BR112013020482A2 - aparelho e método para processar um sinal de áudio decodificado em um domínio espectral - Google Patents
aparelho e método para processar um sinal de áudio decodificado em um domínio espectralInfo
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- BR112013020482A2 BR112013020482A2 BR112013020482-6A BR112013020482A BR112013020482A2 BR 112013020482 A2 BR112013020482 A2 BR 112013020482A2 BR 112013020482 A BR112013020482 A BR 112013020482A BR 112013020482 A2 BR112013020482 A2 BR 112013020482A2
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- audio signal
- decoded audio
- spectral
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- decoded
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- 230000005236 sound signal Effects 0.000 title abstract 14
- 230000003595 spectral effect Effects 0.000 title abstract 6
- 238000000034 method Methods 0.000 title abstract 2
- 238000001914 filtration Methods 0.000 abstract 1
Classifications
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- G10—MUSICAL INSTRUMENTS; ACOUSTICS
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- 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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- G10L19/025—Detection of transients or attacks for time/frequency resolution switching
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- 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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Computational Linguistics (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
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- Spectroscopy & Molecular Physics (AREA)
- Quality & Reliability (AREA)
- Algebra (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Mathematical Physics (AREA)
- Pure & Applied Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
- Stereophonic System (AREA)
Abstract
aparelho e método para processar um sinal de áudio decodificado em um domínio espectral um aparelho para processar um sinal de áudio decodificado (100), compreendendo um filtro (102) para filtrar o sinal de áudio decodificado para obter um sinal de áudio filtrado (104), um estágio conversor tempo-espectral (106) para converter o sinal de áudio decodificado e o sinal de áudio filtrado em representações espectrais correspondentes, cada representação espectral tendo uma pluralidade de sinais de sub-banda, um ponderador (108) para realizar uma ponderação seletiva de frequência do sinal de áudio filtrado, multiplicando os sinais de sub-banda pelos respectivos coeficientes de ponderação para obter um sinal de áudio filtrado ponderado, um subtrator (112) para realizar uma subtração como sub-banda entre o sinal de áudio filtrado ponderado e a representação espectral do sinal de áudio decodificado e um conversor espectral de tempo (114) para converter o sinal de áudio do resultado ou um sinal derivado do sinal de áudio do resultado em uma representação de domínio de tempo para obter um sinal de áudio decodificado processado (116). figura 1a
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201161442632P | 2011-02-14 | 2011-02-14 | |
US61/442,632 | 2011-02-14 | ||
PCT/EP2012/052292 WO2012110415A1 (en) | 2011-02-14 | 2012-02-10 | Apparatus and method for processing a decoded audio signal in a spectral domain |
Publications (2)
Publication Number | Publication Date |
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BR112013020482A2 true BR112013020482A2 (pt) | 2018-07-10 |
BR112013020482B1 BR112013020482B1 (pt) | 2021-02-23 |
Family
ID=71943604
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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BR112013020482A BR112013020482B1 (pt) | 2011-02-14 | 2012-02-10 | aparelho e método para processar um sinal de áudio decodificado em um domínio espectral |
Country Status (19)
Country | Link |
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US (1) | US9583110B2 (pt) |
EP (1) | EP2676268B1 (pt) |
JP (1) | JP5666021B2 (pt) |
KR (1) | KR101699898B1 (pt) |
CN (1) | CN103503061B (pt) |
AR (1) | AR085362A1 (pt) |
AU (1) | AU2012217269B2 (pt) |
BR (1) | BR112013020482B1 (pt) |
CA (1) | CA2827249C (pt) |
ES (1) | ES2529025T3 (pt) |
HK (1) | HK1192048A1 (pt) |
MX (1) | MX2013009344A (pt) |
MY (1) | MY164797A (pt) |
PL (1) | PL2676268T3 (pt) |
RU (1) | RU2560788C2 (pt) |
SG (1) | SG192746A1 (pt) |
TW (1) | TWI469136B (pt) |
WO (1) | WO2012110415A1 (pt) |
ZA (1) | ZA201306838B (pt) |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
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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 |
AR085217A1 (es) | 2011-02-14 | 2013-09-18 | Fraunhofer Ges Forschung | Aparato y metodo para codificar una porcion de una señal de audio utilizando deteccion de un transiente y resultado de calidad |
SG192747A1 (en) | 2011-02-14 | 2013-09-30 | Fraunhofer Ges Forschung | Encoding and decoding of pulse positions of tracks of an audio signal |
MY165853A (en) | 2011-02-14 | 2018-05-18 | Fraunhofer Ges Forschung | Linear prediction based coding scheme using spectral domain noise shaping |
WO2012110478A1 (en) | 2011-02-14 | 2012-08-23 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Information signal representation using lapped transform |
KR101551046B1 (ko) | 2011-02-14 | 2015-09-07 | 프라운호퍼 게젤샤프트 쭈르 푀르데룽 데어 안겐반텐 포르슝 에. 베. | 저-지연 통합 스피치 및 오디오 코딩에서 에러 은닉을 위한 장치 및 방법 |
EP2720222A1 (en) * | 2012-10-10 | 2014-04-16 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Apparatus and method for efficient synthesis of sinusoids and sweeps by employing spectral patterns |
RU2678657C1 (ru) * | 2012-11-05 | 2019-01-30 | Панасоник Интеллекчуал Проперти Корпорэйшн оф Америка | Устройство кодирования речи-аудио, устройство декодирования речи-аудио, способ кодирования речи-аудио и способ декодирования речи-аудио |
AU2014211525B2 (en) * | 2013-01-29 | 2016-09-01 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Apparatus and method for processing an encoded signal and encoder and method for generating an encoded signal |
DK2981958T3 (en) | 2013-04-05 | 2018-05-28 | Dolby Int Ab | AUDIO CODES AND DECODS |
CN110223702B (zh) * | 2013-05-24 | 2023-04-11 | 杜比国际公司 | 音频解码系统和重构方法 |
US10510355B2 (en) * | 2013-09-12 | 2019-12-17 | Dolby International Ab | Time-alignment of QMF based processing data |
KR102244613B1 (ko) | 2013-10-28 | 2021-04-26 | 삼성전자주식회사 | Qmf 필터링 방법 및 이를 수행하는 장치 |
EP2887350B1 (en) | 2013-12-19 | 2016-10-05 | Dolby Laboratories Licensing Corporation | Adaptive quantization noise filtering of decoded audio data |
JP6035270B2 (ja) * | 2014-03-24 | 2016-11-30 | 株式会社Nttドコモ | 音声復号装置、音声符号化装置、音声復号方法、音声符号化方法、音声復号プログラム、および音声符号化プログラム |
EP2980799A1 (en) * | 2014-07-28 | 2016-02-03 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Apparatus and method for processing an audio signal using a harmonic post-filter |
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JP2014510301A (ja) | 2014-04-24 |
MY164797A (en) | 2018-01-30 |
KR20130133843A (ko) | 2013-12-09 |
RU2013142138A (ru) | 2015-03-27 |
CN103503061A (zh) | 2014-01-08 |
AU2012217269A1 (en) | 2013-09-05 |
SG192746A1 (en) | 2013-09-30 |
US20130332151A1 (en) | 2013-12-12 |
EP2676268B1 (en) | 2014-12-03 |
TW201237848A (en) | 2012-09-16 |
CA2827249C (en) | 2016-08-23 |
JP5666021B2 (ja) | 2015-02-04 |
CN103503061B (zh) | 2016-02-17 |
ES2529025T3 (es) | 2015-02-16 |
MX2013009344A (es) | 2013-10-01 |
CA2827249A1 (en) | 2012-08-23 |
TWI469136B (zh) | 2015-01-11 |
BR112013020482B1 (pt) | 2021-02-23 |
PL2676268T3 (pl) | 2015-05-29 |
US9583110B2 (en) | 2017-02-28 |
KR101699898B1 (ko) | 2017-01-25 |
AR085362A1 (es) | 2013-09-25 |
WO2012110415A1 (en) | 2012-08-23 |
AU2012217269B2 (en) | 2015-10-22 |
HK1192048A1 (en) | 2014-08-08 |
RU2560788C2 (ru) | 2015-08-20 |
ZA201306838B (en) | 2014-05-28 |
EP2676268A1 (en) | 2013-12-25 |
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