CA2153171A1 - Sound Localization System for Teleconferencing Using Self-Steering Microphone Arrays - Google Patents

Sound Localization System for Teleconferencing Using Self-Steering Microphone Arrays

Info

Publication number
CA2153171A1
CA2153171A1 CA2153171A CA2153171A CA2153171A1 CA 2153171 A1 CA2153171 A1 CA 2153171A1 CA 2153171 A CA2153171 A CA 2153171A CA 2153171 A CA2153171 A CA 2153171A CA 2153171 A1 CA2153171 A1 CA 2153171A1
Authority
CA
Canada
Prior art keywords
station
sound
video image
teleconferencing
generating
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
CA2153171A
Other languages
French (fr)
Other versions
CA2153171C (en
Inventor
Eric John Addeo
John David Robbins
Gennady Shtirmer
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.)
Telcordia Licensing Co LLC
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2153171A1 publication Critical patent/CA2153171A1/en
Application granted granted Critical
Publication of CA2153171C publication Critical patent/CA2153171C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • H04R1/406—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/14—Systems for two-way working
    • H04N7/15—Conference systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/40—Details of arrangements for obtaining desired directional characteristic by combining a number of identical transducers covered by H04R1/40 but not provided for in any of its subgroups
    • H04R2201/403—Linear arrays of transducers

Abstract

A teleconferencing system (100) is disclosed having a video camera for generating a video signal representative of a video image of a first station B. A microphone array (150, 160) is also provided in the first station for receiving a sound from one or more fixed non-overlapping volume zones (151-159) into which the first station is divided. The microphone array is also provided for generating a monochannel audio signal (170) representative of the received sound and a direction signal indicating, based on the sound received from each zone, from which of the volume zones the sound originated.
The teleconferencing system also includes a display device (120A) at a second station A for displaying a video image of the first station. A
loudspeaker control device (140) is also provided at the second station for selecting a virtual location (121) on the displayed video image depending on the direction signal, and for generating stereo sound from the monochannel audio signal which stereo sound emanates from the virtual location on the displayed video image.
CA002153171A 1993-01-12 1994-01-11 Sound localization system for teleconferencing using self-steering microphone arrays Expired - Fee Related CA2153171C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/003,380 US5335011A (en) 1993-01-12 1993-01-12 Sound localization system for teleconferencing using self-steering microphone arrays
US003,380 1993-01-12
PCT/US1994/000447 WO1994016517A1 (en) 1993-01-12 1994-01-11 Sound localization system for teleconferencing using self-steering microphone arrays

Publications (2)

Publication Number Publication Date
CA2153171A1 true CA2153171A1 (en) 1994-07-21
CA2153171C CA2153171C (en) 1999-11-16

Family

ID=21705600

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002153171A Expired - Fee Related CA2153171C (en) 1993-01-12 1994-01-11 Sound localization system for teleconferencing using self-steering microphone arrays

Country Status (5)

Country Link
US (1) US5335011A (en)
EP (1) EP0682836A4 (en)
JP (1) JP2975687B2 (en)
CA (1) CA2153171C (en)
WO (1) WO1994016517A1 (en)

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