WO2018025398A1 - Équipement de communication, dispositif mains libres embarqué dans un véhicule et dispositif de sortie sonore - Google Patents

Équipement de communication, dispositif mains libres embarqué dans un véhicule et dispositif de sortie sonore Download PDF

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Publication number
WO2018025398A1
WO2018025398A1 PCT/JP2016/073090 JP2016073090W WO2018025398A1 WO 2018025398 A1 WO2018025398 A1 WO 2018025398A1 JP 2016073090 W JP2016073090 W JP 2016073090W WO 2018025398 A1 WO2018025398 A1 WO 2018025398A1
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WO
WIPO (PCT)
Prior art keywords
output
unit
volume
sound quality
sound
Prior art date
Application number
PCT/JP2016/073090
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English (en)
Japanese (ja)
Inventor
智彰 氏丸
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2016/073090 priority Critical patent/WO2018025398A1/fr
Publication of WO2018025398A1 publication Critical patent/WO2018025398A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/04—Circuits for transducers, loudspeakers or microphones for correcting frequency response

Definitions

  • the present invention relates to a communication device that is communicably connected to another device such as a mobile phone, processes an audio signal input from the device, and outputs the signal via a speaker or the like.
  • the present invention has been made to solve the above-described problems.
  • an audio signal acquired from a counterpart device is processed by a communication device and an output sound is output, the output sound is output at a set volume or a set sound quality.
  • the purpose is to obtain a communication device that can suppress a decrease in the number of opportunities.
  • a communication device includes a communication interface unit that acquires an audio signal output by a counterpart device that is communicably connected, an audio signal acquired by the communication interface unit, and an output corresponding to the audio signal
  • An output adjustment unit that adjusts the volume or sound quality of the sound, and an adjustment capability that the output adjustment unit has the volume or sound quality of the output sound corresponding to the audio signal using the audio signal acquired by the communication interface unit
  • an adjustability determination unit that determines whether or not the sound volume can be adjusted to the set sound volume or the set sound quality within the range.
  • FIG. 1 It is a block diagram which shows the structure of the vehicle-mounted hands-free apparatus which concerns on Embodiment 1 of this invention.
  • 2A and 2B are diagrams showing a hardware configuration example of the in-vehicle hands-free device according to Embodiment 1 of the present invention.
  • It is a flowchart which shows an example of a process of the vehicle-mounted hands-free apparatus which concerns on Embodiment 1 of this invention.
  • FIG. 1 shows a configuration of an in-vehicle hands-free device 1 according to Embodiment 1 of the present invention.
  • FIG. 1 shows a mobile phone 2 that is communicably connected to an in-vehicle hands-free device 1, a microphone 3 that outputs an audio signal to the in-vehicle hands-free device 1, and an audio signal that is output from the in-vehicle hands-free device 1.
  • a speaker 4 that outputs an output sound corresponding to the audio signal and a display device 5 for displaying an image are also shown.
  • the voice spoken by the user of the in-vehicle hands-free device 1 is collected by the microphone 3 and sent to the telephone conversation partner via the in-vehicle hands-free device 1 and the mobile phone 2. Then, the voice of the telephone conversation partner is output from the speaker 4 via the mobile phone 2 and the in-vehicle handsfree device 1.
  • the in-vehicle hands-free device 1 includes a communication interface unit 10, a hands-free engine 11, an output level adjustment unit 12, an input level adjustment unit 13, an adjustment availability determination unit 14, a notification unit 15, and a setting change unit 16. Is provided.
  • the in-vehicle hands-free device 1 may be incorporated in the in-vehicle navigation device or a portable hands-free device brought into the vehicle.
  • the hands-free engine 11 processes the audio signal from the mobile phone 2 output from the communication interface unit 10 and outputs the processed audio signal to the output level adjustment unit 12. For example, the hands-free engine 11 performs an automatic gain control process in which the signal level of the audio signal output from the communication interface unit 10 is always adjusted to a constant level and output to the output level adjustment unit 12.
  • the hands-free engine 11 processes the audio signal output from the input level adjustment unit 13 and outputs the processed audio signal to the communication interface unit 10.
  • the hands-free engine 11 performs known echo cancellation processing and noise cancellation processing on the audio signal output from the input level adjustment unit 13.
  • the output level adjustment unit 12 processes the audio signal acquired by the communication interface unit 10 from the mobile phone 2 and processed by the hands-free engine 11 and outputs the processed audio signal to the speaker 4. At that time, the output level adjustment unit 12 amplifies the audio signal, for example, and raises or lowers the signal level. When the amplification factor is less than 1, the signal level decreases. Thereby, the volume of the output sound corresponding to the sound signal output from the speaker 4 is increased or decreased. Further, the output level adjustment unit 12 performs an equalization process on the audio signal acquired by the communication interface unit 10 from the mobile phone 2 and processed by the hands-free engine 11, for example, and changes the frequency characteristics. As a result, the output sound corresponding to the audio signal output from the speaker 4 changes the sound quality of the output sound as the sound in a specific frequency band is emphasized or suppressed.
  • the communication interface unit 10 processes the audio signal from the mobile phone 2 and the volume of the output sound output from the speaker 4 corresponding to the audio signal or
  • the configuration for adjusting the sound quality is collectively referred to as an output adjustment unit.
  • the in-vehicle hands-free device 1 may be configured such that the amplification process is performed only by the hands-free engine 11 or only by the output level adjustment unit 12, and the equalization process is performed by the hands-free engine 11 instead of the output level adjustment unit 12.
  • the in-vehicle hands-free device 1 may be configured as described above, or the in-vehicle hands-free device 1 may be configured so that equalization processing is performed by both the output level adjustment unit 12 and the hands-free engine 11.
  • the input level adjustment unit 13 processes an audio signal collected and output by the microphone 3 and outputs it to the hands-free engine 11. At that time, the input level adjustment unit 13 performs, for example, a process of amplifying the audio signal.
  • the adjustment availability determination unit 14 sets the volume or sound quality of the output sound to the set volume or the set sound quality. It is determined whether or not the vehicle-mounted hands-free device 1 can be adjusted. For example, when the mobile phone 2 outputs an audio signal with a very low signal level, even if the handsfree engine 11 and the output level adjustment unit 12 amplify the audio signal as much as possible, the output sound output from the speaker 4 is May be lower than the set volume.
  • the audio signal is output from the speaker 4.
  • the output sound that is output may be out of the set sound quality.
  • the speaker The output sound output from 4 does not have the set volume or set sound quality.
  • the adjustment availability determination unit 14 compares the signal level of the audio signal from the mobile phone 2 acquired by the communication interface unit 10 with the first threshold value. Then, when the signal level of the audio signal is equal to or higher than the first threshold, if the handsfree engine 11 and the output level adjustment unit 12 amplify, the volume of the output sound output from the speaker 4 is determined to be the set volume. .
  • the set volume does not indicate any single value but may indicate all values included in an arbitrary fixed range. That is, the minimum volume that the user can hear may be set as a lower limit, and all the volumes that are equal to or higher than the lower limit may be collectively set as the set volume.
  • the volume of the output sound output from the speaker 4 is determined to be equal to or higher than the minimum volume that can be heard by the user due to amplification by the hands-free engine 11 and the output level adjustment unit 12.
  • a lower limit value of the volume that the user can hear without feeling stress may be used.
  • the adjustability determination unit 14 may compare the signal level of the audio signal from the mobile phone 2 acquired by the communication interface unit 10 with the second threshold value. Then, when the signal level of the audio signal is equal to or lower than the second threshold, if the handsfree engine 11 and the output level adjustment unit 12 amplify, it is determined that the volume of the output sound output from the speaker 4 becomes the set volume. .
  • the amplification at this time substantially means attenuation with an amplification factor of less than 1.
  • This set sound volume may also indicate all the values included in an arbitrary fixed range rather than an arbitrary single value. That is, the volume that starts to feel noisy by the user may be set as an upper limit, and all the volumes that are less than or equal to the upper limit may be set as a set volume.
  • the volume of the output sound output from the speaker 4 can be suppressed below the volume at which the user begins to feel noisy.
  • an upper limit value of the volume at which the user can listen without feeling stress may be used.
  • the signal level of the audio signal from the mobile phone 2 is not less than the first threshold and not more than the second threshold, if it is amplified by the hands-free engine 11 and the output level adjusting unit 12, the output sound output from the speaker 4 is output. May be determined to be the set volume.
  • the first threshold value and the second threshold value are set according to the amplification factor that can be set by the hands-free engine 11 and the output level adjustment unit 12, that is, the amplification capability.
  • the first threshold value decreases as the amplification factor that can be set by the hands-free engine 11 and the output level adjustment unit 12 increases.
  • the sound quality that the user can hear without a sense of incongruity may be set as the set sound quality.
  • the sound quality of the output sound output from the speaker 4 is the sound quality that the user can hear without a sense of incongruity by the equalization processing in the output level adjustment unit 12.
  • the sound quality that the user does not feel stress even when there is a sense of incongruity may be set sound quality.
  • the adjustability determination unit 14 determines the volume or sound quality of the output sound output from the speaker 4 in response to the audio signal from the mobile phone 2 output by the communication interface unit 10, and the hands-free engine 11 and It is determined whether or not the output level adjustment unit 12 can be adjusted to the set volume or the set sound quality within the range of the adjustment capability of the output level adjustment unit 12.
  • the determination result by the adjustment availability determination unit 14 is output to the notification unit 15, the setting change unit 16, and the like.
  • the notification unit 15 provides information to the user using the determination result by the adjustment availability determination unit 14, the processing result by the setting change unit 16, and the like.
  • the notification unit 15 may output an image signal and display an image as shown in FIG. 4 to be described later on the display device 5, or output an audio signal and output information providing sound from the speaker 4. Also good.
  • the setting changing unit 16 outputs a control signal for changing the setting relating to the volume or sound quality on the mobile phone 2 side to the mobile phone 2 through the communication interface unit 10 as necessary.
  • the mobile phone in consideration of the amplification factor that can be set by the hands-free engine 11 and the output level adjustment unit 12, the mobile phone can control the minimum signal level required for the output sound volume from the speaker 4 to be the set sound volume by the control signal. 2 is notified.
  • a signal level closer to the set sound volume than the signal level may be notified instead of the minimum required signal level.
  • the communication interface unit 10 is a transmission / reception device 100.
  • the transmission / reception apparatus 100 may be configured with separate transmission apparatuses and reception apparatuses as apparatuses.
  • the functions of the hands-free engine 11, the output level adjustment unit 12, the input level adjustment unit 13, the adjustment availability determination unit 14, the notification unit 15, and the setting change unit 16 are realized by a processing circuit.
  • the processing circuit may be dedicated hardware or a CPU (Central Processing Unit) that executes a program stored in a memory.
  • the CPU is also called a central processing unit, a processing unit, an arithmetic unit, a microprocessor, a microcomputer, a processor, and a DSP (Digital Signal Processor).
  • the processing circuit 101 is, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or a combination thereof.
  • the functions of the hands-free engine 11, the output level adjustment unit 12, the input level adjustment unit 13, the adjustment availability determination unit 14, the notification unit 15, and the setting change unit 16 may be realized by combining separate processing circuits 101.
  • the functions of the respective units may be realized by one processing circuit 101.
  • the processing circuit includes the above-described hands-free engine 11, output level adjustment unit 12, input level adjustment unit 13, adjustment availability determination unit 14, notification unit 15, and setting by hardware, software, firmware, or a combination thereof.
  • the function of each part of the change part 16 is realizable.
  • the adjustability determination unit 14 adjusts the volume or sound quality of the output sound output from the speaker 4 in response to the audio signal from the mobile phone 2 output by the communication interface unit 10, the hands-free engine 11 and the output level adjustment. It is determined whether or not the volume can be adjusted to the set volume or the set sound quality within the range of the adjustment capability of the unit 12 (step ST2). The determination result is output to the notification unit 15.
  • the setting change unit 16 sends a control signal for changing the setting related to the volume or sound quality on the mobile phone 2 side to the communication interface unit 10. Via the mobile phone 2 (step ST4).
  • the mobile phone 2 that has received the control signal changes the setting related to the volume or sound quality of the mobile phone based on the control signal.
  • the setting changing unit 16 automatically outputs a control signal for changing the setting related to the volume or sound quality on the mobile phone 2 side without giving the user an opportunity to select the setting change on the mobile phone 2 side. It may be. In this case, it is preferable that the notification unit 15 notifies the user that the setting relating to the volume or sound quality on the mobile phone 2 side has been changed. However, in order to simplify the configuration, the notification unit 15 may be omitted from the in-vehicle hands-free device 1 and the process may be performed without notifying the user.
  • the notification unit 15 notifies the user when it is determined that the adjustment cannot be made to the set sound volume or the set sound quality within the range of the adjustment capability of the hands-free engine 11 and the output level adjustment unit 12. May be. Thereby, the user can recognize whether or not the setting on the mobile phone 2 side is changed without changing the setting on the in-vehicle handsfree device 1 side.
  • the setting changing unit 16 may be omitted from the in-vehicle hands-free device 1 and the user may operate the mobile phone 2 to change the setting.
  • the notification unit 15 determines the volume or sound quality of the mobile phone 2 when it is determined that the set sound volume or the set sound quality cannot be adjusted within the range of the adjustment capability of the hands-free engine 11 and the output level adjustment unit 12. You may make it notify the advice regarding a setting.
  • the notification unit 15 acquires a comparison result between the signal level and the first threshold value or the second threshold value, a comparison result between the analyzed frequency characteristic and the comparison frequency characteristic, and the like from the adjustment availability determination unit 14, and the mobile phone 2 side Analyze how to change the settings of. For example, when the signal level is less than the first threshold value, advice is given to increase the volume setting on the mobile phone 2 side.
  • the notification unit 15 uses the signal level or frequency characteristic to be notified by the control signal from the setting change unit 16 and the audio signal from the mobile phone 2 acquired by the communication interface unit 10, on the mobile phone 2 side. You may analyze how the settings should be changed. The user can smoothly change the setting on the mobile phone 2 side by receiving the advice. For example, if the mobile phone 2 is set to the minimum volume and cannot be adjusted to the set volume by the hands-free engine 11 and the output level adjusting unit 12, “only the in-vehicle hands-free device because the set volume of the mobile phone is very low. In this case, the notification unit 15 notifies that the adjustment cannot be completed.
  • the in-vehicle hands-free device 1 uses the in-vehicle hands-free device 1 as a communication device, and the mobile phone 2 connected to the in-vehicle hands-free device 1 so as to be communicable with the counterpart device.
  • the case where the output sound is finally output from the speaker 4 and a hands-free call is performed has been described as an example.
  • an audio reproduction device that reproduces music or the like
  • an audio output device that obtains an audio signal from the audio reproduction device and finally outputs an output sound corresponding to the audio signal.
  • the configuration as in the first embodiment may be applied.
  • a voice playback device having a voice playback function such as a portable music player is a communication device.
  • a voice output device such as a Bluetooth speaker or an in-vehicle navigation device that can be connected to the partner device or the voice playback device is a communication device.
  • the first embodiment can be applied to a communication device that acquires an audio signal from a counterpart device that is communicably connected and finally outputs an output sound corresponding to the audio signal.
  • the in-vehicle hands-free device 1 can be controlled by the notification unit 15 and the setting change unit 16 using this determination, and suppresses a decrease in the chance that output sound is output from the speaker 4 with a desired set volume or set sound quality. be able to.
  • the adjustment determination unit 14 determines that the adjustment cannot be made to the set volume or the set sound quality within the range of the adjustment capability of the hands-free engine 11 and the output level adjustment unit 12, the volume or sound quality on the mobile phone 2 side is determined.
  • the setting changing unit 16 for outputting a control signal for changing the setting is provided.
  • the mobile phone 2 also includes a notification unit 15 that selectively notifies the user of the change in the volume or sound quality setting, and the setting change unit 16 outputs a control signal when the execution of the setting change is selected.
  • the volume or sound quality setting on the mobile phone 2 side is changed. In this way, the user can decide by himself whether or not to change the setting on the mobile phone 2 side which is the counterpart device.
  • the user since the user only has to select whether or not to change the setting, this is particularly convenient when the user is a driver and it is difficult to perform complicated device operations.
  • the notification unit 15 is provided to notify that the setting change unit 16 has output a control signal to change the volume or sound quality setting on the mobile phone 2 side.
  • the user can know that the setting of the volume or sound quality on the mobile phone 2 side that is the counterpart device has been changed. Therefore, when the connection between the in-vehicle hands-free device 1 and the mobile phone 2 is released and the mobile phone 2 is used alone, if the setting on the mobile phone 2 side is changed, the output sound with the same volume or sound quality as before is changed. Can be obtained in advance from the mobile phone 2.
  • a notification unit 15 that notifies that effect. It was decided to prepare. In this case, in order to obtain an output sound having a preferable volume or sound quality from the speaker 4, it is meaningless to change the setting on the in-vehicle handsfree device 1 side, and the setting on the mobile phone 2 side which is the counterpart device is changed. The user can notice whether or not.
  • the adjustment determination unit 14 determines that the adjustment cannot be made to the set volume or the set sound quality within the range of the adjustment capability of the hands-free engine 11 and the output level adjustment unit 12, the volume or sound quality on the mobile phone 2 side is determined.
  • the notification part 15 which notifies the advice regarding the setting of is decided to be provided. In this way, the user can know how to change the setting on the mobile phone 2 side, which is the counterpart device, and can smoothly change the setting.
  • the present invention can be applied to the in-vehicle hands-free device 1 that is connected to the mobile phone 2 having a telephone function and operates as a communication device.
  • the present invention can be applied to an audio output device that is connected to an audio reproducing device having an audio reproducing function and operates as a communication device.
  • any component of the embodiment can be modified or any component of the embodiment can be omitted within the scope of the invention.
  • the communication device determines whether or not the communication device can be adjusted to the set volume or the set sound quality within the range of the adjustment capability of the communication device. Therefore, it is suitable for use as an in-vehicle hands-free device that is communicably connected to a mobile phone and outputs an audio signal from the mobile phone via a speaker.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Telephone Function (AREA)

Abstract

L'invention concerne un signal sonore en provenance d'un téléphone portable (2) acquis par une unité d'interface de communication (10), lequel signal est traité par un moteur mains libres (11) et une unité de réglage du niveau de sortie (12), permettant ainsi le réglage du volume sonore ou de la qualité sonore du son de sortie émis en provenance d'un haut-parleur (4) en réponse au signal sonore. Une unité de détermination de capacité de réglage (14) détermine si le volume sonore ou la qualité sonore du son de sortie émis par le haut-parleur (4) est réglable ou non à un volume sonore défini ou une qualité sonore définie dans la plage de capacité de réglage du moteur mains libres (11) et de l'unité de réglage de niveau de sortie (12).
PCT/JP2016/073090 2016-08-05 2016-08-05 Équipement de communication, dispositif mains libres embarqué dans un véhicule et dispositif de sortie sonore WO2018025398A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2016/073090 WO2018025398A1 (fr) 2016-08-05 2016-08-05 Équipement de communication, dispositif mains libres embarqué dans un véhicule et dispositif de sortie sonore

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2016/073090 WO2018025398A1 (fr) 2016-08-05 2016-08-05 Équipement de communication, dispositif mains libres embarqué dans un véhicule et dispositif de sortie sonore

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010273017A (ja) * 2009-05-20 2010-12-02 Sharp Corp 通信装置、通信システム、制御方法、制御プログラムおよび記録媒体
US20110014873A1 (en) * 2009-07-17 2011-01-20 Kabushiki Kaisha Toshiba Wireless communication terminal and sound volume control method
JP2013251613A (ja) * 2012-05-30 2013-12-12 Denso Corp 通信システム及び出力装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010273017A (ja) * 2009-05-20 2010-12-02 Sharp Corp 通信装置、通信システム、制御方法、制御プログラムおよび記録媒体
US20110014873A1 (en) * 2009-07-17 2011-01-20 Kabushiki Kaisha Toshiba Wireless communication terminal and sound volume control method
JP2013251613A (ja) * 2012-05-30 2013-12-12 Denso Corp 通信システム及び出力装置

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