GB2384149A - A method of audio signal processing for a loudspeaker located close to an ear - Google Patents

A method of audio signal processing for a loudspeaker located close to an ear

Info

Publication number
GB2384149A
GB2384149A GB0305716A GB0305716A GB2384149A GB 2384149 A GB2384149 A GB 2384149A GB 0305716 A GB0305716 A GB 0305716A GB 0305716 A GB0305716 A GB 0305716A GB 2384149 A GB2384149 A GB 2384149A
Authority
GB
United Kingdom
Prior art keywords
ear
signal
located close
signal processing
audio signal
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.)
Withdrawn
Application number
GB0305716A
Other versions
GB0305716D0 (en
Inventor
Alastair Sibbald
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.)
Central Research Laboratories Ltd
Original Assignee
Central Research Laboratories Ltd
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 Central Research Laboratories Ltd filed Critical Central Research Laboratories Ltd
Publication of GB0305716D0 publication Critical patent/GB0305716D0/en
Publication of GB2384149A publication Critical patent/GB2384149A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
    • H04S7/30—Control circuits for electronic adaptation of the sound field
    • H04S7/305—Electronic adaptation of stereophonic audio signals to reverberation of the listening space
    • 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
    • H04S1/005—For headphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2420/00—Techniques used stereophonic systems covered by H04S but not provided for in its groups
    • H04S2420/01—Enhancing the perception of the sound image or of the spatial distribution using head related transfer functions [HRTF's] or equivalents thereof, e.g. interaural time difference [ITD] or interaural level difference [ILD]

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Stereophonic System (AREA)

Abstract

A method of audio signal processing for a loudspeaker located close to an ear in use, the method consisting of or including: creating one or more derived signal from an original monophonic input signal, the derived signals being representative of the original signal being scattered by one or more bodies remote from said ear (excluding room boundary reflection or reverberation), combining the derived signal or signals with said input signal to form a combined signal, and feeding the combined signal to said loudspeaker, thereby providing cues for enabling the listener to perceive the source of the sound of the original monophonic input signal to be located remote from said ear.
GB0305716A 2000-09-19 2001-09-10 A method of audio signal processing for a loudspeaker located close to an ear Withdrawn GB2384149A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0022891A GB2366975A (en) 2000-09-19 2000-09-19 A method of audio signal processing for a loudspeaker located close to an ear
PCT/GB2001/004055 WO2002025999A2 (en) 2000-09-19 2001-09-10 A method of audio signal processing for a loudspeaker located close to an ear

Publications (2)

Publication Number Publication Date
GB0305716D0 GB0305716D0 (en) 2003-04-16
GB2384149A true GB2384149A (en) 2003-07-16

Family

ID=9899677

Family Applications (2)

Application Number Title Priority Date Filing Date
GB0022891A Withdrawn GB2366975A (en) 2000-09-19 2000-09-19 A method of audio signal processing for a loudspeaker located close to an ear
GB0305716A Withdrawn GB2384149A (en) 2000-09-19 2001-09-10 A method of audio signal processing for a loudspeaker located close to an ear

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB0022891A Withdrawn GB2366975A (en) 2000-09-19 2000-09-19 A method of audio signal processing for a loudspeaker located close to an ear

Country Status (4)

Country Link
EP (1) EP1319323A2 (en)
JP (1) JP2004509544A (en)
GB (2) GB2366975A (en)
WO (1) WO2002025999A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1519628A3 (en) * 2003-09-29 2009-03-04 Siemens Aktiengesellschaft Method and device for the reproduction of a binaural output signal which is derived from a monaural input signal
FR2899424A1 (en) * 2006-03-28 2007-10-05 France Telecom Audio channel multi-channel/binaural e.g. transaural, three-dimensional spatialization method for e.g. ear phone, involves breaking down filter into delay and amplitude values for samples, and extracting filter`s spectral module on samples
KR20120004909A (en) * 2010-07-07 2012-01-13 삼성전자주식회사 Method and apparatus for 3d sound reproducing
JP5141738B2 (en) * 2010-09-17 2013-02-13 株式会社デンソー 3D sound field generator
BR112020018466A2 (en) 2018-11-13 2021-05-18 Dolby Laboratories Licensing Corporation representing spatial audio through an audio signal and associated metadata

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0338695A (en) * 1989-07-05 1991-02-19 Shimizu Corp Audible in-room sound field simulator
US5371799A (en) * 1993-06-01 1994-12-06 Qsound Labs, Inc. Stereo headphone sound source localization system
GB2337676A (en) * 1998-05-22 1999-11-24 Central Research Lab Ltd Modifying filter implementing HRTF for virtual sound
EP0966179A2 (en) * 1998-06-20 1999-12-22 Central Research Laboratories Limited A method of synthesising an audio signal

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2738099B1 (en) * 1995-08-25 1997-10-24 France Telecom METHOD FOR SIMULATING THE ACOUSTIC QUALITY OF A ROOM AND ASSOCIATED AUDIO-DIGITAL PROCESSOR

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0338695A (en) * 1989-07-05 1991-02-19 Shimizu Corp Audible in-room sound field simulator
US5371799A (en) * 1993-06-01 1994-12-06 Qsound Labs, Inc. Stereo headphone sound source localization system
GB2337676A (en) * 1998-05-22 1999-11-24 Central Research Lab Ltd Modifying filter implementing HRTF for virtual sound
EP0966179A2 (en) * 1998-06-20 1999-12-22 Central Research Laboratories Limited A method of synthesising an audio signal

Also Published As

Publication number Publication date
GB0022891D0 (en) 2000-11-01
GB0305716D0 (en) 2003-04-16
WO2002025999A2 (en) 2002-03-28
WO2002025999A3 (en) 2003-03-20
JP2004509544A (en) 2004-03-25
GB2366975A (en) 2002-03-20
EP1319323A2 (en) 2003-06-18

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)