KR101851144B1 - Sound receiving apparatus, vehicle having the same and method for controlling the same - Google Patents

Sound receiving apparatus, vehicle having the same and method for controlling the same Download PDF

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Publication number
KR101851144B1
KR101851144B1 KR1020160021590A KR20160021590A KR101851144B1 KR 101851144 B1 KR101851144 B1 KR 101851144B1 KR 1020160021590 A KR1020160021590 A KR 1020160021590A KR 20160021590 A KR20160021590 A KR 20160021590A KR 101851144 B1 KR101851144 B1 KR 101851144B1
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KR
South Korea
Prior art keywords
sound
passenger
unit
seat
microphones
Prior art date
Application number
KR1020160021590A
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Korean (ko)
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KR20170099485A (en
Inventor
차연주
Original Assignee
현대자동차주식회사
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Priority to KR1020160021590A priority Critical patent/KR101851144B1/en
Publication of KR20170099485A publication Critical patent/KR20170099485A/en
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Publication of KR101851144B1 publication Critical patent/KR101851144B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/037—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for occupant comfort, e.g. for automatic adjustment of appliances according to personal settings, e.g. seats, mirrors, steering wheel
    • B60R16/0373—Voice control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/002—Seats provided with an occupancy detection means mounted therein or thereon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
    • B60R1/02—Rear-view mirror arrangements
    • B60R1/04—Rear-view mirror arrangements mounted inside vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/02—Internal Trim mouldings ; Internal Ledges; Wall liners for passenger compartments; Roof liners
    • B60R13/0212—Roof or head liners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/015—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting the presence or position of passengers, passenger seats or child seats, and the related safety parameters therefor, e.g. speed or timing of airbag inflation in relation to occupant position or seat belt use
    • B60R21/01512—Passenger detection systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/015—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting the presence or position of passengers, passenger seats or child seats, and the related safety parameters therefor, e.g. speed or timing of airbag inflation in relation to occupant position or seat belt use
    • B60R21/01512—Passenger detection systems
    • B60R21/01516—Passenger detection systems using force or pressure sensing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/015—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting the presence or position of passengers, passenger seats or child seats, and the related safety parameters therefor, e.g. speed or timing of airbag inflation in relation to occupant position or seat belt use
    • B60R21/01512—Passenger detection systems
    • B60R21/01544—Passenger detection systems detecting seat belt parameters, e.g. length, tension or height-adjustment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/222—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only  for microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/13—Acoustic transducers and sound field adaptation in vehicles

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)

Abstract

The sound receiving apparatus of the present invention includes a guide unit; A sliding portion movably arranged on the guide portion; A sound collecting part provided at the sliding part and collecting sound around the sound collecting part; A driving unit for moving the sliding unit; And a control unit for receiving user presence information of the remaining positions except for the reference position and transmitting a control signal to the driving unit such that the sliding unit is moved to a reference position or a predetermined position based on the received user presence information .
The present invention can improve the voice recognition rate by recognizing the voice using the sound collected by the sound collecting unit after changing the position of the sound collecting unit based on the occupant's boarding information.
As the speech recognition rate is improved, it is possible to improve the accuracy of operation control of the external device through speech recognition.

Description

TECHNICAL FIELD [0001] The present invention relates to a sound receiving apparatus, a vehicle having the sound receiving apparatus,

The present invention relates to a sound receiving apparatus for improving the voice recognition rate, a vehicle having the same, and a control method thereof.

It is time to use digital devices to make phone calls, record external voices, or acquire video.

In a variety of digital devices such as consumer electronics (CE) devices, cellular phones, and digital camcorders, and in-vehicle voice recognition devices, microphones are used as means for acquiring sounds such as sounds.

In such an environment in which a sound source is recorded or a voice signal is input through such a digital device, an environment in which various noises and surrounding interference sounds are included rather than a quiet environment without surrounding interference is often used.

In such an environment, it is necessary to use a directivity microphone (Uni-directional Mic.) Or keep the distance between the microphone and the speaker close to obtain the speaker's voice.

At this time, when the distance between the microphone and the speaker is increased, there is a high possibility that not only the voice of the surrounding speaker but also the surrounding noise or the reverberation enters the microphone, thereby having a low signal-to-noise ratio (SNR).

Particularly, in the case of a vehicle, microphones are fixedly arranged in the center of the vehicle interior, so that it is not possible to selectively pick up the voice of the driver or the passenger. In addition, And there is also a problem that voice recognition rate is lowered due to noise around the road or noise signals from the vehicle inside the vehicle when voice recognition is performed.

One aspect provides a sound receiving apparatus for changing the position of a sound collecting unit based on occupant's boarding information, a vehicle having the same, and a control method thereof.

Another aspect provides a sound receiving apparatus for determining a firing position using at least two sound collecting units and correcting a position of a sound collecting unit based on the determined position information, a vehicle having the same, and a control method thereof.

A sound receiving apparatus according to one aspect includes: a guide portion; A sliding portion movably arranged on the guide portion; A sound collecting part provided at the sliding part and collecting sound around the sound collecting part; A driving unit for moving the sliding unit; And a control unit for receiving user presence information of the remaining positions except for the reference position and transmitting a control signal to the driving unit such that the sliding unit is moved to a reference position or a predetermined position based on the received user presence information .

The sound collection unit of the sound reception apparatus according to one aspect includes one directional microphone.

The sound collection unit of the sound reception apparatus according to one aspect includes at least two microphones.

The control unit of the sound receiving apparatus according to one aspect includes controlling the sliding unit to move to a preset position when the user is present in the remaining position and controlling the sliding unit to move to the reference position when the user does not exist in the remaining position.

The user presence information of the sound receiving apparatus according to one aspect includes at least one of the selection information of the user input through the input unit and the detection information of the user detected through the detection unit.

A vehicle according to another aspect is a headlining; A detecting unit detecting whether or not the vehicle is boarding; And a sound receiving device that has a sound collecting portion movably provided in the head lining and controls the movement of the sound collecting portion based on information about whether or not it is detected.

The detection portion of the vehicle according to the other aspect includes a belt engagement detection portion for detecting whether or not the seat belt is secured to the passenger seat.

The detecting portion of the vehicle according to another aspect includes a weight detecting portion for detecting whether or not the passenger seat is seated.

The vehicle according to another aspect further includes an input section, and the sound receiving apparatus includes controlling the sound collecting section to be moved to the position of the front passenger seat when the input section is operated.

According to another aspect of the present invention, there is provided a sound receiving apparatus for a vehicle, comprising: a guide portion provided in a head lining; A sliding portion movably disposed in the guide portion and to which the sound collecting portion is mounted; A driving unit for moving the sliding unit; And a control unit for transmitting a control signal to the driving unit to move the sliding unit.

The headlining further includes a room mirror, and the guide portion and the sliding portion may be provided in the room mirror.

The controller of the vehicle sound receiving apparatus according to another aspect sets the position of the driver's seat as a reference position, sets the position of the passenger seat as a remaining position, and controls the sound collecting unit to move to a predetermined position when the passenger's boarding information is received And controlling the sound collecting unit to move to the reference position when the boarding information of the passenger seat is not received.

The predetermined position of the sound receiving apparatus of the vehicle according to the other aspect includes the position between the position of the driver's seat and the position of the front passenger's seat.

The sound collecting portion of the sound receiving device of the vehicle according to another aspect includes at least two microphones fixedly mounted on the sliding portion.

The sound collecting portion of the sound receiving device of the vehicle according to another aspect includes one microphone having a directivity.

The sound receiving apparatus of the vehicle according to another aspect includes predicting a sounding position of the sound based on the sound signal collected by the sound collecting unit and correcting the position of the sound collecting unit based on the predicted sounding position.

The sound receiving apparatus of the vehicle according to the other aspect further includes an overhead console mounted on the head lining and in which the sound receiving apparatus is disposed.

A vehicle according to another aspect includes a headlining; An input unit for inputting boarding information of the passenger seat; A sound collecting unit movably provided in the headlining, and a sound receiving device for controlling the movement of the sound collecting unit based on information about whether or not the vehicle is entered.

According to another aspect of the present invention, there is provided a sound receiving apparatus for a vehicle, the sound collecting unit controlling the sound collecting unit to be moved to a preset position when the passenger's boarding information is inputted, and controlling the sound collecting unit to be moved to the driver's seat when the passenger's seat information is not inputted .

According to another aspect of the present invention, there is provided a sound receiving apparatus for a vehicle, which controls the sound collecting unit to be moved to the position of the passenger seat when the passenger information of the passenger seat is inputted and controls the sound collecting unit to move to the position of the driver's seat when the passenger- .

According to another aspect of the present invention, there is provided a method of controlling a vehicle, the method comprising: detecting whether or not the passenger seat is occupied; determining whether a passenger is present in the passenger seat based on the detected passenger information; If the occupant does not exist, the sound collecting unit is moved to the position of the driver's seat, and voice recognition is performed based on the sound signal received by the sound collecting unit.

The control method of the vehicle further includes predicting the utterance position of the sound based on the sound signal collected in the sound collector and correcting the position of the sound collector based on the predicted utterance position.

Detecting whether or not the passenger seat is occupied includes detecting whether or not the seatbelt provided on the passenger seat is tightened.

The predetermined position is a position between the front passenger's seat and the driver's seat.

The control method of the vehicle further includes controlling the sound collecting unit to be moved to the position of the passenger seat when the input unit is operated.

The present invention can improve the voice recognition rate by recognizing the voice using the sound collected by the sound collecting unit after changing the position of the sound collecting unit based on the occupant's boarding information.

As the speech recognition rate is improved, it is possible to improve the accuracy of operation control of the external device through speech recognition.

Accordingly, it is possible to improve the quality of the device in the vehicle where the operation is controlled through voice recognition, to further improve the user's satisfaction, and to improve the convenience of the user and the safety of the vehicle.

1 is an exemplary view of a vehicle provided with a sound receiving apparatus according to an embodiment.
2 is an internal view of a vehicle provided with a sound receiving apparatus according to an embodiment.
3 is an exemplary view of a sound receiving apparatus according to an embodiment.
4 is an exploded perspective view of the sound receiving apparatus shown in Fig.
5 is a control configuration diagram of a vehicle provided with a sound receiving apparatus according to an embodiment.
6 is a control flowchart of a vehicle provided with a sound receiving apparatus according to an embodiment.
7 is a control configuration diagram of a vehicle provided with a sound receiving apparatus according to another embodiment.
8 is a control flowchart of a vehicle provided with a sound receiving apparatus according to yet another embodiment.
9 is an exemplary view of a vehicle provided with a sound receiving apparatus according to another embodiment.
10 is a detailed diagram of the sound receiving apparatus shown in FIG.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 is an exemplary view of a vehicle provided with a sound receiving apparatus according to an embodiment. Fig. 2 is an internal view of a vehicle provided with a sound receiving apparatus according to an embodiment.

The vehicle 1 is a device that drives a wheel for the purpose of transporting a person or a cargo, and moves on the road.

The vehicle 1 includes a body having a built-in and an exterior, and a chassis provided with a mechanical device necessary for traveling to a remaining portion excluding the vehicle body.

1, the exterior 110 of the vehicle body includes a front panel 111, a bonnet 112, a roof panel 113, a rear panel 114, a trunk 115, front and rear right and left doors 116, And a window glass 117 provided on the left and right doors 116 so as to be openable and closable.

The exterior of the vehicle body includes a filler 118 provided at the boundary between the front panel, the bonnet, the roof panel, the rear panel, the trunk, the window glass of the front and rear doors, and the side mirror 119).

2, the interior body 120 of the vehicle body includes a seat 121 on which an occupant sits, a dashboard 122, and a tachometer 120. The tachometer 120 includes a tachometer, a speedometer, a coolant thermometer, a fuel meter, (I.e., a cluster 123) in which a door open warning lamp, an engine oil warning lamp, a fuel oil warning lamp, and a fuel low warning lamp are disposed, and a headlining An overhead console 124 provided with an on / off button for an interior light and an interior light, a door opening / closing button, and a center fascia 125 having a tentacle of the air conditioner and a control panel.

The seat 121 includes a driver's seat 121a on which the driver sits, a passenger seat 121b on which the passenger sits, and a rear seat located in the rear of the vehicle.

The seat 121 may be provided with a seat belt installed to protect the occupant from an impact occurring during driving.

The vehicle may further include a detection unit 140 for detecting whether the driver or passenger is boarding the vehicle.

The vehicle may include a belt engagement detection unit for detecting whether or not the seat belt is fastened, a weight detection unit provided on the seat for detecting whether or not the occupant is seated, and a pressure detection unit.

The center fascia 125 may be provided with a head unit 126 for controlling an audio device, an air conditioner, and a heater, and a blower, a cigar jack, and a multi terminal 127.

The multi terminal 127 may be disposed at a position adjacent to the head unit 126, and may include a USB port and an AUX terminal, and may further include an SD slot.

The vehicle 1 may further include an input unit 128 for receiving operation commands of various functions.

The input unit 128 may be provided on the head unit 126 and the center pacea 125 and may include at least one physical button such as an operation on-off button of various functions, a button for changing setting values of various functions do.

The input unit 128 can be selected in the voice recognition mode.

The input unit 128 can transmit an operation signal of the button to the electronic control unit (ECU), the head unit 126, or the vehicle terminal.

The input unit 128 may further include a jog dial (not shown) or a touch pad for inputting a movement command and a selection command of the cursor displayed on the display unit of the vehicle terminal.

The input unit 128 can transmit an operation signal of the jog dial or a touch signal touched to the touch pad to the control unit in the electronic control unit (ECU), the head unit 126, or the vehicle terminal.

The vehicle 1 may further include a display unit 129 for displaying information on a function being performed and information input by a user.

For example, the display unit 129 can display performance information of the voice recognition mode in the voice recognition mode.

It is also possible for the vehicle 1 to display the information on the function being performed and the information inputted by the user on the terminal.

Such a vehicle terminal may also be installed on a dashboard.

The vehicle terminal can perform an audio function, a video function, a navigation function, a DMB function, and a radio function, and it is also possible to display an image in the longitudinal and lateral directions in the autonomous running mode.

In addition, an electronic device such as a hands-free device, a GPS receiver, an audio device, a Bluetooth device, a rear camera, a charging device for a user terminal, and a high pass device can be installed inside the vehicle 1 for the convenience of the driver.

The vehicle 1 may further include a start button for inputting an operation command to the start motor (not shown).

As shown in FIG. 2, the vehicle includes a steering wheel 130, a brake pedal 131 for controlling the braking of the vehicle, a brake pedal 131 for controlling the acceleration of the vehicle, A shift lever 133 operated by a user in one of parking (P), forward travel (D), reverse travel (R) and neutral (N) to adjust the operation of the gear box, .

Here, the gearbox is a device that changes the ratio between the rotational speed of the engine and the forward gear wheel speed or changes the rotation of the reverse gear.

The steering wheel 130 is a device for adjusting the running direction of the vehicle 1. The steering wheel 130 is connected to the rim held by the user (i.e., driver) and the steering unit of the vehicle 1, Lt; RTI ID = 0.0 > spokes < / RTI >

In addition, the spoke may be provided with an input unit (not shown) for controlling various devices in the vehicle 1, for example, an audio device, a Bluetooth device, and the like.

The vehicle frame includes a power generating portion, a power transmitting portion, a steering portion, a braking portion, a suspension portion, a transmission portion, a fuel portion, and front and rear left and right wheels rotating or stopping by a driving force and a braking force generated by the power generating portion.

The vehicle 1 is provided with a wheel speed detecting portion for detecting the speed of the front and rear left and right wheels, an acceleration detecting portion for detecting the acceleration of the vehicle, a steering angle detecting portion for detecting the steering angle of the vehicle, Or the like may be provided.

Examples of the stabilizing device of the vehicle include an airbag control device for the purpose of safety of a passenger such as a driver in the event of a vehicle collision, and a vehicle stability control device (ESC: Electronic Stability Control) There are safety devices.

The vehicle includes various devices for driving and braking, various safety devices, and an electronic control unit (ECU) for controlling the driving of various detection parts.

The vehicle 1 may further include a communication unit for communicating with various internal electronic devices and a user terminal and a server which are external terminals.

The communication unit may include a CAN communication module, a Wi-Fi communication module, a USB communication module, and a Bluetooth communication module.

The communication unit may further include a GPS receiving module for acquiring position information from the satellite, and may further include a broadcasting communication module such as TPEG, SXM, and RDS such as DMB.

The vehicle may be provided with a voice recognition device 150 for voice control of the operation of the load 160 such as an audio device, an air conditioner, a car terminal, a hot wire, a communication part, a door, a lamp,

The speech recognition apparatus 150 may include a sound receiving apparatus 200 that is electrically connected to a sound receiving apparatus 200 that collects a user's voice to receive sound signals collected from the sound receiving apparatus 200, To receive the sound signal collected from the sound receiving apparatus 200. The sound receiving apparatus 200 may receive the sound signal.

The speech recognition apparatus 150 performs speech recognition by signal processing the sound signal received from the sound reception apparatus 200 and directly controls the operation of the load 160 based on the recognized speech information, To the ECU (not shown) that controls the operation of the speaker.

The sound receiving apparatus 200 may include a microphone that is provided in the vehicle and is a sound collecting unit that is movably disposed.

As shown in FIG. 2, the sound receiving apparatus 200 may be provided in front of the head lining 120a inside the vehicle interior, that is, around the windshield.

Also, the sound receiving apparatus 200 may be provided in the overhead console 124 or in a room mirror.

The configuration of such a sound receiving apparatus 200 will be described with reference to Figs. 3 and 4. Fig.

3 is an exemplary view of a sound receiving apparatus 200, and FIG. 4 is an exploded perspective view of the sound receiving apparatus shown in FIG.

3, the sound receiving apparatus 200 includes a guide unit 210 for movably mounting a microphone, which is a sound collecting unit 250, and guiding movement of the microphone, A sliding portion 220 having teeth formed to be reciprocally inserted into the inside of the sliding portion 210 and formed with teeth so as to engage with the teeth of the sliding portion 220 and to apply a linear movement force to the sliding portion 220 And a motor 240 for applying a rotational force to the pinion portion 230. The pinion portion 230 includes a pinion portion 230,

The guide part 210 and the sliding part 220 may be provided on the overhead console or the room mirror.

The motor 240 may change the direction of movement of the sliding part 220 moving in the guide part 210 by changing the rotation direction.

Further, the motor 240 can adjust the position of the sliding part 220 moving in the guide part 210 by adjusting the rotation speed.

Here, the number of microphones to be mounted on the sliding part 220 is one, but two are possible.

4, the guide unit 210 of the sound receiving apparatus 200 includes an inner space through which the sliding unit is moved, a slot for allowing the microphone 250 and the rack unit 213 to be exposed to the outside, (h1, h2).

The sliding portion 220 of the sound receiving apparatus 200 includes an insertion portion 211 which is movably inserted into a space inside the guide portion 210 and a hole h2 And a rack portion 213 formed on the exposed portion 212 and coupled with the teeth of the pinion portion 230 and having teeth.

The rack portion 213 changes the rotational motion provided by the motor 240 to linear motion so that the sliding portion 220 linearly moves reciprocally in the inner space of the guide portion 210.

In this embodiment, the pinion gear has been described as an example of the moving structure of the microphones, but it is also possible to use other types of gears.

5 is a control configuration diagram of a vehicle provided with a sound receiving apparatus according to an embodiment.

The vehicle includes a detecting unit 140, a voice recognizing unit 150, a load 160, and a sound receiving device 200. [

The detection unit 140 detects whether or not the occupant (or user, occupant) of the passenger seat is boarded.

The detection unit 140 may include a belt engagement detection unit that detects whether or not the seat belt is fastened.

The detection unit 140 may include a weight detection unit and a pressure detection unit that are provided on the seat of the passenger seat to detect whether or not the occupant is seated.

The detection unit 140 transmits a signal generated by the occupant of the passenger seat to the control unit 161.

The speech recognition apparatus 150 may include a sound receiving apparatus 200 that is electrically connected to a sound receiving apparatus 200 that collects a user's voice to receive sound signals collected from the sound receiving apparatus 200, To receive the sound signal collected from the sound receiving apparatus 200. The sound receiving apparatus 200 may receive the sound signal.

The speech recognition unit 150 performs speech recognition based on the sound signal provided by the sound reception apparatus 200 and directly controls the operation of the load 160 based on the recognized speech information, And transmits the recognized voice information to an ECU (not shown) that controls the operation.

The load 160 may include an audio device, an air conditioner, a car terminal, a hot wire, a communication unit, a door, a lamp, and the like, and performs an operation based on an operation signal transmitted from the voice recognition unit or the ECU.

In other words, the load 160 can be controlled in operation by voice.

The speech recognition control of the vehicle terminal may include controlling functions such as telephone conversation, navigation, broadcasting, radio, music reproduction, and the like.

It is also possible to select an automatic running or the like by using voice recognition or the like.

The sound receiving apparatus 200 is provided in the vehicle, collects sound inside the vehicle, processes the collected sound, and transmits the signal to the voice recognizing unit 150. [

The sound receiving apparatus 200 includes a motor 240, a sound collecting unit 250, a control unit 261, a storage unit 262, and a driving unit 263.

The motor 240 is an actuator that receives an electric force and generates rotational force, and is connected to the pinion portion to rotate the pinion.

The sound collecting unit 250 includes one microphone or two or more microphones.

Here, one microphone may be directional.

And two or more microphones may be implemented in a microphone array.

Two or more microphones may be fixedly mounted at regular intervals in the sliding portion.

The control unit 261 controls the rotation of the motor 240 so that the sound collecting unit 250 is moved to a predetermined position when the boarding information is received and the sound collecting unit moves to the reference position when the boarding information of the passenger seat is not received. And controls the rotation.

The reference position may be a position adjacent to the position of the driver's seat, and the remaining position may be a position adjacent to the position of the passenger seat or a position adjacent to the position of the rear seat.

More specifically, the control unit 261 determines that a passenger is present in the passenger seat when a signal for fastening the seatbelt of the passenger seat or a weight detection signal for the passenger seat is received and determines that the passenger's seat belt fastening signal or the weight detection signal of the passenger seat is not received It is judged that there is no occupant in the passenger seat.

If it is determined that a passenger is present in the passenger seat, the control unit 261 controls the movement of the sound collecting unit to a position between the passenger seat and the driver's seat so as to collect both the passengers of the driver's seat and the passenger of the passenger's seat, The controller controls the movement of the sound collecting unit to the position of the driver's seat so as to collect the sound of the occupant of the driver's seat.

If the current position of the sound collecting unit is not the reference position, the control unit 261 controls the motor to rotate in the first direction. If the current position of the sound collecting unit is the reference position The position of the sound collecting unit is maintained.

If the current position of the sound collecting unit is not the predetermined position, the control unit 261 controls the motor to rotate in the second direction, and if the current position of the sound collecting unit is And maintains the position of the sound collecting portion if it is a preset position.

In addition, the reference position and the predetermined position may be positions at both ends of the guide portion at different positions.

The control unit 261 transmits the control signal of the motor to the driving unit so that the motor can rotate.

At this time, the pinion portion rotates in conjunction with the rotation of the motor, the rotational force of the pinion portion is transmitted to the rack portion to move the rack portion, and the sound collecting portion is moved by the movement of the rack portion.

The control unit 261 transmits the sound signal collected in the sound collecting unit to the voice recognizing unit 150 when the movement of the sound collecting unit is completed. At this time, the control unit 261 may process the collected sound signal and transmit the processed sound signal to the voice recognition unit 150.

The control unit 261 can predict the ignition position using a beam forming algorithm for forming a beam in a specific direction and compare the predicted ignition position with the position of the current sound collection unit to correct the position of the sound collection unit.

Here, the beamforming algorithm is an algorithm for predicting a sounding direction of a sound by using a time difference of a signal arriving at at least two microphones and a distance between microphones.

The beamforming algorithm can enhance only the sound signal at the predicted firing position or remove the sound at the remaining positions with interference noise.

In this way, the control unit can improve the performance of the sound separation or the ignition position recognition that eliminates or separates the noise source by performing the beam forming, Or reduce reverberation.

When the input signal is received through the input unit 128, the control unit 261 determines whether the information of the received input signal is the selection information of the passenger. If the selection information of the passenger is the information of the passenger, It is also possible to move the position of the sound collecting part to the position of the front passenger's seat.

If the input signal is the driver's selection information through the input unit 128, the control unit 261 performs a recognition mode for recognizing only the driver's voice even if a passenger is present in the passenger seat. At this time, It is also possible to move it.

The storage unit 262 may store information about a reference position and a predetermined position, and may further store information about a reference position, a rotation direction corresponding to a predetermined position, and information on the number of rotations.

Here, the reference position is a position adjacent to the position of the driver's seat, and the predetermined position is a position adjacent to the central position between the driver's seat and the passenger's seat.

The storage 262 may store information about the distance between two or more microphones for beamforming.

The driving unit 263 transmits a driving signal to the motor 240 based on the control signal transmitted from the control unit 260. [

The driving unit 263 can transmit a signal corresponding to the rotation direction in the first direction or the second direction and a signal corresponding to the rotation number to the motor 240. [

6 is a control flowchart of a vehicle provided with a sound receiving apparatus according to an embodiment.

When the voice recognition mode is selected in the input unit 128, the vehicle is detected (301) whether or not the passenger seat is occupied by using the detection unit, and it is determined (302) whether or not the occupant is boarded on the basis of the detected signal.

The determination of whether or not the passenger seat is carried is to determine that a passenger is present in the passenger seat when a signal for fastening the seat belt of the passenger seat or a weight detection signal for the passenger seat is received and judges that a passenger's seat belt fastening signal or a weight detection signal of the passenger seat is not received And judging that there is no occupant in the passenger seat.

When it is determined that the passenger has boarded the passenger seat, the vehicle moves (303) the sound collection unit to a predetermined position (i.e., a position between the passenger seat and the driver's seat) to collect both the passengers of the driver's seat and the passenger of the passenger's seat.

Here, moving the sound collecting part includes simultaneously moving at least two microphones fixedly arranged at a predetermined distance to the sliding part.

In addition, if the position of the sound collecting unit is a predetermined position, the position of the sound collecting unit is maintained and the sound collecting operation of the sound collecting unit is activated.

If it is determined that the passenger is not boarding the passenger seat, the vehicle moves (304) the sound collecting unit to the reference position adjacent to the position of the driver's seat to collect the passenger's voice.

Also in this case, if the position of the sound collecting unit is the reference position, the position of the sound collecting unit is maintained and the sound collecting operation of the sound collecting unit is activated.

The vehicle collects (305) the sound through the sound collector and performs (306) speech recognition using the collected sound signal.

Wherein collecting sound through the sound collector includes collecting sound through at least two microphones mounted and spaced a fixed distance apart.

Collecting the sound through the sound collector also includes collecting the sound through a single directional microphone.

The vehicle receives the test sound through the sound collecting unit before speech recognition, predicts the ignition position of the received test sound, compares the predicted ignition position with the position of the current sound collecting unit, It is also possible to correct the position of the sound collecting portion to the firing position.

The present invention can improve the voice recognition rate by recognizing the voice using the sound collected by the sound collecting unit after changing the position of the sound collecting unit based on the occupant's boarding information.

As the speech recognition rate is improved, it is possible to improve the accuracy of operation control of the external device through speech recognition.

7 is a control configuration diagram of a vehicle provided with a sound receiving apparatus according to another embodiment.

The vehicle includes an input unit 128, a voice recognition unit 150, a load 160, and a sound receiving device 200.

The input unit 128 receives the voice recognition mode and receives the boarding information of the passenger seat.

The speech recognition apparatus 150 may include a sound receiving apparatus 200 that is electrically connected to a sound receiving apparatus 200 that collects a user's voice to receive sound signals collected from the sound receiving apparatus 200, To receive the sound signal collected from the sound receiving apparatus 200. The sound receiving apparatus 200 may receive the sound signal.

The speech recognition unit 150 performs speech recognition based on the sound signal provided by the sound reception apparatus 200 and directly controls the operation of the load 160 based on the recognized speech information, And transmits the recognized voice information to an ECU (not shown) that controls the operation.

The load 160 may include an audio device, an air conditioner, a car terminal, a hot wire, a communication unit, a door, a lamp, and the like, and performs an operation based on an operation signal transmitted from the voice recognition unit or the ECU.

In other words, the load 160 can be controlled in operation by voice.

The speech recognition control of the vehicle terminal may include controlling functions such as telephone conversation, navigation, broadcasting, radio, music reproduction, and the like.

It is also possible to select an automatic running or the like by using voice recognition or the like.

The sound receiving apparatus 200 is provided in the vehicle, collects sound inside the vehicle, processes the collected sound, and transmits the signal to the voice recognizing unit 150. [

The sound receiving apparatus 200 includes a motor 240, a sound collecting unit 250, a control unit 264, a storage unit 265, and a driving unit 263.

The configuration of the motor 240 and the sound collecting unit 250 is the same as that of the embodiment, and the description thereof is omitted.

The control unit 264 determines whether the received input signal is a signal for boarding pass information of the passenger seat when the input signal is inputted to the input unit, 240, and controls the rotation of the motor so that the sound collecting unit is moved to the reference position when the signal is not the boarding information of the passenger seat, that is, the boarding information of the passenger seat is not received.

The reference position may be a position adjacent to the position of the driver's seat, and the remaining position may be a position adjacent to the position of the passenger seat or a position adjacent to the position of the rear seat.

The control unit 264 controls the movement of the sound collecting unit to the position between the passenger seat and the driver's seat so as to collect both the passengers of the driver's seat and the passengers of the passenger's seat when the passenger is found to be present in the passenger seat, The controller controls the movement of the sound collecting unit to the position of the driver's seat so as to collect the sound of the occupant of the driver's seat.

If the current position of the sound collecting unit is not the reference position, the control unit 264 controls the motor to rotate in the first direction. If the current position of the sound collecting unit is the reference position The position of the sound collecting unit is maintained.

The control unit 264 controls the motor to rotate in the second direction if the current position of the sound collecting unit is not the predetermined position and controls the motor to rotate in the second direction when the current position of the sound collecting unit is And maintains the position of the sound collecting portion if it is a preset position.

The control unit 264 transmits the control signal of the motor to the driving unit so that the motor can rotate.

At this time, the pinion portion rotates in conjunction with the rotation of the motor, the rotational force of the pinion portion is transmitted to the rack portion to move the rack portion, and the sound collecting portion is moved by the movement of the rack portion.

The control unit 264 transmits the sound signal collected by the sound collecting unit to the voice recognizing unit 150 when the movement of the sound collecting unit is completed. At this time, the control unit 261 may process the collected sound signal and transmit the processed sound signal to the voice recognition unit 150.

The control unit 264 may predict the ignition position using a beam forming algorithm for forming a beam in a specific direction and compare the predicted ignition position with the position of the current sound collection unit to correct the position of the sound collection unit.

Here, the beamforming algorithm is an algorithm for predicting a sounding direction of a sound using a time difference of a signal arriving at at least two microphones and a distance between microphones. The detailed description of the beamforming algorithm is the same as in the first embodiment .

The storage unit 265 and the driving unit 263 are the same as those of the storage unit and the driving unit of the embodiment, and the description thereof will be omitted.

A vehicle provided with a sound receiving apparatus according to another embodiment will be described with reference to FIG.

The vehicle includes an input unit 128, a voice recognition unit 150, a load 160, and a sound receiving device 200.

The input unit 128 may receive a voice recognition mode and receive user selection information for voice recognition.

Here, the user's information may include the occupant (i.e., driver) selection information of the driver's seat, the passenger selection information of the passenger seat (i.e., passenger), and the selection information of the driver and the passenger.

When the input signal is received through the input unit 128, the control unit 264 determines whether the information of the received input signal is the selection information of the passenger. If the selection information of the passenger is the selection information, the control unit 264 performs a recognition mode for recognizing only the passenger's voice. The motor is controlled so that the sound collection part is moved to the position of the passenger seat.

The control unit 264 performs a recognition mode for recognizing only the driver's voice even if a passenger exists even if the input signal is the driver's selection information through the input unit 128. At this time, .

The control unit 264 performs a recognition mode for recognizing the voice of both the passenger and the driver through the input unit 128 when the input signal is the driver and passenger selection information, The motor is controlled to be moved.

The storage unit 265 stores information on the position of the driver's seat, the position of the passenger seat, and the central position, and further stores information on the rotational direction of the motor for moving between the positions and information on the number of rotations.

The storage unit 265 may store information on the distance between two or more microphones for beamforming.

The driving unit 263 transmits a driving signal to the motor 240 based on the control signal transmitted from the control unit 260. [

The driving unit 263 can transmit a signal corresponding to the rotation direction in the first direction or the second direction and a signal corresponding to the rotation number to the motor 240. [

8 is a control flowchart of a vehicle provided with a sound receiving apparatus according to yet another embodiment.

When the voice recognition mode is selected in the input unit 128, the input information input to the input unit is confirmed (311). If the confirmed input information is determined to be driver selection information (312), the vehicle is moved to a position adjacent to the driver seat (313).

The vehicle moves (315) the sound collector to a position adjacent to the position of the passenger seat when the confirmed input information is determined to be passenger selection information (314).

The vehicle moves (317) the sound collection unit to a position adjacent to the central position between the driver's seat and the passenger's seat when it is determined that the confirmed input information is simultaneous selection information that simultaneously selects the driver and the passenger.

Here, moving the sound collecting part includes simultaneously moving at least two microphones fixedly arranged at a predetermined distance to the sliding part.

In addition, if the position at which the sound collector should move is the same as the current position, the position of the sound collector is maintained and the sound collection operation of the sound collector is activated.

The vehicle collects (318) the sound through the sound collector and performs (319) speech recognition using the collected sound signal.

Wherein collecting sound through the sound collector includes collecting sound through at least two microphones mounted and spaced a fixed distance apart.

Collecting the sound through the sound collector also includes collecting the sound through a single directional microphone.

The vehicle receives the test sound through the sound collecting unit before speech recognition, predicts the ignition position of the received test sound, compares the predicted ignition position with the position of the current sound collecting unit, It is also possible to correct the position of the sound collecting portion to the firing position.

Although the sound collecting unit is moved between the driver's seat and the front passenger's seat in the embodiment of FIG. 5, the sound collecting unit is moved to the rear seat on the basis of whether or not the rear seat is occupied It is also possible to do.

FIG. 9 is an exemplary view of a vehicle provided with a sound receiving apparatus according to another embodiment, and FIG. 10 is a detailed view of the sound receiving apparatus shown in FIG.

As shown in FIG. 9, the sound receiving apparatus 200a may be disposed in the head lining 120a or the overhead console 124. In FIG.

The sound collecting unit 250 of the sound receiving apparatus 200a may be disposed at the center between the driver's seat and the front passenger seat and may include a directional microphone.

The sound collecting unit 250 of the sound receiving apparatus can adjust the sound collecting direction to the center of the driver's seat and the passenger's seat, the driver's seat side, and the passenger's seat side.

That is, the sound collecting unit of the sound receiving apparatus can be adjusted by the pan control.

10, the sound receiving apparatus 200a includes a sound collecting unit 250, a fan driving unit 270, and a control unit 266. [

The sound collecting unit 250 includes a directional microphone and collects sound and outputs a signal for the collected sound.

The fan driving unit 270 changes the angle of the microphone 250 based on the control signal transmitted from the control unit 266.

The control unit 266 adjusts the sound collection direction of the microphones based on whether or not the passenger seat detected by the detection unit is occupied and the boarding information input to the input unit.

More specifically, the control unit 266 determines that a passenger is present in the passenger seat when the seat belt fastening signal of the passenger seat or the weight detection signal of the passenger seat is received. If the fastening signal of the passenger seat or the weight detection signal of the passenger seat is not received It is judged that there is no occupant in the passenger seat.

The control unit 266 controls the angle of the sound collecting unit so as to face the central position between the passenger seat and the driver's seat so as to collect both the passengers of the driver's seat and the passengers of the passenger's seat when the passenger is judged to be present, The controller controls the angle of the sound collecting unit so as to face the position A of the driver's seat so as to collect the sound of the passenger of the driver's seat.

The control unit 266 can control the angle of the sound collecting unit so as to face the position B of the passenger seat so as to collect only the passenger's passenger's voice when the operation signal is inputted to the input unit.

And a case of receiving user selection information by using an input unit will be described.

When the input signal is received through the input unit, the control unit 266 determines whether the information of the received input signal is passenger selection information. If it is the passenger seat selection information, the control unit 266 performs a recognition mode for recognizing only the passenger's voice. Control the angle of the sound collector to face the position of the passenger seat.

If the input signal is the driver selection information through the input unit, the controller 266 performs a recognition mode for recognizing only the driver's voice even if a passenger is present in the passenger seat, and controls the angle of the sound collector to face the driver's seat .

The control unit 266 performs a recognition mode for simultaneously recognizing the passenger's voice and the driver's voice when the information of the received input signal is simultaneous selection information of the passenger and the driver. At this time, the position of the sound collecting unit is shifted toward the center position of the driver's seat and the passenger's seat To control the angle of the sound collecting part.

The sound receiving apparatus according to another embodiment of the present invention may include a plurality of microphones.

The sound receiving apparatus may include three microphones arranged at regular intervals.

The first of the three microphones is located in the vicinity of the driver's seat, the second microphone is located in the center between the driver's seat and the passenger's seat, and the third microphone is located in the vicinity of the passenger's seat.

The sound receiving apparatus collects voice using three microphones, and performs beamforming of the collected voice signal to confirm the uttered voice position.

The sound receiving apparatus can activate only the microphones provided at the positions corresponding to the uttered positions where the voice is uttered among the three microphones and perform voice recognition through the collected voice using the activated microphones.

For example, if it is determined that a voice has been uttered in the driver's seat, the sound receiver collects voice by activating only the first microphone, and activates only the third microphone when the voice in the passenger seat is determined to have been uttered .

In addition, if it is determined that the sound is generated in the driver's seat and the front passenger's seat, the sound receiving apparatus can activate the second microphone to collect sounds for the sound.

1: vehicle 128: input unit
140: Detection unit 200, 200a: Sound receiving device
250: Sound collectors 261, 264 and 266:
262, 265: storage unit 263:

Claims (25)

Guide portion;
A sliding part movably arranged on the guide part;
A sound collecting part provided at the sliding part and having at least two microphones for collecting sound around the sound collecting part;
A driving unit for moving the sliding unit; And
Wherein the at least two microphones are located at the reference position when the user is absent and the at least two microphones are positioned at a predetermined position when the user is present, And a control unit for controlling the driving unit so as to allow the at least two microphones to perform speech recognition using the sounds collected from the at least two microphones. 2. The apparatus of claim 1, wherein the at least two microphones comprise:
A sound receiving apparatus comprising a directional microphone. delete delete The apparatus of claim 1,
And at least one of the selection information of the user input through the input unit and the detection information of the user detected through the detection unit. Head lining;
A detecting unit for detecting whether or not the passenger is boarding the vehicle;
And a sound collecting part having at least two microphones movably provided in the headlining, wherein the sound collecting part confirms information on whether or not the detected passenger is boarding, and when the passenger is present, To move the at least two microphones to a reference position corresponding to the driver's seat when the passenger is absent and to perform voice recognition using the sounds collected from the at least two microphones Included vehicles. 7. The apparatus according to claim 6,
And a belt fastening detecting portion for detecting whether or not the seat belt fastened to the seat in which the passenger sits is fastened. 7. The apparatus according to claim 6,
And a weight detecting unit provided in a seat in which the passenger seated and detecting whether the occupant is seated. The method according to claim 6,
Further comprising an input section,
Wherein the sound receiving apparatus includes control such that, when the input section is operated, the at least two microphones are moved to the predetermined position. 7. The sound receiving apparatus according to claim 6,
A guide portion provided in the head lining;
A sliding portion movably disposed on the guide portion and having the at least two microphones mounted thereon;
A driving unit for moving the sliding unit;
And a control unit for transmitting a control signal to the driving unit such that the sliding unit is moved. 11. The method of claim 10,
Further comprising a room mirror mounted to said headlining,
Wherein the guide portion and the sliding portion are located in the room mirror. 7. The method according to claim 6,
And to move the occupant to a position of a seat on which the passenger sits. 7. The method according to claim 6,
And a position between the driver's seat and the seat in which the passenger sits. 11. The method of claim 10, wherein the at least two microphones
And is fixedly mounted on the sliding portion. 7. The apparatus of claim 6, wherein at least one of the at least two microphones comprises:
Directional microphones. 7. The sound receiving apparatus according to claim 6,
Predicting a firing position of the sound based on the sound signal collected from the at least two microphones, and correcting the position of the sound collection unit based on the predicted firing position. The method according to claim 6,
Further comprising an overhead console mounted to the headlining and in which the sound receiving device is disposed. Head lining;
An input unit for inputting boarding information of a passenger of a passenger seat;
And at least two microphones movably provided in the headlining to determine whether the passenger is present based on the input information of the input unit, activate a microphone provided adjacent to the passenger seat when the passenger is present, The sound receiving device activating the microphone provided adjacent to the driver's seat. 19. The method of claim 18,
Further comprising an input section,
Wherein the sound receiving apparatus further comprises activating a microphone provided adjacent to a position between the passenger seat and the driver's seat where input information is received in the input section. 19. The sound receiving apparatus according to claim 18,
Further comprising determining an ignition position based on the sound collected in the at least two microphones and activating a microphone corresponding to the determined position. Detecting whether or not the occupant of the passenger seat is boarded,
Determines whether or not the passenger is present based on the detected boarding passenger's seat information,
If the passenger is present, move at least two microphones to a predetermined position,
If the passenger does not exist, moves the at least two microphones to the position of the driver's seat,
Predicting a firing position based on a time difference of the sound signal received by the at least two microphones and a distance between the at least two microphones, and correcting the position of the at least two microphones based on the predicted firing position and,
Wherein the speech recognition is performed based on the sound signal received by the at least two microphones. delete The method according to claim 21, wherein detecting whether or not the passenger seat is boarded comprises:
And detecting whether or not the seatbelt provided in the passenger seat is fastened. 22. The method of claim 21,
Wherein the vehicle is a position between the front passenger seat and the driver's seat. 22. The method of claim 21,
And controlling the at least two microphones to move to the position of the passenger seat when the input unit is operated.
KR1020160021590A 2016-02-24 2016-02-24 Sound receiving apparatus, vehicle having the same and method for controlling the same KR101851144B1 (en)

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JP2005184461A (en) * 2003-12-19 2005-07-07 Nissan Motor Co Ltd Apparatus and method of controlling microphone
JP2007168686A (en) 2005-12-26 2007-07-05 Kojima Press Co Ltd On-vehicle microphone device

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JP2002175096A (en) * 2000-12-06 2002-06-21 Denso Corp Microphone controller
JP2003252127A (en) * 2001-12-28 2003-09-10 Pioneer Electronic Corp Drive control device and drive control method
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