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MX2012002741A - Codificacion de señales de audio utilizando reduccion de redundancia entre caales y temporal. - Google Patents

Codificacion de señales de audio utilizando reduccion de redundancia entre caales y temporal.

Info

Publication number
MX2012002741A
MX2012002741A MX2012002741A MX2012002741A MX2012002741A MX 2012002741 A MX2012002741 A MX 2012002741A MX 2012002741 A MX2012002741 A MX 2012002741A MX 2012002741 A MX2012002741 A MX 2012002741A MX 2012002741 A MX2012002741 A MX 2012002741A
Authority
MX
Mexico
Prior art keywords
block
band
audio signal
interchannel
energy
Prior art date
Application number
MX2012002741A
Other languages
English (en)
Inventor
Nandury V Kishore
Original Assignee
Sling Media Pvt Ltd
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 Sling Media Pvt Ltd filed Critical Sling Media Pvt Ltd
Publication of MX2012002741A publication Critical patent/MX2012002741A/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
    • 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
    • G10L19/02—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
    • G10L19/0212—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 using orthogonal transformation
    • 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
    • G10L19/032—Quantisation or dequantisation of spectral components

Landscapes

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

Abstract

Se presenta un método para codificar una señal de domino de tiempo. Un dispositivo transforma la seña de dominio de tiempo en una señal de dominio de frecuencia incluyendo una secuencia de bloques de muestras en donde cada bloque incluye un coeficiente para cada una de múltiples frecuencias. Los coeficientes de cada bloque están agrupados en bandas de frecuencia. Para cada banda de frecuencia de cada bloque se estima un factor de escala para la banda y la energía de la banda apara el bloque se compara con la energía de la banda de un bloque de muestras adyacente. En donde los bloques pueden ser adyacentes entre sí en cualquiera o ambos de un sentido entre canales y temporal. Si la proporción de la energía de banda ara el primer bloque a la energía de banda para el bloque adyacente es menor que algún valor, el factor de escala de la banda para el primer bloque aumenta. Los coeficientes de la banda para cada bloque se cuantifican en base al factor de escala resultante. La señal de audio codificada se genera en base a los coeficientes cuantificados y los factores de escala.
MX2012002741A 2009-09-11 2010-09-07 Codificacion de señales de audio utilizando reduccion de redundancia entre caales y temporal. MX2012002741A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12/558,048 US8498874B2 (en) 2009-09-11 2009-09-11 Audio signal encoding employing interchannel and temporal redundancy reduction
PCT/IN2010/000595 WO2011030354A2 (en) 2009-09-11 2010-09-07 Audio signal encoding employing interchannel and temporal redundancy reduction

Publications (1)

Publication Number Publication Date
MX2012002741A true MX2012002741A (es) 2012-05-08

Family

ID=43568372

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2012002741A MX2012002741A (es) 2009-09-11 2010-09-07 Codificacion de señales de audio utilizando reduccion de redundancia entre caales y temporal.

Country Status (13)

Country Link
US (2) US8498874B2 (es)
EP (1) EP2476114B1 (es)
JP (1) JP5201375B2 (es)
KR (1) KR101363206B1 (es)
CN (1) CN102483924B (es)
AU (1) AU2010293792B2 (es)
BR (1) BR112012005014B1 (es)
CA (1) CA2771886C (es)
IL (1) IL218409A (es)
MX (1) MX2012002741A (es)
SG (1) SG178851A1 (es)
TW (1) TWI438770B (es)
WO (1) WO2011030354A2 (es)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8498874B2 (en) 2009-09-11 2013-07-30 Sling Media Pvt Ltd Audio signal encoding employing interchannel and temporal redundancy reduction
GB2487399B (en) * 2011-01-20 2014-06-11 Canon Kk Acoustical synthesis
EP2709106A1 (en) 2012-09-17 2014-03-19 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for generating a bandwidth extended signal from a bandwidth limited audio signal
WO2014128275A1 (en) 2013-02-21 2014-08-28 Dolby International Ab Methods for parametric multi-channel encoding
SG11201602234YA (en) 2013-12-02 2016-05-30 Huawei Tech Co Ltd Encoding method and apparatus
CN106409303B (zh) 2014-04-29 2019-09-20 华为技术有限公司 处理信号的方法及设备
CN106448688B (zh) 2014-07-28 2019-11-05 华为技术有限公司 音频编码方法及相关装置

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US5388181A (en) * 1990-05-29 1995-02-07 Anderson; David J. Digital audio compression system
DE69428030T2 (de) * 1993-06-30 2002-05-29 Sony Corp., Tokio/Tokyo Digitales signalkodierungsgerät, dazugehöriges dekodiergerät und aufzeichnungsträger
EP0692880B1 (en) * 1993-11-04 2001-09-26 Sony Corporation Signal encoder, signal decoder, recording medium and signal encoding method
JP3186412B2 (ja) * 1994-04-01 2001-07-11 ソニー株式会社 情報符号化方法、情報復号化方法、及び情報伝送方法
JP4152192B2 (ja) 2001-04-13 2008-09-17 ドルビー・ラボラトリーズ・ライセンシング・コーポレーション オーディオ信号の高品質タイムスケーリング及びピッチスケーリング
US8019598B2 (en) * 2002-11-15 2011-09-13 Texas Instruments Incorporated Phase locking method for frequency domain time scale modification based on a bark-scale spectral partition
JP4168976B2 (ja) * 2004-05-28 2008-10-22 ソニー株式会社 オーディオ信号符号化装置及び方法
EP1921606B1 (en) * 2005-09-02 2011-10-19 Panasonic Corporation Energy shaping device and energy shaping method
CN100459436C (zh) * 2005-09-16 2009-02-04 北京中星微电子有限公司 一种音频编码中比特分配的方法
JPWO2007088853A1 (ja) * 2006-01-31 2009-06-25 パナソニック株式会社 音声符号化装置、音声復号装置、音声符号化システム、音声符号化方法及び音声復号方法
JP4649351B2 (ja) * 2006-03-09 2011-03-09 シャープ株式会社 デジタルデータ復号化装置
CN101790757B (zh) 2007-08-27 2012-05-30 爱立信电话股份有限公司 语音与音频信号的改进的变换编码
CA2711047C (en) * 2007-12-31 2015-08-04 Lg Electronics Inc. A method and an apparatus for processing an audio signal
KR101317813B1 (ko) * 2008-03-31 2013-10-15 (주)트란소노 노이지 음성 신호의 처리 방법과 이를 위한 장치 및 컴퓨터판독 가능한 기록매체
US8498874B2 (en) 2009-09-11 2013-07-30 Sling Media Pvt Ltd Audio signal encoding employing interchannel and temporal redundancy reduction

Also Published As

Publication number Publication date
AU2010293792A1 (en) 2012-03-29
CN102483924B (zh) 2014-05-28
EP2476114A2 (en) 2012-07-18
US20110066440A1 (en) 2011-03-17
AU2010293792B2 (en) 2014-03-06
TW201137863A (en) 2011-11-01
US9646615B2 (en) 2017-05-09
WO2011030354A2 (en) 2011-03-17
KR20120070578A (ko) 2012-06-29
JP2013504781A (ja) 2013-02-07
KR101363206B1 (ko) 2014-02-12
SG178851A1 (en) 2012-04-27
CA2771886A1 (en) 2011-03-17
BR112012005014B1 (pt) 2021-04-13
CN102483924A (zh) 2012-05-30
TWI438770B (zh) 2014-05-21
JP5201375B2 (ja) 2013-06-05
CA2771886C (en) 2015-07-07
US8498874B2 (en) 2013-07-30
WO2011030354A3 (en) 2011-05-05
IL218409A (en) 2016-08-31
EP2476114B1 (en) 2013-06-19
US20130318010A1 (en) 2013-11-28
BR112012005014A2 (pt) 2016-05-03
IL218409A0 (en) 2012-04-30

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