IN2015MN00088A - - Google Patents

Info

Publication number
IN2015MN00088A
IN2015MN00088A IN88MUN2015A IN2015MN00088A IN 2015MN00088 A IN2015MN00088 A IN 2015MN00088A IN 88MUN2015 A IN88MUN2015 A IN 88MUN2015A IN 2015MN00088 A IN2015MN00088 A IN 2015MN00088A
Authority
IN
India
Prior art keywords
reference signal
audio signals
runtime
echo
audio signal
Prior art date
Application number
Inventor
Asif I Mohammad
Lae Hoon Kim
Erik Visser
Original Assignee
Qualcomm Inc
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 Qualcomm Inc filed Critical Qualcomm Inc
Publication of IN2015MN00088A publication Critical patent/IN2015MN00088A/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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
    • 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
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208—Noise filtering
    • G10L2021/02082—Noise filtering the noise being echo, reverberation of the speech
    • 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
    • H04R2430/23—Direction finding using a sum-delay beam-former

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Telephone Function (AREA)

Abstract

A method for echo reduction by an electronic device is described. The method includes nulling at least one speaker. The method also includes mixing a set of runtime audio signals based on a set of acoustic paths to determine a reference signal. The method also includes receiving at least one composite audio signal that is based on the set of runtime audio signals. The method further includes reducing echo in the at least one composite audio signal based on the reference signal.
IN88MUN2015 2012-07-02 2013-07-02 IN2015MN00088A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US201261667249P 2012-07-02 2012-07-02
US201261681474P 2012-08-09 2012-08-09
US201261739662P 2012-12-19 2012-12-19
US13/933,005 US9497544B2 (en) 2012-07-02 2013-07-01 Systems and methods for surround sound echo reduction
PCT/US2013/049055 WO2014008253A1 (en) 2012-07-02 2013-07-02 Systems and methods for surround sound echo reduction

Publications (1)

Publication Number Publication Date
IN2015MN00088A true IN2015MN00088A (en) 2015-10-16

Family

ID=49778196

Family Applications (1)

Application Number Title Priority Date Filing Date
IN88MUN2015 IN2015MN00088A (en) 2012-07-02 2013-07-02

Country Status (5)

Country Link
US (1) US9497544B2 (en)
EP (1) EP2868117B1 (en)
CN (1) CN104429100B (en)
IN (1) IN2015MN00088A (en)
WO (1) WO2014008253A1 (en)

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Also Published As

Publication number Publication date
CN104429100B (en) 2019-02-26
US9497544B2 (en) 2016-11-15
EP2868117A1 (en) 2015-05-06
WO2014008253A1 (en) 2014-01-09
EP2868117B1 (en) 2017-11-15
US20140003611A1 (en) 2014-01-02
CN104429100A (en) 2015-03-18

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