MX344035B - Atenuacion eficaz de los pre-ecos en una señal de audio digital. - Google Patents

Atenuacion eficaz de los pre-ecos en una señal de audio digital.

Info

Publication number
MX344035B
MX344035B MX2015007894A MX2015007894A MX344035B MX 344035 B MX344035 B MX 344035B MX 2015007894 A MX2015007894 A MX 2015007894A MX 2015007894 A MX2015007894 A MX 2015007894A MX 344035 B MX344035 B MX 344035B
Authority
MX
Mexico
Prior art keywords
sub
signals
attenuation
echo
digital audio
Prior art date
Application number
MX2015007894A
Other languages
English (en)
Other versions
MX2015007894A (es
Inventor
Kovesi Balazs
Ragot Stéphane
Original Assignee
Orange
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 Orange filed Critical Orange
Publication of MX2015007894A publication Critical patent/MX2015007894A/es
Publication of MX344035B publication Critical patent/MX344035B/es

Links

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
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/012—Comfort noise or silence coding
    • 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
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/02—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/022—Blocking, i.e. grouping of samples in time; Choice of analysis windows; Overlap factoring
    • G10L19/025—Detection of transients or attacks for time/frequency resolution switching
    • 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
    • H04B3/21—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a set of bandfilters
    • 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
    • G10L21/0316—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude
    • G10L21/0364—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude for improving intelligibility
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Stereophonic System (AREA)

Abstract

El invento se refiere a un método para tratar la atenuación de pre-eco en una señal de audio digital descodificada por descodificación por transformada. Dicho método comprende las etapas siguientes: descomposición (E603) de la señal descodificada en al menos dos sub-señales según un criterio de descomposición predeterminado; cálculo (E604) de factores de atenuación por sub-señal y por muestra de una zona de pre-eco determinada previamente; atenuación (E605) de pre-eco en la zona de pre-eco de cada una de las sub-señales por aplicación de factores de atenuación a las sub-señales; y producción (E606) de la señal atenuada por adición de las sub-señales atenuadas. El invento también se refiere a un dispositivo de tratamiento que pone en práctica las etapas del método descrito, y a un descodificador que comprende tal dispositivo.
MX2015007894A 2012-12-21 2013-12-20 Atenuacion eficaz de los pre-ecos en una señal de audio digital. MX344035B (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1262598A FR3000328A1 (fr) 2012-12-21 2012-12-21 Attenuation efficace de pre-echos dans un signal audionumerique
PCT/FR2013/053216 WO2014096733A1 (fr) 2012-12-21 2013-12-20 Atténuation efficace de pré-échos dans un signal audionumérique

Publications (2)

Publication Number Publication Date
MX2015007894A MX2015007894A (es) 2015-10-05
MX344035B true MX344035B (es) 2016-12-01

Family

ID=48289242

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2015007894A MX344035B (es) 2012-12-21 2013-12-20 Atenuacion eficaz de los pre-ecos en una señal de audio digital.

Country Status (12)

Country Link
US (1) US10170126B2 (es)
EP (1) EP2936488B1 (es)
JP (1) JP6373865B2 (es)
KR (1) KR102156846B1 (es)
CN (1) CN104981981B (es)
BR (1) BR112015014643B1 (es)
CA (1) CA2894743C (es)
ES (1) ES2612385T3 (es)
FR (1) FR3000328A1 (es)
MX (1) MX344035B (es)
RU (1) RU2622863C2 (es)
WO (1) WO2014096733A1 (es)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2992766A1 (fr) * 2012-06-29 2014-01-03 France Telecom Attenuation efficace de pre-echos dans un signal audionumerique
FR3025923A1 (fr) * 2014-09-12 2016-03-18 Orange Discrimination et attenuation de pre-echos dans un signal audionumerique
DE102017204181A1 (de) 2017-03-14 2018-09-20 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Sender zum Emittieren von Signalen und Empfänger zum Empfangen von Signalen
US10354667B2 (en) 2017-03-22 2019-07-16 Immersion Networks, Inc. System and method for processing audio data
EP3382701A1 (en) 2017-03-31 2018-10-03 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for post-processing an audio signal using prediction based shaping
EP3382700A1 (en) * 2017-03-31 2018-10-03 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for post-processing an audio signal using a transient location detection
CN110838299B (zh) * 2019-11-13 2022-03-25 腾讯音乐娱乐科技（深圳）有限公司 一种瞬态噪声的检测方法、装置及设备

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2036078C (en) * 1990-02-21 1994-07-26 Fumio Amano Sub-band acoustic echo canceller
DE19736669C1 (de) * 1997-08-22 1998-10-22 Fraunhofer Ges Forschung Verfahren und Vorrichtung zum Erfassen eines Anschlags in einem zeitdiskreten Audiosignal sowie Vorrichtung und Verfahren zum Codieren eines Audiosignals
GB2379369B (en) * 2001-08-29 2005-06-29 Zarlink Semiconductor Inc Subband echo location and double-talk detection in communication systems
JP4290917B2 (ja) * 2002-02-08 2009-07-08 株式会社エヌ・ティ・ティ・ドコモ 復号装置、符号化装置、復号方法、及び、符号化方法
CA2388352A1 (en) * 2002-05-31 2003-11-30 Voiceage Corporation A method and device for frequency-selective pitch enhancement of synthesized speed
US20070067166A1 (en) * 2003-09-17 2007-03-22 Xingde Pan Method and device of multi-resolution vector quantilization for audio encoding and decoding
RU2351024C2 (ru) * 2005-04-28 2009-03-27 Сименс Акциенгезелльшафт Способ и устройство для подавления шумов
FR2888704A1 (es) 2005-07-12 2007-01-19 France Telecom
FR2897733A1 (fr) * 2006-02-20 2007-08-24 France Telecom Procede de discrimination et d'attenuation fiabilisees des echos d'un signal numerique dans un decodeur et dispositif correspondant
EP1850573A1 (fr) * 2006-04-28 2007-10-31 France Télécom Procede de reduction d'echo d'un signal audio large bande
RU2481650C2 (ru) * 2008-09-17 2013-05-10 Франс Телеком Ослабление опережающих эхо-сигналов в цифровом звуковом сигнале

Also Published As

Publication number Publication date
ES2612385T3 (es) 2017-05-16
CN104981981A (zh) 2015-10-14
KR102156846B1 (ko) 2020-09-16
JP6373865B2 (ja) 2018-08-15
BR112015014643A2 (pt) 2021-07-13
WO2014096733A1 (fr) 2014-06-26
KR20150096483A (ko) 2015-08-24
CA2894743A1 (en) 2014-06-26
RU2622863C2 (ru) 2017-06-20
RU2015129858A (ru) 2017-01-27
US20150348561A1 (en) 2015-12-03
MX2015007894A (es) 2015-10-05
EP2936488A1 (fr) 2015-10-28
JP2016506543A (ja) 2016-03-03
CA2894743C (en) 2020-11-17
BR112015014643B1 (pt) 2022-03-22
CN104981981B (zh) 2018-03-27
FR3000328A1 (fr) 2014-06-27
EP2936488B1 (fr) 2016-11-09
US10170126B2 (en) 2019-01-01

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