JP2008207768A - On-vehicle acoustic device and method for controlling on-vehicle acoustic device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an on-vehicle acoustic device enabling talking in a state easy to listen to voice of a person, even when an incoming call is received in a mobile phone when music is reproduced by a frequency characteristic set for every music genre, in the on-vehicle acoustic device forming a hands-free. <P>SOLUTION: This on-vehicle acoustic device 10 is provided with a storing part 111 for storing an optimum frequency characteristic for every music genre, an operation part 19 for selecting the music genre, and a control part 11 for reading and setting the frequency characteristic from the storing part 111, and is connected to the mobile phone 20 by radio by a radio transmitting/receiving part 15 to form a hands-free system. When an incoming call detecting part 112 detects the incoming call to the mobile phone 20, the control part 11 reads the frequency characteristic for talking stored in the storing part 111 and sets the characteristic to an equalizer 17, and reads the frequency characteristic based on the music genre when the incoming call is received from the storing part 111 and sets the characteristic to the equalizer 17 when the talking is finished. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an in-vehicle audio device that is mounted on a vehicle and used, and in particular, a frequency band of an audio signal is divided into a plurality of frequency bands, and the frequency characteristics are arbitrarily changed for each frequency band to be used as a speaker. An in-vehicle audio device that can output the sound, and a mobile phone is connected to the audio device wirelessly to realize the hands-free function of the mobile phone, while the music is enjoyed and the mobile phone calls are smoothly adjusted for the function It relates to an acoustic device for use.

  2. Description of the Related Art Conventionally, in the technical field of acoustic devices, acoustic devices that can arbitrarily change the frequency characteristics for each frequency band by dividing the frequency band of the audio signal into a plurality of frequency bands are known.

  In general, such an audio device stores frequency characteristics of frequency bands for each music genre such as jazz, rock, classical, etc. When the genre is set by user designation, the frequency characteristics are read and corrected. An audio signal is converted into an analog signal by a digital / analog conversion circuit, amplified by an amplifier, and then output to a speaker to reproduce music.

  For example, when the user wants to play rock music, the genre “rock” is selected from a plurality of genres. When the genre is set to “Rock”, the frequency characteristics are changed so that the low and high frequencies can be heard strongly. On the other hand, when the genre “jazz” is set, the frequency characteristics are changed so that the middle range is strong and the low and high range sounds weak. In this way, by changing the frequency characteristics for each genre of music, an excellent effect is obtained that the characteristics of the music are sufficiently extracted.

  For example, the following Patent Document 1 (Japanese Patent Application Laid-Open No. 3-240307) discloses an invention of an “acoustic device”. The invention of the acoustic device relates to the invention of an acoustic device capable of changing the frequency characteristics as described above, and further, the condition of the acoustic characteristics such as the inside of the vehicle is severe by providing an input means for arbitrarily changing the frequency characteristics. Even when used in a space, the desired sound quality characteristics of the music source can be obtained.

  On the other hand, in recent years, a so-called hands-free system has been proposed in which a mobile phone can be used in a hands-free manner by using an in-vehicle audio device as the control of the use of the mobile phone while driving is strengthened. An example of such an invention is disclosed in the following Patent Document 2 (Japanese Patent Laid-Open No. 2006-254285) as “an in-vehicle device and an in-vehicle device control method”.

  That is, the in-vehicle device drives the speaker by voice data acquired by a mobile phone instead of driving the speaker by voice output from a source in response to a call instruction from a user, and also acquires voice data acquired by a microphone. Is output to the mobile phone to form a hands-free system.

By using the hands-free system, the user can talk with the other party without taking his hand off the steering wheel during driving, and can safely drive. In addition, since the other party's voice is output from a speaker having a higher output than that of the mobile phone, an excellent effect is obtained in that the other party's voice can be easily heard.
JP-A-3-240307 JP 2006-254285 A

  However, when the hands-free function is realized by combining the above technologies, the following problems occur. In other words, it is assumed that the mobile phone receives an incoming call while reproducing the music by changing the frequency characteristics so that the user designates the music genre and emphasizes the low and high frequencies. If you try to make a call hands-free, the audio signal of the other party will be output from the speaker with the frequency characteristics changed by the equalizer as well as other audio sources, so only the low and high range should be emphasized and human voice should be heard There was a problem that the midrange sounded weakly, making it difficult to hear the other party's voice.

  Therefore, as a result of various studies to solve the above problems, the inventor of the present application has invalidated the frequency characteristics that have been set so far when an incoming call is detected even if the frequency characteristics are changed by setting the music genre. As a result, the present invention has been completed by conceiving that the above-described problems can be solved.

  That is, the present invention has an object to solve the above-described problems, and in an in-vehicle acoustic device that forms a hands-free system by wirelessly connecting a mobile phone, music is reproduced with frequency characteristics set for each music genre. It is an object of the present invention to provide an in-vehicle audio apparatus that enables a user to make a call in a situation in which a human voice can be easily heard even when a mobile phone receives an incoming call.

In order to solve the above-mentioned problem, the invention according to claim 1 of the present application is
A storage unit storing optimum frequency characteristics for each music genre, an operation unit for selecting a music genre, and a control unit for reading and setting the frequency characteristics from the storage unit,
In an in-vehicle audio device that is connected wirelessly to a mobile phone to form a hands-free system,
When the control unit detects an incoming call to the mobile phone, the control unit invalidates a frequency characteristic currently set according to the music genre.

  According to claim 2 of the present application, in the in-vehicle acoustic device according to claim 1, the storage unit further stores frequency characteristics for a call, and the control unit receives an incoming call to the mobile phone. When detected, the frequency characteristic currently set according to the music genre is invalidated, and the frequency characteristic for call is read from the storage unit and set.

  According to a third aspect of the present invention, in the in-vehicle audio device according to the second aspect, the control unit invalidates a frequency characteristic currently set according to the music genre, and the call The frequency characteristic set for the user is read from the storage unit and set, and when it is detected that the mobile phone call is finished, the invalid frequency characteristic is read from the storage unit and set. .

The invention according to claim 4
A storage unit storing optimum frequency characteristics for each music genre, an operation unit for selecting a music genre, and a control unit for reading and setting the frequency characteristics from the storage unit,
A method of controlling an in-vehicle audio device that is connected wirelessly to a mobile phone to form a hands-free system,
When the control unit detects an incoming call to the mobile phone, the control unit invalidates a frequency characteristic currently set according to the music genre, and stores the frequency characteristic set for a call in the storage unit When,
When it is detected that the call of the mobile phone is terminated, the invalid frequency characteristic is read from the storage unit and set.

  By providing the above-described configuration, the present invention has the following excellent effects. That is, according to the invention of claim 1 of the present application, when the in-vehicle acoustic device detects an incoming call to the mobile phone, the frequency characteristic currently set according to the music genre is invalidated. Even if a frequency characteristic that emphasizes bass is set, a flat output state is obtained during a call, and a call can be made in a state where it is easy to hear the call voice from the other party.

  Furthermore, according to the invention according to claim 2 of the present application, in the in-vehicle acoustic device according to claim 1, the storage unit stores the frequency characteristics for calls, and when an incoming call to a mobile phone is detected, Since the frequency characteristic set according to the music genre is invalidated and the frequency characteristic for the call is set, it is possible to make a call with the other party in a state where it is easier to hear.

  Furthermore, according to the invention according to claim 3 of the present application, in the in-vehicle acoustic device according to claim 2, when the in-vehicle acoustic device receives an incoming call, the frequency characteristics currently set according to the music genre are invalidated. In addition, when the frequency characteristic set for the call is read from the storage unit and set, and it is detected that the mobile phone call is finished, the invalid frequency characteristic is read from the storage unit and set. To do. Therefore, it is not necessary for the user to reset the music genre after the call is finished, and convenience is improved.

  The in-vehicle audio apparatus according to the present invention will be described in detail below with reference to the drawings. However, the example shown below shows the best embodiment, and is not intended to limit the technical idea of the present invention to the invention of the in-vehicle acoustic device, and may be accompanied by various other changes. It is.

  FIG. 1 is a block diagram showing a configuration of an on-vehicle acoustic device of the present invention. The in-vehicle acoustic device 10 includes a control unit 11, and the control unit 11 is connected to a tuner unit 12 that outputs an audio source, a disc playback unit 14, and a wireless transmission / reception unit 15.

  The control unit 11 includes a microprocessor having a RAM, a ROM, and a processor, and a CPU (central processing control unit) controls the operation of each unit based on a program stored in the ROM. The control unit 11 further includes a storage unit 111 and an incoming call detection unit 112.

  The storage unit 111 stores an optimum frequency characteristic for each music genre. When a music genre is selected, the corresponding frequency characteristic is read from the storage unit 111 and the frequency characteristic is set in the equalizer 17. The incoming call detection unit 112 is for detecting whether or not the mobile phone 20 has received an incoming call on the in-vehicle audio device 10 side. When the incoming call detection unit 112 detects an incoming call, the control unit 11 executes a predetermined program.

  That is, when an incoming call is detected, the audio output is stopped or the volume is lowered to a certain value so that the user can easily notice the ring tone. At the same time, a frequency characteristic preset for a call is read from the storage unit 111, and the control unit 11 sets this frequency characteristic in the equalizer 17.

  At the same time that the frequency characteristics for a call are set in the equalizer 17, the control unit 11 temporarily stores the frequency characteristics at the time of the incoming call in the storage unit 111. When the incoming call detection unit 112 detects the end of the call, the control unit 11 stores the frequency characteristic. The frequency characteristic at the time of incoming call stored in the unit 111 is read out and reset in the equalizer 17. This will be described in detail later.

  The tuner unit 12 receives and demodulates AM / FM radio broadcast radio waves with the antenna 121, and outputs an audio signal to the control unit 11. The disc reproducing unit 134 is loaded with an external disc medium such as a CD or MD and read out, and outputs an audio signal to the control unit 11. The wireless transmission / reception unit 15 is an interface for connecting the mobile phone 20 and the in-vehicle acoustic device 10, and is for forming a hands-free system by transmitting / receiving audio signals by wireless communication. The configuration of the hands-free system will be described later.

  Furthermore, the on-vehicle acoustic device 10 includes a display unit 13, a microphone 16, an equalizer 17, an amplifier 18, a speaker 181, and an operation unit 19. The display unit 13 includes a liquid crystal panel and displays operation information and the like to the user. The display unit 13 also functions as a part of the operation unit 19 by mounting a touch panel.

  As will be described later, when the music playback is started, an icon for setting the music genre, an indicator indicating the currently set frequency characteristic, and the like are displayed on the display screen, and the user can arbitrarily select the music genre and finely select the frequency characteristic. Adjustments can be made on the display screen.

  The microphone 16 is for intercepting the voice for the user's call target when the hands-free function is activated. The equalizer 17 corrects the frequency characteristic of the audio signal output from the audio source. The amplifier 18 amplifies the audio signal corrected by the equalizer 17 and the speaker 181 outputs it. The operation unit 19 includes operation keys provided on the casing, and is used for selecting an audio source to be reproduced and adjusting a volume.

  The in-vehicle acoustic device 10 is connected to the mobile phone 20 by radio and forms a hands-free system as a whole. The outline of the hands-free system will be described below. In the operation of a general mobile phone, the mobile phone 20 performs processing related to a series of calls in response to a user operation by the mobile phone unit 22. That is, the mobile phone unit 22 establishes a line with the call target in response to the user's operation, acquires the user's voice with a microphone (not shown), sends it to the call target, and does not show the voice obtained from the call target. Provide to the user through a speaker.

  On the other hand, when an operation by the hands-free system is instructed by the user, the mobile phone unit 22 receives from the in-vehicle acoustic device 10 received by the wireless transmission / reception unit 21 instead of the operation by the operator of the mobile phone 20. The line is connected in response to the control command, and the line is connected by notifying the vehicle-mounted acoustic device of an incoming call or the like via the wireless transmission / reception unit 21.

  Further, when the line is further connected, the user's voice acquired by the microphone 16 provided in the in-vehicle acoustic device 10 instead of the microphone provided in the mobile phone 20 is received by the wireless transmission / reception unit 21 and transmitted to the call target. The sound obtained from the call target is not output from the speaker of the mobile phone 20 but is transmitted to the in-vehicle acoustic device 10 by the wireless transmission / reception unit 21 and output from the speaker 181 via the control unit 11, equalizer 17, and amplifier 18. .

  By using hands-free, the user can talk with the other party while driving the car. Furthermore, according to the present invention, when a music genre is set and music is played back, the other party's voice is not output in a state where it is difficult to hear the person's voice even when there is an incoming call, and a hands-free call The convenience is further improved.

  FIG. 2 is a diagram showing a frequency characteristic setting screen. 2A is a flat mode, FIG. 2B is a classic mode, FIG. 2C is a lock mode, FIG. 2D is a jazz mode, and FIG. 2E is a conversation mode setting screen. ing.

  With reference to Fig.2 (a), the structure of a setting screen is demonstrated first. A mode icon indicating the currently set music genre is arranged on the right end of the screen. The frequency characteristic in FIG. 2A is the flat mode, and the “flat” icon is highlighted. The user can select a desired mode from the icons according to the genre of the audio source to be listened to. For example, if the user listens to classical music, the classic icon is selected. Then, the screen is switched to a screen as shown in FIG. Lock, jazz, etc. can be selected by similar operations.

  On the left center of the screen, a gauge indicating the frequency characteristics currently set in the equalizer 17 is displayed for each frequency band. The frequency bands are arranged so that the frequency increases from left to right, such as 60 Hz, 150 Hz... 6 KHz, and 15 KHz from the left. Each gauge displays an indicator indicating the output of each frequency band. For example, in FIG. 2A showing the flat mode, the indicator is displayed in the center in all gauges, and it can be seen that the output is flat and constant in all frequency bands.

  On the other hand, in FIG. 2 (c) showing the lock mode, the indicator is located at the center (± 0 dB) in the frequency band of 1 KHz indicating the middle sound range and has a constant output, but in the low frequency range and the high frequency range. Shows that the output is increased. That is, the music is reproduced in a state where the output of the low treble range is increased and the heavy bass and the super treble are emphasized while the output of the mid range is kept as it is. Similarly, in FIG. 2D showing the jazz mode, it can be seen that the output in the frequency band near the mid-tone range is increased. In this case, the music is reproduced with the output of the low and high sound range as it is, with the middle sound range being emphasized.

  On the other hand, in FIG. 2 (c) showing the lock mode, the indicator is located at the center (± 0 dB) in the frequency band of 1 KHz indicating the middle sound range and has a constant output, but in the low frequency range and the high frequency range. Shows that the output is increased. That is, the music is reproduced in a state where the output of the low treble range is increased and the heavy bass and the super treble are emphasized while the output of the mid range is kept as it is. Similarly, in FIG. 2D showing the jazz mode, it can be seen that the output in the frequency band near the mid-tone range is increased. In this case, the music is reproduced with the output of the low and high sound range as it is, with the middle sound range being emphasized.

  The frequency characteristic data for each music genre as described above is stored in the storage unit 111 in association with each music genre, read according to the user's selection operation, and set in the equalizer 17.

  Furthermore, an operation icon for adjusting the frequency characteristic is arranged at the lower end of the screen. The user can adjust the frequency characteristic set for each music genre by operating this icon. For example, when the user wants to play rock music, “lock” is selected from the mode icons arranged at the right end of the screen.

  When “LOCK” is selected, a screen as shown in FIG. 2C is displayed on the screen. However, there is a case where the user wants to listen in a state where the deep bass is further emphasized. In this case, the user first presses the “change” icon. When the “change” icon is pressed, the position of the indicator displayed on the screen can be adjusted, and the indicator of the gauge showing the frequency band of 60 Hz is moved further upward to emphasize the deep bass.

  Then, the output of the frequency band of 60 Hz is further increased by +3 dB, and the deep bass is further emphasized and output from the speaker. When the user wants to listen to this state whenever he / she plays the rock music, the frequency characteristic of the lock mode is adjusted and stored in the storage unit 111 by pressing the “save” icon. The frequency characteristics in the adjusted state are also set in the equalizer 17 even when it is output.

  As a feature of the present invention, the on-vehicle acoustic device 10 stores frequency characteristics for a call in the storage unit 111. FIG. 2E shows the frequency characteristics of the conversation mode. As is apparent from the figure, in the conversation mode, the output of the low and high sound range is greatly reduced, while the output of the mid sound range is increased compared to the flat.

  This is because a human voice can be heard in the middle range, so that the output of the middle range is increased to make it easier to hear the other party's voice even in an environment where external noise is intense such as during driving. Furthermore, by reducing the output of the low and high range, the voice of the other party stands out, and noise from the other party becomes difficult to enter as noise. Further, when other music genres are set, sound quality effects such as reverberation effect characteristics may be set in addition to frequency characteristics, but such sound quality effects are invalidated in the conversation mode.

  The frequency characteristics of the conversation mode are read from the storage unit 111 and set in the equalizer 17 when the incoming call detection unit 112 detects that the mobile phone 20 has received an incoming call. When the call ends, the mode is switched to the mode set at the time of the incoming call, and the equalizer 17 also sets the frequency characteristic at the time of the incoming call again.

  Hereinafter, the operation of the in-vehicle acoustic device of the present invention will be described based on the flowchart shown in FIG. FIG. 3 is a flowchart for explaining the operation of the in-vehicle acoustic device. When an operation for reproducing music is performed in step S1, processing is started. At this time, the user selects a desired audio source to be reproduced via the operation unit 19. When the audio source is selected, the control unit 11 switches the audio source of the signal output to the equalizer 17 to the selected audio source.

  For example, when a user listens to a CD, the CD is loaded into the disc playback unit 14 and the playback unit is selected as the CD. When CD is selected as the audio source, the control unit 11 instructs the disc playback unit 14 to play back, and the read audio signal is output to the equalizer 17 via the control unit 11.

  The on-vehicle acoustic device 10 is set to have a flat frequency characteristic at startup, and the equalizer 17 is set to a frequency characteristic without correction of a constant output over each frequency band as shown in FIG. . Therefore, the frequency characteristic of the audio signal read from the CD is not corrected by the equalizer 17 but is directly amplified by the amplifier 18 and output from the speaker 181.

  In the process of step S2, it is determined whether or not a change of the music genre is instructed. That is, as shown in FIG. 2, if the selection of the music genre is changed by an operation such as pressing the mode icon arranged at the right end of the screen, it is determined Yes, and if there is no selection change, No is determined and the process proceeds to step S4. Unless the incoming call of the mobile phone 20 is detected, the process returns to step S1, and the processes of steps S2 to S4 are repeated until a music genre change instruction is issued.

  Hereinafter, the operation of the in-vehicle acoustic device of the present invention will be described based on the flowchart shown in FIG. FIG. 3 is a flowchart for explaining the operation of the in-vehicle acoustic device. When an operation for reproducing music is performed in step S1, processing is started. At this time, the user selects a desired audio source to be reproduced via the operation unit 19. When the audio source is selected, the control unit 11 switches the audio source of the signal output to the equalizer 17 to the selected audio source.

  For example, when a user listens to a CD, the CD is loaded into the disc playback unit 14 and the playback unit is selected as the CD. When CD is selected as the audio source, the control unit 11 instructs the disc playback unit 14 to play back, and the read audio signal is output to the equalizer 17 via the control unit 11.

  The on-vehicle acoustic device 10 is set to have a flat frequency characteristic at startup, and the equalizer 17 is set to a frequency characteristic without correction of a constant output over each frequency band as shown in FIG. . Therefore, the frequency characteristic of the audio signal read from the CD is not corrected by the equalizer 17 but is directly amplified by the amplifier 18 and output from the speaker 181.

  In the process of step S2, it is determined whether or not a change of the music genre is instructed. That is, as shown in FIG. 2, if the selection of the music genre is changed by an operation such as pressing the mode icon arranged at the right end of the screen, it is determined Yes, and if there is no selection change, No is determined and the process proceeds to step S4. Unless the incoming call of the mobile phone 20 is detected, the process returns to step S1, and the processes of steps S2 to S4 are repeated until a music genre change instruction is issued.

  If it is determined in step S2 that there has been an instruction to change the music genre (Y), the process proceeds to step S3, and the frequency characteristics of the selected music genre are read and set. That is, the frequency characteristic corresponding to the music genre selected by the user is read out from the frequency characteristics stored in the storage unit 111 in association with each music genre, and the control unit 11 sets this in the equalizer 17.

  For example, when the user presses the “classic” icon among the mode icons, a screen as shown in FIG. 2B is displayed on the display unit 13, and the frequency displayed at the equalizer 17 is at the center of the screen. Frequency characteristics for each band are set. In the genre “Classic”, the frequency characteristic is clearly increased from FIG. 2B, and the output of the low and high range is increased and the output of the mid range is decreased. Therefore, the low and high range is emphasized from the speaker 181. Sound is output with the midrange slightly weakened.

  When the setting of the frequency characteristic is completed, the process proceeds to step S4, and it is determined whether or not the mobile phone 20 has received an incoming call. As described above, the control unit 11 includes the incoming call detection unit 112, and can detect whether the mobile phone 20 has received an incoming call on the in-vehicle acoustic device 10 side. If no incoming call is detected (N), the process returns to step S2, and the processes of steps S2 to S4 are repeated until an incoming call is detected.

  When an incoming call is detected in the process of step S4 (Y), the process proceeds to the process of step S5, and the frequency characteristic of the genre “conversation” is read and set. That is, when the incoming call detection unit 112 detects an incoming call, the control unit 11 reads out the frequency characteristic corresponding to the genre “conversation” from the storage unit 111 and sets it in the equalizer 17. At this time, a screen as shown in FIG. 2E is displayed on the display unit 13, and the frequency characteristics for each frequency band as set in the center of the screen are set in the equalizer 17. The “conversation” here is a “call” using the mobile phone 20.

  In the genre “conversation”, the frequency characteristics of the genre “conversation” are clearly enhanced from the speaker 181 because the output of the mid-range is increased and the output of the low-high range is greatly reduced as clearly shown in FIG. The sound is output in a state where the low-high range is considerably weakened.

  In the process of step S5, the frequency characteristic corresponding to the genre “conversation” is set. At the same time, the music genre set at the time of the incoming call is temporarily stored in the storage unit 111.

  When the genre “conversation” is set in step S5, the frequency characteristic is not changed until the call is finished. In the process of step S6, it is determined whether or not the call has ended. If it is determined that the call has not ended (N), the process returns to step S6 again, and the process is repeated until the call ends.

  On the other hand, when the incoming call detection unit 112 detects that the call has ended in the process of step S6 (Y), the process proceeds to the process of step S7, and the music genre at the time of the incoming call stored in the storage unit 111 is read and reset. The For example, when the user sets the genre “classic” at the time of an incoming call, the frequency characteristic corresponding to the genre “classic” is read from the storage unit 111 and set in the equalizer 17. Then, in step S8, it is determined whether or not music reproduction has ended. If music reproduction has ended, the process ends. If music reproduction has not ended, the process returns to step S2.

  With this configuration, the user can listen to music with an optimal frequency characteristic without performing an operation of changing the music genre from “conversation” to “classic” after the call is finished. Since it is difficult for the driver to operate the audio device during driving, convenience is improved by automatically resetting the music genre at the time of incoming call.

  In the present embodiment, the frequency characteristic preset for the telephone call is stored in the storage unit 111, and this is set in the process of step S5. However, in addition to this, when an incoming call is detected, it is set so far. The frequency characteristic setting may be invalidated, that is, in a flat state.

It is a block diagram which shows the structure of the vehicle-mounted audio apparatus of this invention. FIG. 2 is a diagram showing a frequency characteristic setting screen. 2A is a flat mode, FIG. 2B is a classic mode, FIG. 2C is a lock mode, FIG. 2D is a jazz mode, and FIG. 2E is a conversation mode setting screen. ing. It is a flowchart for demonstrating operation | movement of the vehicle-mounted audio apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Vehicle-mounted acoustic apparatus 11 Control part 111 Memory | storage part 112 Incoming detection part 12 Tuner part 13 Display part 14 Disc reproduction | regeneration part 15 Wireless transmission / reception part 16 Microphone 17 Equalizer 18 Amplifier 181 Speaker 19 Operation part 20 Mobile phone 21 Wireless transmission / reception part 22 Mobile phone Part

Claims (4)

A storage unit storing optimum frequency characteristics for each music genre, an operation unit for selecting a music genre, and a control unit for reading and setting the frequency characteristics from the storage unit,
In an in-vehicle audio device that is connected wirelessly to a mobile phone to form a hands-free system,
When the control unit detects an incoming call to the mobile phone, the control unit invalidates a frequency characteristic currently set according to the music genre.   The storage unit further stores a frequency characteristic for a call, and when the control unit detects an incoming call to the mobile phone, the frequency unit currently set according to the music genre is invalidated, The in-vehicle acoustic device according to claim 1, wherein the frequency characteristic for the call is read from the storage unit and set.   The control unit invalidates the frequency characteristic currently set in accordance with the music genre, reads out and sets the frequency characteristic set for the call from the storage unit, and makes a call on the mobile phone The in-vehicle acoustic device according to claim 2, wherein when the termination is detected, the invalid frequency characteristic is read from the storage unit and set. A storage unit storing optimum frequency characteristics for each music genre, an operation unit for selecting a music genre, and a control unit for reading and setting the frequency characteristics from the storage unit,
A method of controlling an in-vehicle audio device that is connected wirelessly to a mobile phone to form a hands-free system,
When the control unit detects an incoming call to the mobile phone, the control unit invalidates a frequency characteristic currently set according to the music genre, and stores the frequency characteristic set for a call in the storage unit When,
A method for controlling an on-vehicle acoustic device comprising: a step of reading out and setting the invalid frequency characteristic from the storage unit when detecting that a telephone conversation of a mobile phone is terminated.

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