WO1999060788A8 - Locating an audio source - Google Patents

Locating an audio source

Info

Publication number
WO1999060788A8
WO1999060788A8 PCT/US1999/010667 US9910667W WO9960788A8 WO 1999060788 A8 WO1999060788 A8 WO 1999060788A8 US 9910667 W US9910667 W US 9910667W WO 9960788 A8 WO9960788 A8 WO 9960788A8
Authority
WO
WIPO (PCT)
Prior art keywords
audio source
audio
pickup device
image
reference point
Prior art date
Application number
PCT/US1999/010667
Other languages
French (fr)
Other versions
WO1999060788A9 (en
WO1999060788A1 (en
Inventor
Steven L Potts
Hong Wang
Wendi Beth Rabiner
Peter L Chu
Original Assignee
Picturetel Corp
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 Picturetel Corp filed Critical Picturetel Corp
Priority to DE69920138T priority Critical patent/DE69920138T2/en
Priority to JP2000550274A priority patent/JP4450508B2/en
Priority to EP99925630A priority patent/EP1004204B1/en
Priority to AU63087/99A priority patent/AU6308799A/en
Publication of WO1999060788A1 publication Critical patent/WO1999060788A1/en
Publication of WO1999060788A8 publication Critical patent/WO1999060788A8/en
Publication of WO1999060788A9 publication Critical patent/WO1999060788A9/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/78—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using electromagnetic waves other than radio waves
    • G01S3/782—Systems for determining direction or deviation from predetermined direction
    • G01S3/785—Systems for determining direction or deviation from predetermined direction using adjustment of orientation of directivity characteristics of a detector or detector system to give a desired condition of signal derived from that detector or detector system
    • G01S3/786—Systems for determining direction or deviation from predetermined direction using adjustment of orientation of directivity characteristics of a detector or detector system to give a desired condition of signal derived from that detector or detector system the desired condition being maintained automatically
    • G01S3/7864—T.V. type tracking systems
    • G01S3/7865—T.V. type tracking systems using correlation of the live video image with a stored image
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/80—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using ultrasonic, sonic or infrasonic waves
    • G01S3/802—Systems for determining direction or deviation from predetermined direction
    • G01S3/808—Systems for determining direction or deviation from predetermined direction using transducers spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems
    • G01S3/8083—Systems for determining direction or deviation from predetermined direction using transducers spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems determining direction of source
    • 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
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/005—Circuits for transducers, loudspeakers or microphones for combining the signals of two or more microphones
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/80—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using ultrasonic, sonic or infrasonic waves
    • G01S3/86—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using ultrasonic, sonic or infrasonic waves with means for eliminating undesired waves, e.g. disturbing noises
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2430/00—Signal processing covered by H04R, not provided for in its groups
    • H04R2430/20—Processing of the output signals of the acoustic transducers of an array for obtaining a desired directivity characteristic

Abstract

A system, such as a video conferencing system, is provided which includes an image pickup device (14), an audio pickup device (12), and an audio source locator (10). The image pickup device (14) generates image signals representative of an image, while the audio pickup device (12) generates audio signals representative of sound from audio source, such as speaking person. The audio source locator (10) processes the image signals and audio signals to determine a direction of the audio source relative to a reference point. The system can further determine a location of the audio source relative to the reference point. The reference point can be a camera (14). The system can use the direction or location information to frame a proper camera shot which would include the audio source.
PCT/US1999/010667 1998-05-15 1999-05-14 Locating an audio source WO1999060788A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE69920138T DE69920138T2 (en) 1998-05-15 1999-05-14 VIDEO CONFERENCE SYSTEM WITH TONE SOURCE SELECTION
JP2000550274A JP4450508B2 (en) 1998-05-15 1999-05-14 Audio source positioning
EP99925630A EP1004204B1 (en) 1998-05-15 1999-05-14 Videoconferencing system with audio source location
AU63087/99A AU6308799A (en) 1998-05-15 1999-05-14 Locating an audio source

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/079,840 US6593956B1 (en) 1998-05-15 1998-05-15 Locating an audio source
US09/079,840 1998-05-15

Publications (3)

Publication Number Publication Date
WO1999060788A1 WO1999060788A1 (en) 1999-11-25
WO1999060788A8 true WO1999060788A8 (en) 2000-01-13
WO1999060788A9 WO1999060788A9 (en) 2000-03-02

Family

ID=22153126

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/010667 WO1999060788A1 (en) 1998-05-15 1999-05-14 Locating an audio source

Country Status (6)

Country Link
US (1) US6593956B1 (en)
EP (1) EP1004204B1 (en)
JP (1) JP4450508B2 (en)
AU (1) AU6308799A (en)
DE (1) DE69920138T2 (en)
WO (1) WO1999060788A1 (en)

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