WO2008143142A1 - Sound source localization device, sound source localization method, and program - Google Patents

Sound source localization device, sound source localization method, and program Download PDF

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Publication number
WO2008143142A1
WO2008143142A1 PCT/JP2008/058971 JP2008058971W WO2008143142A1 WO 2008143142 A1 WO2008143142 A1 WO 2008143142A1 JP 2008058971 W JP2008058971 W JP 2008058971W WO 2008143142 A1 WO2008143142 A1 WO 2008143142A1
Authority
WO
WIPO (PCT)
Prior art keywords
direction data
sound source
frequency components
section
source localization
Prior art date
Application number
PCT/JP2008/058971
Other languages
French (fr)
Japanese (ja)
Inventor
Nobutaka Nakamura
Original Assignee
Tokyo Electron Device Limited
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 Tokyo Electron Device Limited filed Critical Tokyo Electron Device Limited
Priority to JP2009515195A priority Critical patent/JPWO2008143142A1/en
Publication of WO2008143142A1 publication Critical patent/WO2008143142A1/en

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
    • 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
    • G01S3/8006—Multi-channel systems specially adapted for direction-finding, i.e. having a single aerial system capable of giving simultaneous indications of the directions of different signals
    • 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
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/06—Transformation of speech into a non-audible representation, e.g. speech visualisation or speech processing for tactile aids
    • G10L2021/065—Aids for the handicapped in understanding
    • 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
    • H04R2201/401—2D or 3D arrays of transducers
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • General Health & Medical Sciences (AREA)
  • Stereophonic System (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

A single channel direction detecting section (13) creates the direction data of each channel from a pair of sets of sound source data (E12) corresponding to the channels while switching between the channels and outputs it as channel-specific direction data (E13) to an FFT section (14). The FFT section (14) links the channel-specific direction data (E13), Fourier-transforms data regarded as time-series direction data, and finds direction data frequency components (E14). A filter section (15) outputs the components in which frequency components of an even harmonic out of the direction data frequency components (E14) are suppressed as filtered direction data frequency components (E15). An IFFT section (16) inverse Fourier-transforms the filtered direction data frequency components (E15) to find filtered direction data (E16). A sound source localization section (17) finds the direction of the sound source from the filtered direction data (E16).
PCT/JP2008/058971 2007-05-18 2008-05-15 Sound source localization device, sound source localization method, and program WO2008143142A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009515195A JPWO2008143142A1 (en) 2007-05-18 2008-05-15 Sound source localization apparatus, sound source localization method, and program

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007133329 2007-05-18
JP2007-133329 2007-05-18

Publications (1)

Publication Number Publication Date
WO2008143142A1 true WO2008143142A1 (en) 2008-11-27

Family

ID=40031848

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/058971 WO2008143142A1 (en) 2007-05-18 2008-05-15 Sound source localization device, sound source localization method, and program

Country Status (2)

Country Link
JP (1) JPWO2008143142A1 (en)
WO (1) WO2008143142A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010139330A (en) * 2008-12-10 2010-06-24 Clarion Co Ltd Following distance detection device and vehicle speed control system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09189599A (en) * 1996-01-09 1997-07-22 H & B Syst:Kk Method and apparatus for filtering treatment of superposed waves
JPH1152977A (en) * 1997-07-31 1999-02-26 Toshiba Corp Method and device for voice processing
JP2000111630A (en) * 1998-10-06 2000-04-21 Alps Electric Co Ltd Radio wave incoming direction inferring method and its device
JP2006284356A (en) * 2005-03-31 2006-10-19 Ministry Of Public Management Home Affairs Posts & Telecommunications Radio holography radio source survey device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09189599A (en) * 1996-01-09 1997-07-22 H & B Syst:Kk Method and apparatus for filtering treatment of superposed waves
JPH1152977A (en) * 1997-07-31 1999-02-26 Toshiba Corp Method and device for voice processing
JP2000111630A (en) * 1998-10-06 2000-04-21 Alps Electric Co Ltd Radio wave incoming direction inferring method and its device
JP2006284356A (en) * 2005-03-31 2006-10-19 Ministry Of Public Management Home Affairs Posts & Telecommunications Radio holography radio source survey device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010139330A (en) * 2008-12-10 2010-06-24 Clarion Co Ltd Following distance detection device and vehicle speed control system

Also Published As

Publication number Publication date
JPWO2008143142A1 (en) 2010-08-05

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