MX356721B - Extension de ancho de banda adaptable y aparato correspondiente. - Google Patents
Extension de ancho de banda adaptable y aparato correspondiente.Info
- Publication number
- MX356721B MX356721B MX2016003074A MX2016003074A MX356721B MX 356721 B MX356721 B MX 356721B MX 2016003074 A MX2016003074 A MX 2016003074A MX 2016003074 A MX2016003074 A MX 2016003074A MX 356721 B MX356721 B MX 356721B
- Authority
- MX
- Mexico
- Prior art keywords
- band
- audio signal
- sub
- excitation spectrum
- low
- Prior art date
Links
- 230000003044 adaptive effect Effects 0.000 title 1
- 230000005236 sound signal Effects 0.000 abstract 5
- 238000000695 excitation spectrum Methods 0.000 abstract 4
- 230000003595 spectral effect Effects 0.000 abstract 2
- 238000000034 method 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
- G10L19/04—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
-
- 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
- G10L19/0204—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
-
- 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
- G10L19/08—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 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
- G10L19/167—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 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
-
- 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
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/038—Speech enhancement, e.g. noise reduction or echo cancellation using band spreading techniques
-
- 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
- G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
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)
- Quality & Reliability (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
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 MX2016003074A (es) | 2016-05-31 |
MX356721B true 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) | KR101785885B1 (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) |
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US9666202B2 (en) * | 2013-09-10 | 2017-05-30 | Huawei Technologies Co., Ltd. | Adaptive bandwidth extension and apparatus for the same |
CN105761723B (zh) * | 2013-09-26 | 2019-01-15 | 华为技术有限公司 | 一种高频激励信号预测方法及装置 |
CN104517610B (zh) * | 2013-09-26 | 2018-03-06 | 华为技术有限公司 | 频带扩展的方法及装置 |
FR3017484A1 (fr) | 2014-02-07 | 2015-08-14 | Orange | Extension amelioree de bande de frequence dans un decodeur de signaux audiofrequences |
CN111312277B (zh) * | 2014-03-03 | 2023-08-15 | 三星电子株式会社 | 用于带宽扩展的高频解码的方法及设备 |
KR101701623B1 (ko) * | 2015-07-09 | 2017-02-13 | 라인 가부시키가이샤 | VoIP 통화음성 대역폭 감소를 은닉하는 시스템 및 방법 |
JP6611042B2 (ja) * | 2015-12-02 | 2019-11-27 | パナソニックIpマネジメント株式会社 | 音声信号復号装置及び音声信号復号方法 |
CN106057220B (zh) * | 2016-05-19 | 2020-01-03 | Tcl集团股份有限公司 | 一种音频信号的高频扩展方法和音频播放器 |
KR102494080B1 (ko) | 2016-06-01 | 2023-02-01 | 삼성전자 주식회사 | 전자 장치 및 전자 장치의 사운드 신호 보정 방법 |
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CN107886966A (zh) * | 2017-10-30 | 2018-04-06 | 捷开通讯(深圳)有限公司 | 终端及其优化语音命令的方法、存储装置 |
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CN110232909B (zh) * | 2018-03-02 | 2024-07-23 | 北京搜狗科技发展有限公司 | 一种音频处理方法、装置、设备及可读存储介质 |
US10586546B2 (en) | 2018-04-26 | 2020-03-10 | Qualcomm Incorporated | Inversely enumerated pyramid vector quantizers for efficient rate adaptation in audio coding |
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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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2014
- 2014-09-05 US US14/478,839 patent/US9666202B2/en active Active
- 2014-09-09 JP JP2016541789A patent/JP6336086B2/ja active Active
- 2014-09-09 EP EP23168838.3A patent/EP4258261A3/en active Pending
- 2014-09-09 MX MX2016003074A patent/MX356721B/es active IP Right Grant
- 2014-09-09 KR KR1020167008694A patent/KR101785885B1/ko active IP Right Grant
- 2014-09-09 SG SG11201601637PA patent/SG11201601637PA/en unknown
- 2014-09-09 RU RU2016113288A patent/RU2641224C2/ru active
- 2014-09-09 PL PL17186095.0T patent/PL3301674T3/pl unknown
- 2014-09-09 EP EP17186095.0A patent/EP3301674B1/en active Active
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