MX2012010439A - Decodificador de señales de audio, codificador de señales de audio, metodo para decodificar una señal de audio, metodo para codificar una señal de audio y programa de computacion que utilizan una adaptacion dependiente de la frecuencia de un contexto de codificacion. - Google Patents
Decodificador de señales de audio, codificador de señales de audio, metodo para decodificar una señal de audio, metodo para codificar una señal de audio y programa de computacion que utilizan una adaptacion dependiente de la frecuencia de un contexto de codificacion.Info
- Publication number
- MX2012010439A MX2012010439A MX2012010439A MX2012010439A MX2012010439A MX 2012010439 A MX2012010439 A MX 2012010439A MX 2012010439 A MX2012010439 A MX 2012010439A MX 2012010439 A MX2012010439 A MX 2012010439A MX 2012010439 A MX2012010439 A MX 2012010439A
- Authority
- MX
- Mexico
- Prior art keywords
- audio signal
- context
- decoder
- time
- representation
- Prior art date
Links
- 230000005236 sound signal Effects 0.000 title abstract 10
- 238000000034 method Methods 0.000 title 2
- 230000006978 adaptation Effects 0.000 title 1
- 238000004590 computer program Methods 0.000 title 1
- 230000001419 dependent effect Effects 0.000 title 1
- 230000003595 spectral effect Effects 0.000 abstract 7
- 238000001228 spectrum Methods 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
- G10L19/022—Blocking, i.e. grouping of samples in time; Choice of analysis windows; Overlap factoring
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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
- 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
- G10L21/04—Time compression or expansion
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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
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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
- 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
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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
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/90—Pitch determination of speech signals
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (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)
- Spectroscopy & Molecular Physics (AREA)
- Quality & Reliability (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
Un decodificador de señales de audio (150 para producir una representación de señal de audio decodificada (154) sobre la base de una representación de señal de audio codificada (152) que comprende una representación de espectro codificado (ac_spectral_data[]) y una información de distorsión de tiempo codificada (tw_data[]) comprende un decodificador de valores espectrales basado en el contexto (160) configurado para decodificar una palabra en código (acod_m) que describe uno o más valores espectrales o por lo menos una porción (m) de una representación numérica de uno o más valores espectrales dependiendo de un estado del contexto, para obtener valores espectrales decodificados (162, 297, x ac_dec[]). El decodificador de señales de audio también comprende un determinador de estado del contexto (170) configurado para determinar un estado actual del contexto (164, c) dependiendo de uno o más valores espectrales anteriormente decodificados (162, 297). El decodificador de señales de audio también comprende un convertidor del dominio de la frecuencia al dominio del tiempo con distorsión de tiempo (180) configurado para generar una representación en el dominio del tiempo con distorsión de tiempo (182) de un cuadro de audio dado sobre la base de una serie de valores espectrales decodificados (162) asociados al cuadro de audio dado y provistos por el decodificador de valores espectrales basado en el contexto y dependiendo de la información de distorsión de tiempo. El determinador del estado del contexto (170) está configurado para adaptar la determinación del estado del contexto a un cambio de una frecuencia fundamental entre los cuadros de audio subsiguientes. Un codificador de señales de audio aplica un concepto comparable.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US31250310P | 2010-03-10 | 2010-03-10 | |
| PCT/EP2011/053541 WO2011110594A1 (en) | 2010-03-10 | 2011-03-09 | Audio signal decoder, audio signal encoder, method for decoding an audio signal, method for encoding an audio signal and computer program using a pitch-dependent adaptation of a coding context |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| MX2012010439A true MX2012010439A (es) | 2013-04-29 |
Family
ID=43829343
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MX2012010439A MX2012010439A (es) | 2010-03-10 | 2011-03-09 | Decodificador de señales de audio, codificador de señales de audio, metodo para decodificar una señal de audio, metodo para codificar una señal de audio y programa de computacion que utilizan una adaptacion dependiente de la frecuencia de un contexto de codificacion. |
| MX2012010469A MX2012010469A (es) | 2010-03-10 | 2011-03-09 | Decodificador de señales de audio, codificador de señales de audio, metodos y programa de computacion que utiliza tasa de muestreo dependiente de la codificacion del contorno de distorsion en el tiempo. |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MX2012010469A MX2012010469A (es) | 2010-03-10 | 2011-03-09 | Decodificador de señales de audio, codificador de señales de audio, metodos y programa de computacion que utiliza tasa de muestreo dependiente de la codificacion del contorno de distorsion en el tiempo. |
Country Status (15)
| Country | Link |
|---|---|
| US (2) | US9129597B2 (es) |
| EP (2) | EP2539893B1 (es) |
| JP (2) | JP5625076B2 (es) |
| KR (2) | KR101445296B1 (es) |
| CN (2) | CN102884573B (es) |
| AR (2) | AR080396A1 (es) |
| AU (2) | AU2011226140B2 (es) |
| BR (2) | BR112012022741B1 (es) |
| CA (2) | CA2792504C (es) |
| ES (2) | ES2461183T3 (es) |
| MX (2) | MX2012010439A (es) |
| PL (2) | PL2532001T3 (es) |
| RU (2) | RU2607264C2 (es) |
| TW (2) | TWI441170B (es) |
| WO (2) | WO2011110591A1 (es) |
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| US8924222B2 (en) * | 2010-07-30 | 2014-12-30 | Qualcomm Incorporated | Systems, methods, apparatus, and computer-readable media for coding of harmonic signals |
| US9208792B2 (en) | 2010-08-17 | 2015-12-08 | Qualcomm Incorporated | Systems, methods, apparatus, and computer-readable media for noise injection |
| CN103035249B (zh) * | 2012-11-14 | 2015-04-08 | 北京理工大学 | 一种基于时频平面上下文的音频算术编码方法 |
| US9466305B2 (en) | 2013-05-29 | 2016-10-11 | Qualcomm Incorporated | Performing positional analysis to code spherical harmonic coefficients |
| US9769586B2 (en) | 2013-05-29 | 2017-09-19 | Qualcomm Incorporated | Performing order reduction with respect to higher order ambisonic coefficients |
| SG10201708531PA (en) | 2013-06-21 | 2017-12-28 | Fraunhofer Ges Forschung | Time Scaler, Audio Decoder, Method and a Computer Program using a Quality Control |
| MX352748B (es) | 2013-06-21 | 2017-12-06 | Fraunhofer Ges Forschung | Control de búfer de variabilidad, decodificador de audio, método y programa de computadora. |
| BR112016007515B1 (pt) * | 2013-10-18 | 2021-11-16 | Telefonaktiebolaget Lm Ericsson (Publ) | Método de codificação de segmento de sinal de áudio, codificador de segmento de sinal de áudio, e, terminal de usuário. |
| KR101831289B1 (ko) * | 2013-10-18 | 2018-02-22 | 프라운호퍼 게젤샤프트 쭈르 푀르데룽 데어 안겐반텐 포르슝 에.베. | 오디오 신호의 스펙트럼의 스펙트럼 계수들의 코딩 |
| FR3015754A1 (fr) * | 2013-12-20 | 2015-06-26 | Orange | Re-echantillonnage d'un signal audio cadence a une frequence d'echantillonnage variable selon la trame |
| US9922656B2 (en) | 2014-01-30 | 2018-03-20 | Qualcomm Incorporated | Transitioning of ambient higher-order ambisonic coefficients |
| US9489955B2 (en) | 2014-01-30 | 2016-11-08 | Qualcomm Incorporated | Indicating frame parameter reusability for coding vectors |
| PL3117432T3 (pl) * | 2014-03-14 | 2019-10-31 | Ericsson Telefon Ab L M | Sposób i aparatura do kodowania audio |
| US9620137B2 (en) | 2014-05-16 | 2017-04-11 | Qualcomm Incorporated | Determining between scalar and vector quantization in higher order ambisonic coefficients |
| US9852737B2 (en) | 2014-05-16 | 2017-12-26 | Qualcomm Incorporated | Coding vectors decomposed from higher-order ambisonics audio signals |
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| WO2016142002A1 (en) * | 2015-03-09 | 2016-09-15 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Audio encoder, audio decoder, method for encoding an audio signal and method for decoding an encoded audio signal |
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| JP6412292B2 (ja) * | 2016-01-22 | 2018-10-24 | フラウンホーファー−ゲゼルシャフト・ツール・フェルデルング・デル・アンゲヴァンテン・フォルシュング・アインゲトラーゲネル・フェライン | スペクトルドメイン・リサンプリングを用いて多チャネル信号を符号化又は復号化する装置及び方法 |
| EP3306609A1 (en) * | 2016-10-04 | 2018-04-11 | Fraunhofer Gesellschaft zur Förderung der Angewand | Apparatus and method for determining a pitch information |
| KR102383195B1 (ko) | 2017-10-27 | 2022-04-08 | 프라운호퍼-게젤샤프트 추르 푀르데룽 데어 안제반텐 포르슝 에 파우 | 디코더에서의 노이즈 감쇠 |
| WO2020207593A1 (en) | 2019-04-11 | 2020-10-15 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Audio decoder, apparatus for determining a set of values defining characteristics of a filter, methods for providing a decoded audio representation, methods for determining a set of values defining characteristics of a filter and computer program |
| EP4026124B1 (en) * | 2019-10-19 | 2025-12-10 | Google LLC | Self-supervised pitch estimation |
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| TWI872420B (zh) | 2020-10-13 | 2025-02-11 | 弗勞恩霍夫爾協會 | 在降混過程中使用方向資訊對多個音頻對象進行編碼的設備和方法、或使用優化共變異數合成進行解碼的設備和方法 |
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| US9653088B2 (en) * | 2007-06-13 | 2017-05-16 | Qualcomm Incorporated | Systems, methods, and apparatus for signal encoding using pitch-regularizing and non-pitch-regularizing coding |
| EP2015293A1 (en) * | 2007-06-14 | 2009-01-14 | Deutsche Thomson OHG | Method and apparatus for encoding and decoding an audio signal using adaptively switched temporal resolution in the spectral domain |
| EP2107556A1 (en) * | 2008-04-04 | 2009-10-07 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Audio transform coding using pitch correction |
| RU2536679C2 (ru) * | 2008-07-11 | 2014-12-27 | Фраунхофер-Гезелльшафт цур Фёрдерунг дер ангевандтен | Передатчик сигнала активации с деформацией по времени, кодер звукового сигнала, способ преобразования сигнала активации с деформацией по времени, способ кодирования звукового сигнала и компьютерные программы |
| MY154452A (en) * | 2008-07-11 | 2015-06-15 | Fraunhofer Ges Forschung | An apparatus and a method for decoding an encoded audio signal |
| DK3573056T3 (da) * | 2008-07-11 | 2022-10-03 | Fraunhofer Ges Forschung | Audiokoder og audioafkoder |
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2011
- 2011-03-09 ES ES11707415T patent/ES2461183T3/es active Active
- 2011-03-09 ES ES11707665T patent/ES2458354T3/es active Active
- 2011-03-09 WO PCT/EP2011/053538 patent/WO2011110591A1/en not_active Ceased
- 2011-03-09 PL PL11707665T patent/PL2532001T3/pl unknown
- 2011-03-09 CA CA2792504A patent/CA2792504C/en active Active
- 2011-03-09 TW TW100107905A patent/TWI441170B/zh active
- 2011-03-09 PL PL11707415T patent/PL2539893T3/pl unknown
- 2011-03-09 KR KR1020127026462A patent/KR101445296B1/ko active Active
- 2011-03-09 JP JP2012556506A patent/JP5625076B2/ja active Active
- 2011-03-09 CA CA2792500A patent/CA2792500C/en active Active
- 2011-03-09 TW TW100107904A patent/TWI455113B/zh active
- 2011-03-09 AU AU2011226140A patent/AU2011226140B2/en active Active
- 2011-03-09 EP EP20110707415 patent/EP2539893B1/en active Active
- 2011-03-09 BR BR112012022741-6A patent/BR112012022741B1/pt active IP Right Grant
- 2011-03-09 CN CN201180023298.2A patent/CN102884573B/zh active Active
- 2011-03-09 MX MX2012010439A patent/MX2012010439A/es active IP Right Grant
- 2011-03-09 WO PCT/EP2011/053541 patent/WO2011110594A1/en not_active Ceased
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- 2011-03-09 JP JP2012556505A patent/JP5456914B2/ja active Active
- 2011-03-09 CN CN201180021269.2A patent/CN102884572B/zh active Active
- 2011-03-09 BR BR112012022744-0A patent/BR112012022744B1/pt active IP Right Grant
- 2011-03-09 MX MX2012010469A patent/MX2012010469A/es active IP Right Grant
- 2011-03-09 RU RU2012143323A patent/RU2607264C2/ru not_active Application Discontinuation
- 2011-03-09 RU RU2012143340/08A patent/RU2586848C2/ru active
- 2011-03-09 KR KR1020127026461A patent/KR101445294B1/ko active Active
- 2011-03-10 AR ARP110100746 patent/AR080396A1/es active IP Right Grant
- 2011-03-10 AR ARP110100748 patent/AR084465A1/es active IP Right Grant
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2012
- 2012-09-06 US US13/604,869 patent/US9129597B2/en active Active
- 2012-09-10 US US13/608,980 patent/US9524726B2/en active Active
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