplied to a computer using various types of non-transitory computer readable media. Non-transitory computer-readable media include various types of tangible storage media. Examples of non-temporary computer-readable media include magnetic recording media (eg, flexible disks, magnetic tapes, hard disk drives), magneto-optical recording media (eg, magneto-optical disks), CD-ROMs (Read Only Memory), CD-Rs, It includes a CD-R / W and a semiconductor memory (for example, a mask ROM, a PROM (Programmable ROM), an EPROM (Erasable PROM), a flash ROM, and a RAM (Random Access Memory)). The program may also be supplied to the computer by various types of transient computer readable media. Examples of temporary computer-readable media include electrical, optical, and electromagnetic waves. The temporary computer-readable medium can supply the program to the computer via a wired communication path such as an electric wire and an optical fiber, or a wireless communication path.

1 Vehicle recording system 10 Drive recorder 11 Interface 12 Microphone 13 Microphone amplifier 14 Audio processing device 15 Imaging unit 15a Lens group 15b Imaging element 16 Recording device 17 Speaker 20 Car audio 21 Media playback device 22 Power amplifier 23, 24 Interface 30 In-vehicle Speaker 31 Connection cable 32 Speaker cable 100 Control device 101 Audio signal acquisition unit 102 Microphone signal acquisition unit 103 Video signal acquisition unit 104 Recording control unit 110 Playback control unit 111 Input unit 112 Cancel signal generation unit 113 Synthesis unit 114 Adjustment unit

Claims (8)

An audio signal acquisition unit that acquires the audio signal being played on the own vehicle,
A microphone signal acquisition unit that acquires a microphone signal collected by a microphone installed in the own vehicle, and a microphone signal acquisition unit.
A recording unit that records the acquired audio signal and microphone signal on different channels, and
A vehicle recording device. A playback unit that selectively synthesizes and reproduces the recorded audio signal and microphone signal and the cancel signal that cancels the audio signal is further provided.
The vehicle recording device according to claim 1. The microphone signal acquisition unit acquires a plurality of microphone signals from microphones installed at a plurality of locations of the own vehicle, and obtains a plurality of microphone signals.
The recording unit records the audio signal and the plurality of microphone signals in different channels, respectively.
The reproduction unit selectively synthesizes and reproduces the recorded audio signal, the plurality of microphone signals, and the cancel signal.
The vehicle recording device according to claim 2. A level adjusting unit for adjusting the signal level of the signal to be synthesized is further provided.
The vehicle recording device according to claim 2 or 3. A timing adjusting unit for adjusting the reproduction timing of the signal to be synthesized is further provided.
The vehicle recording device according to any one of claims 2 to 4. A video signal acquisition unit that acquires a video signal that captures an image of the periphery or the inside of the own vehicle is further provided.
The vehicle recording device according to any one of claims 1 to 5, wherein the recording unit records the audio signal, the microphone signal, and the video signal in different channels. Acquires the audio signal being played on your vehicle and
The microphone signal collected by the microphone installed in the own vehicle is acquired, and the microphone signal is acquired.
The acquired audio signal and microphone signal are recorded in different channels.
Recording method for vehicles. Acquires the audio signal being played on your vehicle and
The microphone signal collected by the microphone installed in the own vehicle is acquired, and the microphone signal is acquired.
The acquired audio signal and microphone signal are recorded in different channels.
A vehicle recording program that allows a computer to perform processing.

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