EP1372356A1 - Verfahren zur Wiedergabe von mehreren unabhängigen Signalen, insbesondere an einem Fahrzeug - Google Patents

Verfahren zur Wiedergabe von mehreren unabhängigen Signalen, insbesondere an einem Fahrzeug Download PDF

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Publication number
EP1372356A1
EP1372356A1 EP02013455A EP02013455A EP1372356A1 EP 1372356 A1 EP1372356 A1 EP 1372356A1 EP 02013455 A EP02013455 A EP 02013455A EP 02013455 A EP02013455 A EP 02013455A EP 1372356 A1 EP1372356 A1 EP 1372356A1
Authority
EP
European Patent Office
Prior art keywords
sound signals
sound
loudspeakers
reproducing
seats
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP02013455A
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English (en)
French (fr)
Other versions
EP1372356B1 (de
Inventor
Roland Aubauer
Christoph Euscher
Michael Hülskemper
Stefano Ambrosius Klinke
Frank Lorenz
Christoph Pörschmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Continental Automotive GmbH
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to DE60233309T priority Critical patent/DE60233309D1/de
Priority to EP02013455A priority patent/EP1372356B1/de
Publication of EP1372356A1 publication Critical patent/EP1372356A1/de
Application granted granted Critical
Publication of EP1372356B1 publication Critical patent/EP1372356B1/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S1/00—Two-channel systems
    • H04S1/002—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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic

Definitions

  • the invention relates to a method for reproducing a plurality of mutually unrelated sound signals by means of a plurality of loudspeakers and to a sound reproducing system for applying this method.
  • JP08289389 discloses a acoustic system for use in a vehicle in which each seat is provided with one or more loudspeakers. Each person in the car can select a sound signal from a plurality of sound sources independent from the selection made by the other persons. By means of a signal matrix switch the selected sound signal is supplied to the loudspeaker(s) closest to the person making the selection. In such a situation it may easily occur that a person in one seat is bothered by the sound signal reproduced by the loudspeakers associated with another seat.
  • the on-vehicle acoustic device of JP09171387 provides a masking means which outputs noise from a speaker to mask the sound signals reproduced by the loudspeakers of other seats.
  • a method for reproducing a plurality of mutually unrelated sound signals by means of a plurality of loudspeakers comprising:
  • Crosstalk cancellation filters are known per se, for example from M.I.T. Media Laboratory Perceptual Computing Section Technical Report No. 342, July 6, 1995, Transaural 3-D audio, by William G. Gardner.
  • a 3-D audio system is disclosed in which a stereo sound signal is first processed by a binaural spatializer. The output of the spatializer is thereafter fed to a transaural audio system which delivers binaural signals to the ears of a person using a pair of stereo loudspeakers.
  • the transaural audio system includes a crosstalk cancelation filter for canceling the crosstalk leakage from each loudspeaker to the opposite ear. This report does not address the problem of crosstalk between mutually unrelated sound signals which are reproduced for different people.
  • the sound signals comprise multichannel sound signals and the method comprises the additional step of filtering the multichannel sound signals in the crosstalk cancellation filter in order to cancel out cross talk between the individual channels of the multichannel sound signals, the filtered multichannel sound signals being supplied to the loudspeakers.
  • the operation of the crosstalk cancellation filter is in this respect similar to the operation of the crosstalk cancelation filter as used in the 3-D audio system of Gardner. The crosstalk leakage from each channel to the other channel(s) is thereby effectively eliminated.
  • the multichannel sound signals are stereo sound signals for reproduction by a pair of stereo loudspeakers.
  • the method comprises the further steps of processing the stereo sound signals in a binaural spatializer and of filtering the binaurally spatialized stereo sound signals in the crosstalk cancellation filter.
  • the loudspeakers are provided on or above a plurality of seats or chairs.
  • the loudspeakers are provided on the top of the backs of the seats or chairs.
  • the loudspeakers are provided on headrests of the seats or chairs.
  • the loudspeakers may be provided above the seats or chairs, e.g. on the ceiling above the seats or chairs.
  • the seats or chairs are comprised in a car or in a space for presenting multi-media shows such as motion pictures.
  • the invention also relates to a sound reproducing system, for applying the method of anyone of the preceding claims, comprising sound processing means and coupled thereto loudspeakers, the sound processing means being arranged for receiving a plurality of sound signals from one or more sound sources, the sound processing means comprising a crosstalk cancellation filter for filtering the received sound signals in order to cancel out crosstalk between the individual sound signals, the sound processing means being further arranged for supplying the filtered sound signals to the loudspeakers.
  • the sound signals comprise multichannel sound signals and the crosstalk cancellation filter is arranged for filtering the multichannel sound signals in order to cancel out cross talk between the individual channels of the multichannel sound signals, the sound processing means being further arranged for supplying the filtered multichannel sound signals to the loudspeakers.
  • the multichannel sound signals may be stereo sound signals for reproduction by a pair of stereo loudspeakers.
  • the sound processing means may comprise a binaural spatializer for processing the stereo sound signals and for supplying the binaurally spatialized sound signals to the crosstalk cancellation filter.
  • the loudspeakers are provided on or above a plurality of seats or chairs, e.g. on the top of the backs of the seats or chairs or on headrests of the seats or chairs.
  • the loudspeakers may be provided above the seats or chairs, e.g. on the ceiling above the seats or chairs.
  • the seats or chairs may be comprised in a car or in a space for presenting multi-media shows such as motion pictures.
  • the sole Figure shows schematically an embodiment of a sound reproducing system according to the invention.
  • the sound reproducing system comprises sound processing means 10 and coupled thereto loudspeakers 12, 14.
  • the sound processing means 10 are arranged for receiving a plurality of sound signals 26, 28 from one or more sound sources (not shown).
  • the sound signals 26, 28 are stereo sound signals
  • the loudspeakers 12, 14 are stereo loudspeakers for reproducing the stereo sound signals.
  • the sound reproducing system may equally well be used with other multichannel or single channel sound signals with corresponding loudspeaker arrangements.
  • the sound processing means 10 comprises two binaural spatializers 18, 20 and a crosstalk cancellation filter 16.
  • the binaural spatializers 18, 20 are arranged for processing the stereo sound signals 26, 28 and for supplying the resulting binaurally spatialized sound signals 30, 32 to the crosstalk cancellation filter 16.
  • the crosstalk cancellation filter 16 is arranged for filtering the binaurally spatialized sound signals 30, 32 in order to cancel out crosstalk between the individual sound signals 30, 32 and between the individual channels of the multichannel sound signals. In the Figure this filtering is shown in detail for the left channel of the stereo sound signal 26 and the therewith corresponding left channel of the binaurally spatialized stereo sound signal 30.
  • the crosstalk between this channel and each of the four channels of the stereo sound signals 30 and 32 is canceled by means of a specific crosstalk cancellation unit: for instance the crosstalk between the left channel of sound signal 30 (AL) and the right channel of sound signal 32 (BR) is cancelled by means of a specific crosstalk cancellation unit BR-AL.
  • the output signals of the four specific crosstalk cancellation units are combined in an adder 22 and the combined signal, from which the crosstalk is substantially removed, is finally supplied to the speaker 12 (Speaker AL).
  • the crosstalk cancellation for the other channels AR, BL and BR is not shown in detail in the Figure but is similar in operation to the crosstalk cancellation for the AL channel.
  • For each of these other channels AR, BL and BR four specific crosstalk cancellation units and an adder 22 are provided.
  • the filtered stereo sound signals are supplied to the loudspeakers 12 and 14.
  • the loudspeakers 12 are the left loudspeakers reproducing the left channel of the stereo sound signals and the loudspeakers 14 are the right loudspeakers reproducing the right channel of the stereo sound signals.
  • Crosstalk cancellation filters and binaural spatializers are known per se, for example from M.I.T. Media Laboratory Perceptual Computing Section Technical Report No. 342, July 6, 1995, Transaural 3-D audio, by William G. Gardner.
  • the sound processing means 10 does not comprise the binaural spatializers 18 and 20 in which case the sound signals 26, 28 are directly supplied to the crosstalk cancellation filter 16.
  • the loudspeakers 12, 14 may be provided on or above a plurality of seats or chairs (not shown).
  • the loudspeakers 12, 14 may be provided on the top of the backs of the seats or chairs or on headrests of the seats or chairs.
  • the loudspeakers 12, 14 may be mounted on a ceiling above the seats or chairs.
  • the seats or chairs are preferably comprised in a car, in which situation application of the invention allows the passengers of the car to listen to different sound signals without having to wear headphones and without substantial interference of the different sound signals.
  • the seats or chairs may also be comprised in a space for presenting multi-media shows, such as a cinema in which motion pictures are shown, in which situation application of the invention may allow members of the audience to listen to different language versions of the sound signals without having to wear headphones and without substantial interference of the different sound signals.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Stereophonic System (AREA)
EP02013455A 2002-06-13 2002-06-13 Verfahren zur Wiedergabe von mehreren unabhängigen Signalen, insbesondere an einem Fahrzeug Expired - Fee Related EP1372356B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE60233309T DE60233309D1 (de) 2002-06-13 2002-06-13 Verfahren zur Wiedergabe von mehreren unabhängigen Signalen, insbesondere an einem Fahrzeug
EP02013455A EP1372356B1 (de) 2002-06-13 2002-06-13 Verfahren zur Wiedergabe von mehreren unabhängigen Signalen, insbesondere an einem Fahrzeug

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02013455A EP1372356B1 (de) 2002-06-13 2002-06-13 Verfahren zur Wiedergabe von mehreren unabhängigen Signalen, insbesondere an einem Fahrzeug

Publications (2)

Publication Number Publication Date
EP1372356A1 true EP1372356A1 (de) 2003-12-17
EP1372356B1 EP1372356B1 (de) 2009-08-12

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP02013455A Expired - Fee Related EP1372356B1 (de) 2002-06-13 2002-06-13 Verfahren zur Wiedergabe von mehreren unabhängigen Signalen, insbesondere an einem Fahrzeug

Country Status (2)

Country Link
EP (1) EP1372356B1 (de)
DE (1) DE60233309D1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2389016A1 (de) * 2010-05-18 2011-11-23 Harman Becker Automotive Systems GmbH Individualisierung von Tonsignalen
EP2172058B1 (de) * 2007-07-19 2014-09-03 Bose Corporation System und verfahren für direktional abgestrahlten klang
US20150036827A1 (en) * 2012-02-13 2015-02-05 Franck Rosset Transaural Synthesis Method for Sound Spatialization
US9327628B2 (en) 2013-05-31 2016-05-03 Bose Corporation Automobile headrest
US9699537B2 (en) 2014-01-14 2017-07-04 Bose Corporation Vehicle headrest with speakers
US10321252B2 (en) 2012-02-13 2019-06-11 Axd Technologies, Llc Transaural synthesis method for sound spatialization

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9088842B2 (en) 2013-03-13 2015-07-21 Bose Corporation Grille for electroacoustic transducer

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6009178A (en) * 1996-09-16 1999-12-28 Aureal Semiconductor, Inc. Method and apparatus for crosstalk cancellation
EP1014756A2 (de) * 1998-12-22 2000-06-28 Texas Instruments Incorporated Verfahren und Vorrichtung für Lautsprecher mit dreidimensionalen Tonpositionierung
US6243476B1 (en) * 1997-06-18 2001-06-05 Massachusetts Institute Of Technology Method and apparatus for producing binaural audio for a moving listener

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3042731B2 (ja) * 1991-08-02 2000-05-22 日本電信電話株式会社 音声再生装置
JP2002191099A (ja) * 2000-09-26 2002-07-05 Matsushita Electric Ind Co Ltd 信号処理装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6009178A (en) * 1996-09-16 1999-12-28 Aureal Semiconductor, Inc. Method and apparatus for crosstalk cancellation
US6243476B1 (en) * 1997-06-18 2001-06-05 Massachusetts Institute Of Technology Method and apparatus for producing binaural audio for a moving listener
EP1014756A2 (de) * 1998-12-22 2000-06-28 Texas Instruments Incorporated Verfahren und Vorrichtung für Lautsprecher mit dreidimensionalen Tonpositionierung

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2172058B1 (de) * 2007-07-19 2014-09-03 Bose Corporation System und verfahren für direktional abgestrahlten klang
EP2389016A1 (de) * 2010-05-18 2011-11-23 Harman Becker Automotive Systems GmbH Individualisierung von Tonsignalen
CN102256192A (zh) * 2010-05-18 2011-11-23 哈曼贝克自动系统股份有限公司 声音信号的分离
US20110286614A1 (en) * 2010-05-18 2011-11-24 Harman Becker Automotive Systems Gmbh Individualization of sound signals
US20150036827A1 (en) * 2012-02-13 2015-02-05 Franck Rosset Transaural Synthesis Method for Sound Spatialization
US10321252B2 (en) 2012-02-13 2019-06-11 Axd Technologies, Llc Transaural synthesis method for sound spatialization
US9327628B2 (en) 2013-05-31 2016-05-03 Bose Corporation Automobile headrest
US9699537B2 (en) 2014-01-14 2017-07-04 Bose Corporation Vehicle headrest with speakers

Also Published As

Publication number Publication date
EP1372356B1 (de) 2009-08-12
DE60233309D1 (de) 2009-09-24

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