CN105027540B - 回波抑制 - Google Patents

回波抑制 Download PDF

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Publication number
CN105027540B
CN105027540B CN201380066893.3A CN201380066893A CN105027540B CN 105027540 B CN105027540 B CN 105027540B CN 201380066893 A CN201380066893 A CN 201380066893A CN 105027540 B CN105027540 B CN 105027540B
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CN
China
Prior art keywords
echo
audio signal
power
received
signal
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.)
Active
Application number
CN201380066893.3A
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English (en)
Chinese (zh)
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CN105027540A (zh
Inventor
P.阿格伦
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Microsoft Technology Licensing LLC
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Microsoft Technology Licensing LLC
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Publication of CN105027540A publication Critical patent/CN105027540A/zh
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Classifications

    • 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
    • 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
    • H04R3/002—Damping circuit arrangements for transducers, e.g. motional feedback circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
    • H04M9/082—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic using echo cancellers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0211—Frequency selective networks using specific transformation algorithms, e.g. WALSH functions, Fermat transforms, Mersenne transforms, polynomial transforms, Hilbert transforms
    • H03H17/0213—Frequency domain filters using Fourier transforms
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/04—Recursive filters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0245—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal according to signal strength
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Signal Processing (AREA)
  • Computer Hardware Design (AREA)
  • Acoustics & Sound (AREA)
  • Theoretical Computer Science (AREA)
  • Pure & Applied Mathematics (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Analysis (AREA)
  • General Physics & Mathematics (AREA)
  • Computing Systems (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Algebra (AREA)
  • Computational Linguistics (AREA)
  • Multimedia (AREA)
  • Human Computer Interaction (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Quality & Reliability (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Telephone Function (AREA)
CN201380066893.3A 2012-12-21 2013-12-21 回波抑制 Active CN105027540B (zh)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GB1223241.9A GB2512022A (en) 2012-12-21 2012-12-21 Echo suppression
GB1223241.9 2012-12-21
US13/784715 2013-03-04
US13/784,715 US9167342B2 (en) 2012-12-21 2013-03-04 Echo suppression
PCT/US2013/077354 WO2014100793A1 (en) 2012-12-21 2013-12-21 Echo suppression

Publications (2)

Publication Number Publication Date
CN105027540A CN105027540A (zh) 2015-11-04
CN105027540B true CN105027540B (zh) 2017-07-21

Family

ID=47682460

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201380066893.3A Active CN105027540B (zh) 2012-12-21 2013-12-21 回波抑制

Country Status (7)

Country Link
US (1) US9167342B2 (enExample)
EP (1) EP2920949B1 (enExample)
JP (1) JP6422885B2 (enExample)
KR (1) KR102169993B1 (enExample)
CN (1) CN105027540B (enExample)
GB (1) GB2512022A (enExample)
WO (1) WO2014100793A1 (enExample)

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* Cited by examiner, † Cited by third party
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GB2509493A (en) 2012-12-21 2014-07-09 Microsoft Corp Suppressing Echo in a received audio signal by estimating the echo power in the received audio signal based on an FIR filter estimate
GB2510331A (en) 2012-12-21 2014-08-06 Microsoft Corp Echo suppression in an audio signal
US9319532B2 (en) * 2013-08-15 2016-04-19 Cisco Technology, Inc. Acoustic echo cancellation for audio system with bring your own devices (BYOD)
US10811027B2 (en) 2016-06-08 2020-10-20 Dolby Laboratories Licensing Corporation Echo estimation and management with adaptation of sparse prediction filter set
US10816584B2 (en) * 2017-12-04 2020-10-27 Ets-Lindgren, Inc. Spectrum extension edgeless gating for reduced time domain gating edge errors
KR102218742B1 (ko) * 2020-08-12 2021-02-22 (주)오즈디에스피 적응형 지연 다이버시티 필터와, 이를 이용하는 에코 제거 장치 및 방법
EP4199368B1 (en) 2020-08-12 2025-08-20 Auzdsp Co., Ltd. Adaptive delay diversity filter and method using same
CN113178203B (zh) * 2021-04-23 2022-11-04 歌尔股份有限公司 一种回声消除方法、系统、音频设备及可读存储介质

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JP2009021741A (ja) * 2007-07-11 2009-01-29 Yamaha Corp エコーキャンセラ
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Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004064365A1 (en) * 2003-01-08 2004-07-29 Philips Intellectual Property & Standards Gmbh Device and method for suppressing echo, in particular in telephones
JP2009021741A (ja) * 2007-07-11 2009-01-29 Yamaha Corp エコーキャンセラ
CN202340252U (zh) * 2011-11-18 2012-07-18 镁思锑科技（杭州）有限公司 具有回声和噪声消除功能的矿用通信手机

Also Published As

Publication number Publication date
US20140177858A1 (en) 2014-06-26
US9167342B2 (en) 2015-10-20
EP2920949A1 (en) 2015-09-23
JP2016506673A (ja) 2016-03-03
EP2920949B1 (en) 2017-02-01
GB2512022A (en) 2014-09-24
CN105027540A (zh) 2015-11-04
KR102169993B1 (ko) 2020-10-26
JP6422885B2 (ja) 2018-11-14
GB201223241D0 (en) 2013-02-06
KR20150096424A (ko) 2015-08-24
WO2014100793A1 (en) 2014-06-26

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