MX2010009307A - Dispositivo de codificacion, dispositivo de decodificacion y metodo de los mismos. - Google Patents

Dispositivo de codificacion, dispositivo de decodificacion y metodo de los mismos.

Info

Publication number
MX2010009307A
MX2010009307A MX2010009307A MX2010009307A MX2010009307A MX 2010009307 A MX2010009307 A MX 2010009307A MX 2010009307 A MX2010009307 A MX 2010009307A MX 2010009307 A MX2010009307 A MX 2010009307A MX 2010009307 A MX2010009307 A MX 2010009307A
Authority
MX
Mexico
Prior art keywords
layer
sub
band
signal
decoding
Prior art date
Application number
MX2010009307A
Other languages
English (en)
Inventor
Masahiro Oshikiri
Tomofumi Yamanashi
Original Assignee
Panasonic 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 Panasonic Corp filed Critical Panasonic Corp
Publication of MX2010009307A publication Critical patent/MX2010009307A/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
    • 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
    • G10L21/038—Speech enhancement, e.g. noise reduction or echo cancellation using band spreading techniques
    • 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
    • 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
    • G10L19/04—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 predictive techniques
    • G10L19/16—Vocoder architecture
    • G10L19/18—Vocoders using multiple modes
    • 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
    • G10L19/04—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 predictive techniques
    • G10L19/16—Vocoder architecture
    • G10L19/18—Vocoders using multiple modes
    • G10L19/24—Variable rate codecs, e.g. for generating different qualities using a scalable representation such as hierarchical encoding or layered encoding
    • 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
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Signal Processing (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Computational Linguistics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Quality & Reliability (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

Es posible mejorar la calidad de una señal de decodificación en una extensión de banda para estimar una banda alta de una banda baja de una señal de decodificación. Una primera unidad de codificación de capa (202) codifica una porción de banda más baja por debajo de una frecuencia predeterminada de una señal de entrada para así generar la primera información codificada de capa. Una primera unidad de decodificación de capa (203) decodifica la primera información codificada de capa para así generar una primera señal de desmodulada de capa. Una segunda unidad de codificación de capa (206) divide una porción de banda alta más alta que una frecuencia predeterminada de una señal de entrada en una pluralidad de subbandas y estima cada una de la subbandas a partir de la señal de entrada o la primera señal decodificada de capa utilizando el resultado de la estimación de la subbanda adyacente al lado de la banda más baja para así generar la segunda información codificada que incluye los resultados de la estimación de las subbandas.
MX2010009307A 2008-03-14 2009-03-13 Dispositivo de codificacion, dispositivo de decodificacion y metodo de los mismos. MX2010009307A (es)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2008066202 2008-03-14
JP2008143963 2008-05-30
JP2008298091 2008-11-21
PCT/JP2009/001129 WO2009113316A1 (ja) 2008-03-14 2009-03-13 符号化装置、復号装置およびこれらの方法

Publications (1)

Publication Number Publication Date
MX2010009307A true MX2010009307A (es) 2010-09-24

Family

ID=41064989

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2010009307A MX2010009307A (es) 2008-03-14 2009-03-13 Dispositivo de codificacion, dispositivo de decodificacion y metodo de los mismos.

Country Status (9)

Country Link
US (1) US8452588B2 (es)
EP (2) EP2251861B1 (es)
JP (1) JP5449133B2 (es)
KR (1) KR101570550B1 (es)
CN (1) CN101971253B (es)
BR (1) BRPI0908929A2 (es)
MX (1) MX2010009307A (es)
RU (1) RU2483367C2 (es)
WO (1) WO2009113316A1 (es)

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EP2500901B1 (en) 2009-11-12 2018-09-19 III Holdings 12, LLC Audio encoder apparatus and audio encoding method
CN102770912B (zh) 2010-01-13 2015-06-10 沃伊斯亚吉公司 使用线性预测滤波的前向时域混叠消除
AU2011241424B2 (en) * 2010-04-14 2016-05-05 Voiceage Evs Llc Flexible and scalable combined innovation codebook for use in CELP coder and decoder
EP2581904B1 (en) * 2010-06-11 2015-10-07 Panasonic Intellectual Property Corporation of America Audio (de)coding apparatus and method
KR20130088756A (ko) * 2010-06-21 2013-08-08 파나소닉 주식회사 복호 장치, 부호화 장치 및 이러한 방법
WO2012052802A1 (en) * 2010-10-18 2012-04-26 Nokia Corporation An audio encoder/decoder apparatus
CN104934036B (zh) * 2010-11-22 2018-11-02 株式会社Ntt都科摩 音频编码装置、方法以及音频解码装置、方法
CN102610231B (zh) * 2011-01-24 2013-10-09 华为技术有限公司 一种带宽扩展方法及装置
US9418671B2 (en) * 2013-08-15 2016-08-16 Huawei Technologies Co., Ltd. Adaptive high-pass post-filter
US8879858B1 (en) * 2013-10-01 2014-11-04 Gopro, Inc. Multi-channel bit packing engine
US9786291B2 (en) * 2014-06-18 2017-10-10 Google Technology Holdings LLC Communicating information between devices using ultra high frequency audio
US10306632B2 (en) * 2014-09-30 2019-05-28 Qualcomm Incorporated Techniques for transmitting channel usage beacon signals over an unlicensed radio frequency spectrum band
EP3182411A1 (en) * 2015-12-14 2017-06-21 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for processing an encoded audio signal
US10242696B2 (en) 2016-10-11 2019-03-26 Cirrus Logic, Inc. Detection of acoustic impulse events in voice applications
US10475471B2 (en) * 2016-10-11 2019-11-12 Cirrus Logic, Inc. Detection of acoustic impulse events in voice applications using a neural network
US20180336469A1 (en) * 2017-05-18 2018-11-22 Qualcomm Incorporated Sigma-delta position derivative networks

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SE501340C2 (sv) * 1993-06-11 1995-01-23 Ericsson Telefon Ab L M Döljande av transmissionsfel i en talavkodare
JP3747492B2 (ja) * 1995-06-20 2006-02-22 ソニー株式会社 音声信号の再生方法及び再生装置
SE0001926D0 (sv) * 2000-05-23 2000-05-23 Lars Liljeryd Improved spectral translation/folding in the subband domain
JP3923783B2 (ja) 2001-11-02 2007-06-06 松下電器産業株式会社 符号化装置及び復号化装置
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JP4272897B2 (ja) * 2002-01-30 2009-06-03 パナソニック株式会社 符号化装置、復号化装置およびその方法
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KR101238239B1 (ko) * 2007-11-06 2013-03-04 노키아 코포레이션 인코더

Also Published As

Publication number Publication date
CN101971253B (zh) 2012-07-18
EP3288034B1 (en) 2019-02-20
US8452588B2 (en) 2013-05-28
RU2483367C2 (ru) 2013-05-27
EP2251861A1 (en) 2010-11-17
JP5449133B2 (ja) 2014-03-19
EP2251861A4 (en) 2014-01-15
EP3288034A1 (en) 2018-02-28
CN101971253A (zh) 2011-02-09
JPWO2009113316A1 (ja) 2011-07-21
RU2010137838A (ru) 2012-03-20
KR101570550B1 (ko) 2015-11-19
US20100332221A1 (en) 2010-12-30
BRPI0908929A2 (pt) 2016-09-13
EP2251861B1 (en) 2017-11-22
KR20100134580A (ko) 2010-12-23
WO2009113316A1 (ja) 2009-09-17

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