MX2009004639A - Dispositivo y metodo para tratamiento posterior de valores espectrales y codificador y decodificador para señales de audio. - Google Patents
Dispositivo y metodo para tratamiento posterior de valores espectrales y codificador y decodificador para señales de audio.Info
- Publication number
- MX2009004639A MX2009004639A MX2009004639A MX2009004639A MX2009004639A MX 2009004639 A MX2009004639 A MX 2009004639A MX 2009004639 A MX2009004639 A MX 2009004639A MX 2009004639 A MX2009004639 A MX 2009004639A MX 2009004639 A MX2009004639 A MX 2009004639A
- Authority
- MX
- Mexico
- Prior art keywords
- spectral values
- spectral
- blocks
- sequence
- post processed
- Prior art date
Links
- 230000003595 spectral effect Effects 0.000 title abstract 14
- 230000005236 sound signal Effects 0.000 title abstract 4
- 238000012805 post-processing Methods 0.000 title abstract 2
- 238000000034 method Methods 0.000 title 1
- 230000009466 transformation Effects 0.000 abstract 3
- 230000015572 biosynthetic process Effects 0.000 abstract 1
Classifications
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- 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
- G10L19/26—Pre-filtering or post-filtering
-
- 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
- G10L19/0017—Lossless audio signal coding; Perfect reconstruction of coded audio signal by transmission of coding error
-
- 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
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- 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
- 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
- G10L19/26—Pre-filtering or post-filtering
- G10L19/265—Pre-filtering, e.g. high frequency emphasis prior to encoding
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)
- Theoretical Computer Science (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Error Detection And Correction (AREA)
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
Abstract
Para el tratamiento posterior de valores espectrales que se basan en un primer algoritmo de transformación para convertir la señal de audio en una representación espectral, en primer lugar, se proporciona una secuencia de bloques de los valores espectrales que representan una secuencia de bloques de muestras de la señal de audio. En ese momento, se lleva a cabo una adición ponderada de valores espectrales de la secuencia de bloques de valores espectrales a fin de obtener una secuencia de bloques de valores espectrales con procesamiento posterior, donde la combinación se lleva a cabo tal, que para calcular un valor espectral con procesamiento posterior para una banda de frecuencia y un período de tiempo, se usen un valor espectral de la secuencia de bloques para la banda de frecuencia y el período de tiempo y un valor espectral para otra banda de frecuencia u otro período de tiempo, donde la combinación es llevada a cabo adicionalmente de tal modo, que los factores de ponderación se usan de modo que los valores espectrales con procesamiento posterior sean una aproximación a los valores espectrales cuando se obtienen en una conversión de la señal de audio en una representación espectral usando un segundo algoritmo de transformación que sea diferente al primer algoritmo de transformación. Los valores espectrales con procesamiento posterior se usan particularmente para una formación diferencial dentro de un codificador escalable o para una adición dentro de un decodificador escalable, respectivamente.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006051673A DE102006051673A1 (de) | 2006-11-02 | 2006-11-02 | Vorrichtung und Verfahren zum Nachbearbeiten von Spektralwerten und Encodierer und Decodierer für Audiosignale |
PCT/EP2007/008477 WO2008052627A1 (en) | 2006-11-02 | 2007-09-28 | Device and method for postprocessing spectral values and encoder and decoder for audio signals |
Publications (1)
Publication Number | Publication Date |
---|---|
MX2009004639A true MX2009004639A (es) | 2009-06-26 |
Family
ID=38962597
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MX2009004639A MX2009004639A (es) | 2006-11-02 | 2007-09-28 | Dispositivo y metodo para tratamiento posterior de valores espectrales y codificador y decodificador para señales de audio. |
Country Status (22)
Country | Link |
---|---|
US (1) | US8321207B2 (es) |
EP (2) | EP1964111B1 (es) |
JP (1) | JP5301451B2 (es) |
KR (1) | KR101090541B1 (es) |
CN (1) | CN101553870B (es) |
AT (1) | ATE489703T1 (es) |
AU (2) | AU2007315373B2 (es) |
BR (1) | BRPI0716308B1 (es) |
CA (1) | CA2668056C (es) |
DE (2) | DE102006051673A1 (es) |
ES (2) | ES2354743T3 (es) |
HK (1) | HK1120328A1 (es) |
IL (1) | IL198192A (es) |
MX (1) | MX2009004639A (es) |
MY (2) | MY181471A (es) |
NO (2) | NO341615B1 (es) |
PL (2) | PL2264699T3 (es) |
PT (1) | PT2264699T (es) |
RU (1) | RU2423740C2 (es) |
TR (1) | TR201903942T4 (es) |
TW (1) | TWI350068B (es) |
WO (1) | WO2008052627A1 (es) |
Families Citing this family (20)
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KR101016224B1 (ko) * | 2006-12-12 | 2011-02-25 | 프라운호퍼-게젤샤프트 추르 푀르데룽 데어 안제반텐 포르슝 에 파우 | 인코더, 디코더 및 시간 영역 데이터 스트림을 나타내는 데이터 세그먼트를 인코딩하고 디코딩하는 방법 |
EP2099027A1 (en) * | 2008-03-05 | 2009-09-09 | Deutsche Thomson OHG | Method and apparatus for transforming between different filter bank domains |
ES2401487T3 (es) * | 2008-07-11 | 2013-04-22 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Aparato y procedimiento para la codificación/decodificación de una señal de audio utilizando un esquema de conmutación de generación de señal ajena |
TR201903388T4 (tr) | 2011-02-14 | 2019-04-22 | Fraunhofer Ges Forschung | Bir ses sinyalinin parçalarının darbe konumlarının şifrelenmesi ve çözülmesi. |
MY165853A (en) | 2011-02-14 | 2018-05-18 | Fraunhofer Ges Forschung | Linear prediction based coding scheme using spectral domain noise shaping |
EP2676270B1 (en) | 2011-02-14 | 2017-02-01 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Coding a portion of an audio signal using a transient detection and a quality result |
EP2676268B1 (en) | 2011-02-14 | 2014-12-03 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Apparatus and method for processing a decoded audio signal in a spectral domain |
TWI483245B (zh) * | 2011-02-14 | 2015-05-01 | Fraunhofer Ges Forschung | 利用重疊變換之資訊信號表示技術 |
WO2012146757A1 (en) * | 2011-04-28 | 2012-11-01 | Dolby International Ab | Efficient content classification and loudness estimation |
EP2860729A4 (en) * | 2012-06-04 | 2016-03-02 | Samsung Electronics Co Ltd | METHOD AND DEVICE FOR AUDIO CODING, METHOD AND DEVICE FOR AUDIO DECODING, AND MULTIMEDIA DEVICE EMPLOYING THEM |
BR112015019543B1 (pt) | 2013-02-20 | 2022-01-11 | Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. | Aparelho para codificar um sinal de áudio, descodificador para descodificar um sinal de áudio, método para codificar e método para descodificar um sinal de áudio |
EP2830058A1 (en) * | 2013-07-22 | 2015-01-28 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Frequency-domain audio coding supporting transform length switching |
CN105556600B (zh) | 2013-08-23 | 2019-11-26 | 弗劳恩霍夫应用研究促进协会 | 用于混迭误差信号来处理音频信号的装置及方法 |
ES2716652T3 (es) | 2013-11-13 | 2019-06-13 | Fraunhofer Ges Forschung | Codificador para la codificación de una señal de audio, sistema de transmisión de audio y procedimiento para la determinación de valores de corrección |
EP3155617B1 (en) * | 2014-06-10 | 2022-01-05 | MQA Limited | Digital encapsulation of audio signals |
CA2987808C (en) * | 2016-01-22 | 2020-03-10 | Guillaume Fuchs | Apparatus and method for encoding or decoding an audio multi-channel signal using spectral-domain resampling |
US10349085B2 (en) | 2016-02-15 | 2019-07-09 | Qualcomm Incorporated | Efficient parameter storage for compact multi-pass transforms |
US10448053B2 (en) * | 2016-02-15 | 2019-10-15 | Qualcomm Incorporated | Multi-pass non-separable transforms for video coding |
US10390048B2 (en) | 2016-02-15 | 2019-08-20 | Qualcomm Incorporated | Efficient transform coding using optimized compact multi-pass transforms |
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 |
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DE59008047D1 (de) * | 1989-03-06 | 1995-02-02 | Bosch Gmbh Robert | Verfahren zur Datenreduktion bei digitalen Tonsignalen und zur genäherten Rückgewinnung der digitalen Tonsignale. |
SE9700772D0 (sv) | 1997-03-03 | 1997-03-03 | Ericsson Telefon Ab L M | A high resolution post processing method for a speech decoder |
US6131084A (en) * | 1997-03-14 | 2000-10-10 | Digital Voice Systems, Inc. | Dual subframe quantization of spectral magnitudes |
DE69944788C5 (de) | 1998-04-09 | 2023-10-19 | Koninklijke Philips N.V. | Verlustfreie kodierung/dekodierung in einem übertragungssystem |
WO1999062189A2 (en) | 1998-05-27 | 1999-12-02 | Microsoft Corporation | System and method for masking quantization noise of audio signals |
JP4263412B2 (ja) * | 2002-01-29 | 2009-05-13 | 富士通株式会社 | 音声符号変換方法 |
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JP4292767B2 (ja) * | 2002-09-03 | 2009-07-08 | ソニー株式会社 | データレート変換方法及びデータレート変換装置 |
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EP1939863A3 (en) * | 2003-10-10 | 2008-07-16 | Agency for Science, Technology and Research | Method for encoding a digital signal into a scalable bitstream; method for decoding a scalable bitstream |
DE102004021403A1 (de) | 2004-04-30 | 2005-11-24 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Informationssignalverarbeitung durch Modifikation in der Spektral-/Modulationsspektralbereichsdarstellung |
EP1758099A1 (en) * | 2004-04-30 | 2007-02-28 | Matsushita Electric Industrial Co., Ltd. | Scalable decoder and expanded layer disappearance hiding method |
US8843378B2 (en) * | 2004-06-30 | 2014-09-23 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Multi-channel synthesizer and method for generating a multi-channel output signal |
EP1883067A1 (en) * | 2006-07-24 | 2008-01-30 | Deutsche Thomson-Brandt Gmbh | Method and apparatus for lossless encoding of a source signal, using a lossy encoded data stream and a lossless extension data stream |
EP1903559A1 (en) * | 2006-09-20 | 2008-03-26 | Deutsche Thomson-Brandt Gmbh | Method and device for transcoding audio signals |
JP2010506207A (ja) * | 2006-10-06 | 2010-02-25 | エージェンシー フォー サイエンス,テクノロジー アンド リサーチ | エンコード方法、デコード方法、エンコーダ、デコーダ、及びコンピュータプログラム製品 |
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2006
- 2006-11-02 DE DE102006051673A patent/DE102006051673A1/de not_active Ceased
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2007
- 2007-09-28 BR BRPI0716308-8A patent/BRPI0716308B1/pt active IP Right Grant
- 2007-09-28 MY MYPI2015002126A patent/MY181471A/en unknown
- 2007-09-28 KR KR1020097009139A patent/KR101090541B1/ko active IP Right Grant
- 2007-09-28 MX MX2009004639A patent/MX2009004639A/es active IP Right Grant
- 2007-09-28 ES ES07818557T patent/ES2354743T3/es active Active
- 2007-09-28 TR TR2019/03942T patent/TR201903942T4/tr unknown
- 2007-09-28 AU AU2007315373A patent/AU2007315373B2/en active Active
- 2007-09-28 RU RU2009117571/09A patent/RU2423740C2/ru active
- 2007-09-28 JP JP2009534996A patent/JP5301451B2/ja active Active
- 2007-09-28 DE DE602007010721T patent/DE602007010721D1/de active Active
- 2007-09-28 ES ES10173938T patent/ES2720871T3/es active Active
- 2007-09-28 PT PT10173938T patent/PT2264699T/pt unknown
- 2007-09-28 EP EP07818557A patent/EP1964111B1/en active Active
- 2007-09-28 CA CA2668056A patent/CA2668056C/en active Active
- 2007-09-28 US US12/446,772 patent/US8321207B2/en active Active
- 2007-09-28 PL PL10173938T patent/PL2264699T3/pl unknown
- 2007-09-28 PL PL07818557T patent/PL1964111T3/pl unknown
- 2007-09-28 MY MYPI20091684A patent/MY156427A/en unknown
- 2007-09-28 EP EP10173938.1A patent/EP2264699B1/en active Active
- 2007-09-28 CN CN2007800403496A patent/CN101553870B/zh active Active
- 2007-09-28 WO PCT/EP2007/008477 patent/WO2008052627A1/en active Application Filing
- 2007-09-28 AT AT07818557T patent/ATE489703T1/de not_active IP Right Cessation
- 2007-10-23 TW TW096139650A patent/TWI350068B/zh active
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2008
- 2008-12-10 HK HK08113440.1A patent/HK1120328A1/xx unknown
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2009
- 2009-04-19 IL IL198192A patent/IL198192A/en active IP Right Grant
- 2009-05-29 NO NO20092125A patent/NO341615B1/no unknown
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2011
- 2011-02-07 AU AU2011200509A patent/AU2011200509B2/en active Active
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2017
- 2017-07-14 NO NO20171179A patent/NO343261B1/no unknown
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