WO2014087605A1 - Dispositif d'effet audio 3d - Google Patents

Dispositif d'effet audio 3d Download PDF

Info

Publication number
WO2014087605A1
WO2014087605A1 PCT/JP2013/006958 JP2013006958W WO2014087605A1 WO 2014087605 A1 WO2014087605 A1 WO 2014087605A1 JP 2013006958 W JP2013006958 W JP 2013006958W WO 2014087605 A1 WO2014087605 A1 WO 2014087605A1
Authority
WO
WIPO (PCT)
Prior art keywords
sound
speaker
driver
seat
stereophonic
Prior art date
Application number
PCT/JP2013/006958
Other languages
English (en)
Japanese (ja)
Inventor
利明 中山
Original Assignee
株式会社デンソー
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 株式会社デンソー filed Critical 株式会社デンソー
Publication of WO2014087605A1 publication Critical patent/WO2014087605A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/002—Non-adaptive circuits, e.g. manually adjustable or static, for enhancing the sound image or the spatial distribution
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2217/00—Details of magnetostrictive, piezoelectric, or electrostrictive transducers covered by H04R15/00 or H04R17/00 but not provided for in any of their subgroups
    • H04R2217/03—Parametric transducers where sound is generated or captured by the acoustic demodulation of amplitude modulated ultrasonic waves
    • 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

Definitions

  • the present disclosure relates to a stereophonic sound device that provides stereophonic sound to “only a specific person” without wearing headphones, for example, a technology that provides sound information or the like to a driver (an example of a person sitting in a seat) who drives a car It is suitable for use in.
  • a “normal stereo device” is known as a stereophonic device that imparts stereophonic sound to a person.
  • the “ordinary stereo device” that is generally used is a technology that generates sound of an audible frequency from a dynamic speaker installed at a location distant from the left and right, and generates a three-dimensional sound for a person away from the left and right dynamic speakers.
  • the 3D sound is given to “neighbors”, and the 3D sound cannot be given to “only a specific person” in a point.
  • drivers who drive cars are prohibited from wearing headphones and cannot be applied to drivers.
  • “Sound information useful for driving (blinker operation sound, warning sound to notify the presence of pedestrians in the direction of travel of the vehicle, warning sound to notify the presence of the vehicle to be changed when changing lanes, vehicle lanes protruding It is desirable to provide a warning sound that informs the possibility of a car, a guidance sound for car navigation, etc.).
  • the blinker operating sound may be annoying, and there is a demand for making the blinker operating sound inaudible to sleeping passengers, for example, when driving a bus at midnight.
  • “Sound information useful for driving” includes “blinker operating sound”, “warning sound to notify the presence of pedestrians in the direction of travel”, and “warning to notify the presence of the vehicle to be changed when changing lanes”
  • “sound” a warning sound that informs the possibility of a vehicle lane protruding”
  • “car navigation guidance sound” a warning sound that informs the possibility of a vehicle lane protruding”.
  • the present disclosure has been made in view of the above-described problems, and an object of the present disclosure is to provide a stereophonic sound device that can impart stereophonic sound to “only a specific person (driver or the like)” without wearing headphones. It is in.
  • the stereophonic device of the present disclosure specifies “a specific person (a person who provides stereophonic sound)” as “a person sitting on a seat”.
  • the left and right ear positions can be specified. Accordingly, the reproduced sound can be accurately reproduced by the left and right ears of the “person sitting on the seat” by the left and right parametric speakers.
  • the right speaker and the left speaker are arranged above the person sitting on the seat. For this reason, it is possible to suppress “reproduced sound reproduced by the ears of the person sitting on the seat (reproduced sound with strong straightness by the parametric speaker)” “arriving directly at the neighbor or by reflection” 3D sound can be given to “only a person sitting in the seat”.
  • the stereophonic sound device of the present disclosure accurately reproduces the reproduced sound at the ear of the person sitting on the seat, and the reproduced sound does not reach the neighboring person.
  • a stereophonic sound can be given to “only a person (specific person)”.
  • Example 1 which is explanatory drawing of the speaker arrangement
  • Example 1 which is explanatory drawing of the sound image localization (virtual sound source) which a person recognizes by binaural reproduction.
  • It is a block diagram of a stereophonic apparatus (Example 1).
  • Example 1 which is explanatory drawing of "the arrangement
  • 10 is a graph showing the difference of “noise perceived sound pressure” with respect to “speaker elevation angle” (Example 1).
  • 10 is a graph showing a difference of “7.7 kHz audible sound pressure” with respect to “speaker elevation angle” (Example 1).
  • Example 1 which is a figure which shows the difference in the ultimate sound pressure in the time of monaural and the time of stereo (when a speaker is arrange
  • 10 is a graph showing the relationship between “driver arrival sound pressure and passenger seat arrival sound pressure” with respect to “left and right speaker spacing” (Example 1). It is a graph which shows the difference of "driver arrival sound pressure and passenger seat arrival sound pressure” in the time of monophonic and stereo (when a speaker is arrange
  • Example 10 is a graph showing a difference between “driver arrival sound pressure and passenger seat arrival sound pressure” in monaural time and stereo time (when speakers are arranged apart from each other) (Example 2); (Example 2) which is a graph which shows the difference in the audible sound pressure at the time of monophonic and stereo (when a speaker is arrange
  • Example 1 A first embodiment will be described with reference to FIGS. 1A to 7.
  • the present disclosure is applied to an operation support device.
  • the driving support device of this embodiment gives "sound information useful for driving (as a specific example, blinker operating sound)" to a driver 200 (an example of a person sitting on a seat) sitting on a driving seat 100 of an automobile.
  • the driver 200 is equipped with a stereophonic sound device that stereolocates the sound image.
  • the stereophonic sound device of this embodiment is to let “only the driver 200” hear “blinker operating sound”, (I) When blinking the right blinker, “localize the blinker operation sound in the right direction of the driver 200” (Ii) When blinking the left blinker, “the blinker operating sound is localized in the left direction of the driver 200”.
  • the blinker relay is provided so that the relay operating sound (winker operating sound) cannot be heard directly by the occupant (driver 200 or other occupants). More specifically, a winker relay is mounted at a position away from the passenger compartment, or the winker relay is covered with a sound insulating material or the like, so that the relay operating sound is not directly heard by the occupant. Alternatively, the vehicle does not have a winker relay.
  • a sound source unit for playback 1 equipped with a memory for storing two-channel “winker operating sound signal (sound source)” recorded in binaural; -The right channel audio signal (winker operating sound signal) generated by the playback sound source unit 1 is ultrasonically modulated and irradiated to the right ear of the driver 200, and directly applied to the right ear of the driver 200.
  • a parametric speaker 2 for the right ear that generates a reproduction sound (a blinker operating sound for the right channel);
  • the left channel audio signal (blinker operating sound signal) generated by the reproduction sound source unit 1 is ultrasonically modulated and irradiated with ultrasonic waves toward the left ear of the driver 200, and directly applied to the left ear of the driver 200.
  • a parametric speaker 3 for the left ear that generates a reproduction sound (a blinker operating sound for the left channel); It is configured with.
  • the playback sound source unit 1 (I) When the right winker is actuated, a “right turn signal operating sound signal (a binaural signal whose sound image is localized in the right direction of the driver 200)” is generated. (Ii) When the left winker is activated, a “left winker operating sound signal (a binaural signal whose sound image is localized in the left direction of the driver 200)” is generated.
  • Binaural recording is a two-channel recording technique that uses left and right microphones placed in the left and right pseudo-ears of a dummy head simulating a human head, and generally provides stereophonic sound to headphones wearers. It is known as a recording technique.
  • the binaural recording in this embodiment is a recording of a playback sound (blinker operation sound) given to the dummy head by a parametric speaker (not limited).
  • the parametric speaker 2 for the right ear is A right speaker R1 that generates ultrasonic waves toward the right ear of the driver 200; A right ultrasonic modulation unit R2 that modulates an audio signal for the right channel (a blinker operation sound signal) generated by the reproduction sound source unit 1 into an ultrasonic frequency; A right power amplifier R3 (for example, a class B amplifier or a class D amplifier) that drives the right speaker R1 by the modulation signal modulated by the right ultrasonic modulation unit R2, Is provided.
  • a right speaker R1 that generates ultrasonic waves toward the right ear of the driver 200
  • a right ultrasonic modulation unit R2 that modulates an audio signal for the right channel (a blinker operation sound signal) generated by the reproduction sound source unit 1 into an ultrasonic frequency
  • a right power amplifier R3 for example, a class B amplifier or a class D amplifier
  • the parametric speaker 3 for the left ear is A left speaker L1 that generates ultrasonic waves toward the left ear of the driver 200; A left ultrasonic modulation unit L2 that modulates an audio signal (winker operation sound signal) for the left channel generated by the reproduction sound source unit 1 into an ultrasonic frequency; A left power amplifier L3 (for example, a class B amplifier or a class D amplifier) that drives the left speaker L1 by the modulation signal modulated by the left ultrasonic modulation unit L2, Is provided.
  • a left speaker L1 that generates ultrasonic waves toward the left ear of the driver 200
  • a left ultrasonic modulation unit L2 that modulates an audio signal (winker operation sound signal) for the left channel generated by the reproduction sound source unit 1 into an ultrasonic frequency
  • a left power amplifier L3 for example, a class B amplifier or a class D amplifier
  • the right speaker R1 and the left speaker L1 are ultrasonic wave generation means for generating ultrasonic waves in a parametric speaker, and convert an electric signal (amplifier drive signal) into air vibrations, and have a frequency (20 kHz or more) higher than the human audible band. ) Air vibration.
  • the specific ultrasonic wave generation means used for the right speaker R1 and the left speaker L1 is not limited, but as a specific example, in this embodiment, a plurality of piezoelectric elements capable of generating ultrasonic waves are assembled in an array. It is arranged.
  • the right speaker R1 emits an ultrasonic wave toward the right ear of the driver 200 sitting on the driver's seat 100
  • the left speaker L1 emits an ultrasonic wave toward the left ear of the driver 200 sitting on the driver's seat 100.
  • the right speaker R1 and the left speaker L1 are disposed above the head position of the driver 200 sitting on the driver seat 100.
  • the right speaker R1 is installed on the ceiling of the vehicle with the ultrasonic irradiation direction (the central axis of ultrasonic irradiation) directed to the right ear position of the driver 200
  • the left speaker L1 is installed on the ceiling of the vehicle with the ultrasonic irradiation direction (the central axis of ultrasonic irradiation) directed toward the left ear position of the driver 200.
  • the distance H from the right speaker R1 and the left speaker L1 to the ear position of the driver 200 is not limited, and varies depending on the ceiling position of the vehicle.
  • each of the right speaker R1 and the left speaker L1 is provided so that the ultrasonic irradiation direction can be adjusted (not limited). Accordingly, it is possible to always direct the ultrasonic wave irradiation direction to the left and right ear positions of the driver 200 according to the height position of the head and the front and rear positions of the seat 100.
  • ultrasonic waves obtained by ultrasonically modulating the “left localization winker operating sound signal (left localization binaural signal)” are transmitted from the right speaker R1 and the left speaker L1 to the left and right ears of the driver 200. Irradiated toward.
  • the ultrasonic wave modulated by the “winker operating sound signal” irradiated from the right speaker R1 and the left speaker L1 toward the left and right ears of the driver 200 has a short wavelength due to the viscosity of the air as it propagates in the air. Is distorted and blunted. Then, the amplitude component contained in the ultrasonic wave in the air that is being propagated is self-demodulated, and “winker operating sound” is reproduced in the left and right ears of the driver 200. Alternatively, the “winker operating sound” is reproduced in the left and right ears of the driver 200 by the self-demodulation of the ultrasonic waves that reach the head of the driver 200 before demodulation at the head (near the ear, etc.) of the driver 200.
  • the reproduction sound almost similar to the headphones can be given to the driver 200.
  • the reproduction sound directly reproduced at the left and right ears of the driver 200 is a reproduction sound of binaural recording as described above. For this reason, although the headphones are not worn, the three-dimensional sound can be given to the driver 200 in the same manner as the binaural reproduction (reproduction of binaural recording) using the headphones.
  • the sound image can be stereo-located at a position 300 away from the driver 200 as shown in FIG. 1B, for example, by “parametric speaker + binaural playback”.
  • the right speaker R1 and the left speaker L1 are arranged above the driver 200. Specifically, in this embodiment, the right speaker R1 and the left speaker L1 are arranged 60 ° or more above the horizontal line of the assumed ear position (designed ear position) of the driver 200 sitting on the driver's seat 100.
  • human ears have different audible frequencies depending on the direction of sound generation due to the structure of the ear shell (so-called mimitabusa). Specifically, when a human ear generates a sound from above, a high sound of 5 kHz or higher can be heard with a higher sensitivity than a case of generating a sound from the front, and conversely, the sensitivity of a low sound of 5 kHz or lower is low. It is known to go down.
  • the driver 200 can easily recognize “sound information useful for driving”.
  • the “winker operating sound” is set to 7 kHz to 8 kHz (for example, 7.7 kHz) and given to the driver 200 from above, so that the driver 200 recognizes the “winker operating sound”. It is easy to do.
  • the sound pressure that can be heard by the driver 200 is indicated by a broken line A1 in FIG.
  • the sound pressure that can be heard by the driver 200 becomes a solid line A2 in FIG.
  • the noise of the right speaker R1 and the left speaker L1 in which a plurality of piezoelectric elements are gathered in an array includes many 1 kHz to 3 kHz.
  • the sensitivity of a low sound of 5 kHz or less is lowered as compared with the case where the sound is generated from the front.
  • the ultrasonic irradiation direction of the right speaker R ⁇ b> 1 is directed to the right ear position R of the driver 200.
  • the ultrasonic irradiation direction (the central axis of ultrasonic irradiation) of the left speaker L1 is directed to the left ear position L of the driver 200.
  • the ultrasonic speaker is disposed above the driver 200, unlike the present disclosure, when a “mono reproduction sound” is generated at the center position C of the head of the driver 200 by the parametric speaker technology, (I) It is necessary to increase the maximum sound pressure generated at the center position C in consideration of the reach of the sound to the ear, (Ii) When the head position changes from front to back and from side to side, as shown by the broken line C0 in FIG. 6, the sound pressure change heard by the driver 200 increases.
  • the arrangement interval W between the right speaker R1 and the left speaker L1 is 15 cm or more (preferably 20 cm or more) and 45 cm or less.
  • the arrangement interval W between the right speaker R1 and the left speaker L1 is equal to or larger than the “width of the assumed head (designed head width: for example, average adult width)” of the driver 200. And below the “assumed shoulder width (designed shoulder width: average adult shoulder width)" of the driver 200.
  • the arrangement interval W between the right speaker R1 and the left speaker L1 is set narrower than “20 cm which is the width of the assumed head” of the driver 200, the arrangement of the right speaker R1 and the left speaker L1 swings outward (the ultrasonic irradiation axis is Outward from parallel). Then, the ultrasonic waves irradiated from the right speaker R1 and the left speaker L1 are diffused, resulting in a problem that the sound pressure of the reproduced sound reaching the passenger in the passenger seat increases.
  • the arrangement interval W between the right speaker R1 and the left speaker L1 is set wider than “the assumed shoulder width of 45 cm” of the driver 200, the internal arrangement of the arrangement of the right speaker R1 and the left speaker L1 (the ultrasonic irradiation axis is The degree of inward) is greater. Then, the sound pressure of the reproduction sound that reaches the passenger in the passenger seat increases due to the reflected sound that is reflected by the driver 200 and reaches the passenger in the passenger seat or the reflected sound that is reflected from the door or the like because the vehicle interior is narrow. is there.
  • the arrangement interval W between the right speaker R1 and the left speaker L1 is set to be not less than “20 cm of the assumed head width of the head” and not more than “45 cm of the assumed shoulder width” of the driver 200.
  • the sound pressure difference between the “reproduction sound audible to the driver 200” and the “reproduction sound audible to the passenger in the passenger seat” can be secured large, and “only useful for the driver” is provided to the “driver 200 only” by three-dimensional sound. be able to.
  • the reproduced sound easily reaches the outer ear, and the sound pressure of the reproduced sound increases.
  • the sound pressure of the reproduced sound that can be heard by the driver 200 increases as the arrangement interval W between the right speaker R1 and the left speaker L1 increases.
  • Fig. 7 The experimental results in Fig. 7 are data measured in a wide space, not vehicle interior data. For this reason, in FIG. 7, the reflected sound by vehicle members, such as a door, is not contained in data.
  • the arrangement interval W between the right speaker R1 and the left speaker L1 is set in a range of “assumed head width (20 cm)” to “assumed shoulder width (45 cm)” of the driver 200.
  • Ultrasonic waves used for parametric speakers have strong directivity, so that the spread of sound can be suppressed and "sound used for recording" can be given to the dummy head.
  • highly accurate “sound 3D information (localization information)” can be given to the dummy head that performs binaural recording.
  • Example 2 A second embodiment will be described with reference to FIGS. 8A, 8B, and 9.
  • FIG. the same reference numerals as those in the first embodiment denote the same functional objects.
  • feature Technology 1 of Example 2 In the first embodiment, an example in which the driver 200 is given “sound information useful for driving (blinker operation sound, warning sound, etc.)” at a high frequency (7 kHz to 8 kHz) is shown, but the frequency range of the reproduced sound is limited. For example, a reproduction sound including a low sound may be given to the driver 200.
  • the second embodiment is a combination of the present disclosure with “audio equipment such as music and radio” so that only the driver 200 can be given “sound waves such as music and radio”.
  • the “music, radio, etc.” heard by the driver 200 does not feel troublesome for passengers other than the driver 200.
  • the driver 200 can listen to “music, radio, etc.” without worrying about other occupants while driving a vehicle at midnight.
  • FIGS. 8A and 8B A specific example in which a sound pressure difference (for example, 20 dB or more) between the driver 200 and another occupant can be secured as an example in which only the driver 200 is given “sound waves such as music and radio” will be described with reference to FIGS. 8A and 8B. To do.
  • a sound pressure difference for example, 20 dB or more
  • the reproduced sound when the reproduced sound is generated from the front by the driver 200 by the parametric speaker technology, the reproduced sound is heard by a passenger in the rear seat.
  • a sufficiently large sound pressure difference between the sound pressure level audible to the driver 200 (solid line D1) and the sound pressure level audible to the rear seat occupant (dashed line D2) can be secured. Can not.
  • the right speaker R1 and the left speaker L1 are arranged above the driver 200. Therefore, as described in the above “Effect 3 of the embodiment”, “reproduction is performed at the ear of the driver 200”. "Reproduced sound (reproduced sound with a high degree of straightness by a parametric speaker)” can be heard as "direct sound (passing sound that has passed through the driver 200) or reflected sound (sound reflected by the driver 200 or the like) to a passenger in the passenger seat or the rear seat”””Defects" can be prevented. Specifically, as shown in FIG.
  • the second embodiment provides the driver 200 with sound waves including not only high frequencies but also low sounds (sound waves such as music and radio).
  • the right speaker R1 and the left speaker L1 are arranged 20 cm or more apart (more than the lateral width of the driver's head). Thereby, the sound pressure of the low sound given to the driver 200 can be increased by reproducing the reproduced sound including the low sound at the left and right ears of the driver 200.
  • the ultrasonic speaker is disposed above the driver 200, unlike the present disclosure, when the monaural reproduction sound is generated at the center position C of the head of the driver 200 by the parametric speaker technology, the ultrasonic irradiation of the ultrasonic speaker is performed.
  • the intersection angle between the shaft and the left and right external auditory canals of the driver 200 becomes abrupt (less than 90 °). As a result, as shown by a broken line E1 in FIG.
  • the right speaker R1 and the left speaker L1 are arranged 20 cm or more apart (more than the lateral width of the driver's head), (I) While the intersection angle between the ultrasonic irradiation axis of the right speaker R1 and the right external auditory canal of the driver 200 is 90 ° or more, (Ii) The intersection angle between the ultrasonic irradiation axis of the left speaker L1 and the left external auditory canal of the driver 200 is also 90 ° or more.
  • the intersection angle between the ultrasonic irradiation axes of the right speaker R1 and the left speaker L1 and the left and right external auditory canals of the driver 200 is closer to a straight line than in the case of monaural.
  • the bass that can be heard by the driver 200 increases. That is, the bass sound heard by the driver 200 can be enhanced without increasing the number of piezoelectric speakers.
  • “winker operation sound” is shown as an example of “sound information useful for driving” to be given to the driver 200.
  • the present invention is not limited, and various sound information (such as pedestrians in the traveling direction of the vehicle)
  • a warning sound for notifying the presence, a warning sound for notifying the presence of the vehicle to be changed when the lane is changed, a warning sound for notifying the possibility of a vehicle lane protruding, a guidance sound for car navigation, etc.) may be given.
  • the driver 200 is shown as an example of “a specific person”. However, the driver 200 is not limited, and may be a passenger in a passenger seat or a rear seat, or may be a person sitting in a seat different from that of an automobile. You may apply this indication to the technique which gives a three-dimensional sound.

Abstract

L'invention concerne un dispositif d'effet audio 3D utilisant un haut-parleur droit (R1) et un haut-parleur (L1) pour fournir exclusivement des effets audio 3D pour une personne assise sur un siège (100). Le haut-parleur droit (R1) constitue le moyen de génération d'onde ultrasonore d'un haut-parleur paramétrique d'oreille droite (2) qui émet des ondes ultrasonores vers la position de l'oreille droite d'une personne (200) assise sur le siège (100) et produit un son de lecture dans l'oreille droite. Le haut-parleur gauche (L1) correspond au moyen de génération d'onde ultrasonore d'un haut-parleur paramétrique d'oreille gauche (3) qui émet des ondes ultrasonores vers la position de l'oreille gauche de la personne (200) assise sur le siège (100) et produit des sons de lecture dans l'oreille gauche. Le haut-parleur droit (R1) et le haut-parleur gauche (L1) sont disposés au-dessus de la position de la tête de la personne (200) assise sur le siège (100).
PCT/JP2013/006958 2012-12-03 2013-11-27 Dispositif d'effet audio 3d WO2014087605A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012-264761 2012-12-03
JP2012264761A JP2014110566A (ja) 2012-12-03 2012-12-03 立体音響装置

Publications (1)

Publication Number Publication Date
WO2014087605A1 true WO2014087605A1 (fr) 2014-06-12

Family

ID=50883047

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2013/006958 WO2014087605A1 (fr) 2012-12-03 2013-11-27 Dispositif d'effet audio 3d

Country Status (2)

Country Link
JP (1) JP2014110566A (fr)
WO (1) WO2014087605A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019011549A1 (fr) * 2017-07-12 2019-01-17 Zf Friedrichshafen Ag Émission d'informations localisée
JP7332741B1 (ja) 2022-03-29 2023-08-23 本田技研工業株式会社 安全支援装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6470041B2 (ja) 2014-12-26 2019-02-13 株式会社東芝 ナビゲーション装置、ナビゲーション方法及びプログラム

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006081117A (ja) * 2004-09-13 2006-03-23 Ntt Docomo Inc 超指向性スピーカシステム
JP2011130359A (ja) * 2009-12-21 2011-06-30 Denso Corp 車両用パーソナル音響装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07102788B2 (ja) * 1989-07-24 1995-11-08 松下電器産業株式会社 ヘッドアップディスプレイ
JPH08332896A (ja) * 1995-06-09 1996-12-17 Shinji Suga 聴音装置
JP5020606B2 (ja) * 2006-11-17 2012-09-05 アルパイン株式会社 周辺監視装置
JP5050720B2 (ja) * 2007-08-06 2012-10-17 日産自動車株式会社 警報装置およびその方法
JP4557054B2 (ja) * 2008-06-20 2010-10-06 株式会社デンソー 車載用立体音響装置
JP2010034755A (ja) * 2008-07-28 2010-02-12 Sony Corp 音響処理装置および音響処理方法
JP2010068023A (ja) * 2008-09-08 2010-03-25 Mitsubishi Electric Engineering Co Ltd バーチャルサラウンド音響装置
JP5776962B2 (ja) * 2011-01-26 2015-09-09 日本電気株式会社 ナビゲーション装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006081117A (ja) * 2004-09-13 2006-03-23 Ntt Docomo Inc 超指向性スピーカシステム
JP2011130359A (ja) * 2009-12-21 2011-06-30 Denso Corp 車両用パーソナル音響装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019011549A1 (fr) * 2017-07-12 2019-01-17 Zf Friedrichshafen Ag Émission d'informations localisée
JP7332741B1 (ja) 2022-03-29 2023-08-23 本田技研工業株式会社 安全支援装置

Also Published As

Publication number Publication date
JP2014110566A (ja) 2014-06-12

Similar Documents

Publication Publication Date Title
JP2013013042A (ja) 立体音響装置
JP6286583B2 (ja) ラウドスピーカシステム
US9613637B2 (en) Driving support device
US9743213B2 (en) Enhanced auditory experience in shared acoustic space
KR100799783B1 (ko) 차량용 스피커 어레이
WO2014068835A1 (fr) Appareil de support à la conduite, et système de support à la conduite
JP2013034122A (ja) 車両用立体音響装置
JP2009159120A (ja) 自動車用スピーカー
CN110626300A (zh) 用于车辆乘客用的类3d声音体验的私人音频系统及其创建方法
JP6799391B2 (ja) 車両用方向提示装置
WO2014087605A1 (fr) Dispositif d'effet audio 3d
JP4627973B2 (ja) スピーカ装置
TW201617247A (zh) 車載多媒體系統與控制方法
WO2007139066A1 (fr) système de haut-parleurs
JP2010272911A (ja) 音情報提供装置及び音情報提供方法
CN111791775A (zh) 一种高音质骨传导座椅头枕的结构及控制方法
WO2005034574A1 (fr) Dispositif de reproduction acoustique tridimensionnelle au moyen d'un casque
JP2011130359A (ja) 車両用パーソナル音響装置
CN211252320U (zh) 一种高音质骨传导座椅头枕的结构
JP4216026B2 (ja) 車両用音響装置
JP5729228B2 (ja) 車載警告装置、当該装置を用いた衝突警告装置及びレーン逸脱警告装置
WO2017175304A1 (fr) Système de sortie de son, dispositif de sortie de son, et dispositif de commande
JP2003087900A (ja) スピーカ装置
JP2023548849A (ja) 増強されたオーディオを提供するためのシステム及び方法
KR20230009148A (ko) 차량용 음향 시스템 및 이의 음향 출력 방법

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13861420

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13861420

Country of ref document: EP

Kind code of ref document: A1