MX2016003074A - Extension de ancho de banda adaptable y aparato correspondiente. - Google Patents
Extension de ancho de banda adaptable y aparato correspondiente.Info
- Publication number
- MX2016003074A MX2016003074A MX2016003074A MX2016003074A MX2016003074A MX 2016003074 A MX2016003074 A MX 2016003074A MX 2016003074 A MX2016003074 A MX 2016003074A MX 2016003074 A MX2016003074 A MX 2016003074A MX 2016003074 A MX2016003074 A MX 2016003074A
- Authority
- MX
- Mexico
- Prior art keywords
- band
- audio signal
- sub
- excitation spectrum
- low
- Prior art date
Links
Classifications
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
- G10L19/22—Mode decision, i.e. based on audio signal content versus external parameters
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
- G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
- G10L19/12—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a code excitation, e.g. in code excited linear prediction [CELP] vocoders
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
- G10L19/0204—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 subband decomposition
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
- G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
- G10L19/167—Audio streaming, i.e. formatting and decoding of an encoded audio signal representation into a data stream for transmission or storage purposes
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Processing of the speech or voice signal 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
Abstract
Un método para decodificar un flujo de bits de audio codificado y generar una extensión de ancho de banda de frecuencia incluye decodificar un flujo de bits de audio para producir una señal de audio de banda baja decodificada y generar un espectro de excitación de banda baja que corresponde a una banda de baja frecuencia. Un área de sub-banda se selecciona desde dentro de la banda de baja frecuencia utilizando un parámetro que indica información de energía de una envolvente espectral de la señal de audio de banda baja decodificada. Un espectro de excitación de banda alta se genera para una banda de alta frecuencia al copiar un espectro de excitación de sub-banda desde el área de sub-banda seleccionada a un área de sub-banda alta correspondiente a la banda de alta frecuencia. Usando el espectro generado de excitación de banda alta, una señal de audio de banda alta extendida se genera mediante la aplicación de una envolvente espectral de banda alta. Se añade la señal de audio de banda alta extendida a la señal de audio de banda baja decodificada para generar una señal de salida de audio que tiene un ancho de banda de frecuencia extendida.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201361875690P | 2013-09-10 | 2013-09-10 | |
US14/478,839 US9666202B2 (en) | 2013-09-10 | 2014-09-05 | Adaptive bandwidth extension and apparatus for the same |
PCT/CN2014/086135 WO2015035896A1 (en) | 2013-09-10 | 2014-09-09 | Adaptive bandwidth extension and apparatus for the same |
Publications (2)
Publication Number | Publication Date |
---|---|
MX2016003074A true MX2016003074A (es) | 2016-05-31 |
MX356721B MX356721B (es) | 2018-06-11 |
Family
ID=52626402
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MX2016003074A MX356721B (es) | 2013-09-10 | 2014-09-09 | Extension de ancho de banda adaptable y aparato correspondiente. |
Country Status (16)
Country | Link |
---|---|
US (2) | US9666202B2 (es) |
EP (3) | EP4258261A3 (es) |
JP (1) | JP6336086B2 (es) |
KR (2) | KR101871644B1 (es) |
CN (2) | CN107393552B (es) |
AU (1) | AU2014320881B2 (es) |
BR (1) | BR112016005111B1 (es) |
CA (1) | CA2923218C (es) |
ES (1) | ES2644967T3 (es) |
HK (1) | HK1220541A1 (es) |
MX (1) | MX356721B (es) |
MY (1) | MY192508A (es) |
PL (1) | PL3301674T3 (es) |
RU (1) | RU2641224C2 (es) |
SG (1) | SG11201601637PA (es) |
WO (1) | WO2015035896A1 (es) |
Families Citing this family (26)
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US9666202B2 (en) * | 2013-09-10 | 2017-05-30 | Huawei Technologies Co., Ltd. | Adaptive bandwidth extension and apparatus for the same |
CN108172239B (zh) * | 2013-09-26 | 2021-01-12 | 华为技术有限公司 | 频带扩展的方法及装置 |
CN104517611B (zh) * | 2013-09-26 | 2016-05-25 | 华为技术有限公司 | 一种高频激励信号预测方法及装置 |
FR3017484A1 (fr) | 2014-02-07 | 2015-08-14 | Orange | Extension amelioree de bande de frequence dans un decodeur de signaux audiofrequences |
EP3115991A4 (en) | 2014-03-03 | 2017-08-02 | Samsung Electronics Co., Ltd. | Method and apparatus for high frequency decoding for bandwidth extension |
KR101701623B1 (ko) * | 2015-07-09 | 2017-02-13 | 라인 가부시키가이샤 | VoIP 통화음성 대역폭 감소를 은닉하는 시스템 및 방법 |
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US10573331B2 (en) * | 2018-05-01 | 2020-02-25 | Qualcomm Incorporated | Cooperative pyramid vector quantizers for scalable audio coding |
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CN110660402B (zh) * | 2018-06-29 | 2022-03-29 | 华为技术有限公司 | 立体声信号编码过程中确定加权系数的方法和装置 |
CN110556122B (zh) * | 2019-09-18 | 2024-01-19 | 腾讯科技(深圳)有限公司 | 频带扩展方法、装置、电子设备及计算机可读存储介质 |
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CN113299313B (zh) * | 2021-01-28 | 2024-03-26 | 维沃移动通信有限公司 | 音频处理方法、装置及电子设备 |
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2014
- 2014-09-05 US US14/478,839 patent/US9666202B2/en active Active
- 2014-09-09 CA CA2923218A patent/CA2923218C/en active Active
- 2014-09-09 KR KR1020177027672A patent/KR101871644B1/ko active IP Right Grant
- 2014-09-09 EP EP23168838.3A patent/EP4258261A3/en active Pending
- 2014-09-09 CN CN201710662896.3A patent/CN107393552B/zh active Active
- 2014-09-09 KR KR1020167008694A patent/KR101785885B1/ko active IP Right Grant
- 2014-09-09 MX MX2016003074A patent/MX356721B/es active IP Right Grant
- 2014-09-09 EP EP14844454.0A patent/EP3039676B1/en active Active
- 2014-09-09 ES ES14844454.0T patent/ES2644967T3/es active Active
- 2014-09-09 EP EP17186095.0A patent/EP3301674B1/en active Active
- 2014-09-09 JP JP2016541789A patent/JP6336086B2/ja active Active
- 2014-09-09 RU RU2016113288A patent/RU2641224C2/ru active
- 2014-09-09 SG SG11201601637PA patent/SG11201601637PA/en unknown
- 2014-09-09 WO PCT/CN2014/086135 patent/WO2015035896A1/en active Application Filing
- 2014-09-09 CN CN201480047702.3A patent/CN105637583B/zh active Active
- 2014-09-09 AU AU2014320881A patent/AU2014320881B2/en active Active
- 2014-09-09 BR BR112016005111-4A patent/BR112016005111B1/pt active IP Right Grant
- 2014-09-09 PL PL17186095.0T patent/PL3301674T3/pl unknown
- 2014-09-09 MY MYPI2016700813A patent/MY192508A/en unknown
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2016
- 2016-07-15 HK HK16108371.4A patent/HK1220541A1/zh unknown
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2017
- 2017-04-19 US US15/491,181 patent/US10249313B2/en active Active
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