WO1998042161A3 - Telephonic transmission of three-dimensional sound - Google Patents

Telephonic transmission of three-dimensional sound Download PDF

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Publication number
WO1998042161A3
WO1998042161A3 PCT/GB1998/000813 GB9800813W WO9842161A3 WO 1998042161 A3 WO1998042161 A3 WO 1998042161A3 GB 9800813 W GB9800813 W GB 9800813W WO 9842161 A3 WO9842161 A3 WO 9842161A3
Authority
WO
WIPO (PCT)
Prior art keywords
signals
transmission
speaker
compressed
reproduced
Prior art date
Application number
PCT/GB1998/000813
Other languages
French (fr)
Other versions
WO1998042161A2 (en
Inventor
David Monteith
Alastair Sibbald
Martin Peter Todd
Original Assignee
Central Research Lab Ltd
David Monteith
Alastair Sibbald
Martin Peter Todd
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
Priority claimed from GBGB9705565.1A external-priority patent/GB9705565D0/en
Priority claimed from GBGB9707962.8A external-priority patent/GB9707962D0/en
Application filed by Central Research Lab Ltd, David Monteith, Alastair Sibbald, Martin Peter Todd filed Critical Central Research Lab Ltd
Priority to EP98909666A priority Critical patent/EP0968624A2/en
Publication of WO1998042161A2 publication Critical patent/WO1998042161A2/en
Publication of WO1998042161A3 publication Critical patent/WO1998042161A3/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S1/00—Two-channel systems

Landscapes

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

Abstract

The invention relates to telephonic transmission of 3D sound. Existing video conferencing systems suffer from the disadvantage that following transmission of a person speaking, the speaker's voice tends to become 'disembodied'. That is, if a person moves with respect to a microphone, the reproduced voice tends not to move with the speaker. The invention overcomes or reduces this effect by obtaining left and right monophonic signals, modifying the signals to compensate for head related air-to-ear transfer functions and performing equalisation and cross-talk cancellation on the signals. Eventually signals are compressed to produce a compressed binaural signal for transmission along a telephone link so that frequencies are split into separate bands, but relative phase differences between signals in different frequency bands are preserved. 3D sounds are therefore able to be transmitted via telephone links, and reproduced more effectively, than was previously possible.
PCT/GB1998/000813 1997-03-18 1998-03-18 Telephonic transmission of three-dimensional sound WO1998042161A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP98909666A EP0968624A2 (en) 1997-03-18 1998-03-18 Telephonic transmission of three dimensional sound

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GBGB9705565.1A GB9705565D0 (en) 1997-03-18 1997-03-18 Telephone transmission of 3d sound
GB9705565.1 1997-03-18
GBGB9707962.8A GB9707962D0 (en) 1997-04-19 1997-04-19 Telephonic transmission of 3D sound
GB9707962.8 1997-04-19

Publications (2)

Publication Number Publication Date
WO1998042161A2 WO1998042161A2 (en) 1998-09-24
WO1998042161A3 true WO1998042161A3 (en) 1998-12-17

Family

ID=26311214

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1998/000813 WO1998042161A2 (en) 1997-03-18 1998-03-18 Telephonic transmission of three-dimensional sound

Country Status (2)

Country Link
EP (1) EP0968624A2 (en)
WO (1) WO1998042161A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006048295B4 (en) 2006-10-12 2008-06-12 Andreas Max Pavel Method and device for recording, transmission and reproduction of sound events for communication applications
CN102809742B (en) 2011-06-01 2015-03-18 杜比实验室特许公司 Sound source localization equipment and method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994022278A1 (en) * 1993-03-18 1994-09-29 Central Research Laboratories Limited Plural-channel sound processing
WO1995015069A1 (en) * 1993-11-25 1995-06-01 Central Research Laboratories Limited Apparatus for processing binaural signals
US5434913A (en) * 1993-11-24 1995-07-18 Intel Corporation Audio subsystem for computer-based conferencing system
US5596644A (en) * 1994-10-27 1997-01-21 Aureal Semiconductor Inc. Method and apparatus for efficient presentation of high-quality three-dimensional audio

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994022278A1 (en) * 1993-03-18 1994-09-29 Central Research Laboratories Limited Plural-channel sound processing
US5434913A (en) * 1993-11-24 1995-07-18 Intel Corporation Audio subsystem for computer-based conferencing system
WO1995015069A1 (en) * 1993-11-25 1995-06-01 Central Research Laboratories Limited Apparatus for processing binaural signals
US5596644A (en) * 1994-10-27 1997-01-21 Aureal Semiconductor Inc. Method and apparatus for efficient presentation of high-quality three-dimensional audio

Also Published As

Publication number Publication date
EP0968624A2 (en) 2000-01-05
WO1998042161A2 (en) 1998-09-24

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