ES2501493T3 - Re-muestreo de señales de salida de códecs de audio basados en QMF - Google Patents
Re-muestreo de señales de salida de códecs de audio basados en QMF Download PDFInfo
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- ES2501493T3 ES2501493T3 ES11741598.4T ES11741598T ES2501493T3 ES 2501493 T3 ES2501493 T3 ES 2501493T3 ES 11741598 T ES11741598 T ES 11741598T ES 2501493 T3 ES2501493 T3 ES 2501493T3
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- 238000005070 sampling Methods 0.000 title abstract 9
- 230000005236 sound signal Effects 0.000 abstract 9
- 230000015572 biosynthetic process Effects 0.000 abstract 4
- 238000003786 synthesis reaction Methods 0.000 abstract 4
- 238000000034 method Methods 0.000 abstract 2
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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
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- G—PHYSICS
- 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
- G10L19/04—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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- 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
- G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
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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
- G10L19/0204—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 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
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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
- G10L19/26—Pre-filtering or post-filtering
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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
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H17/00—Networks using digital techniques
- H03H17/02—Frequency selective networks
- H03H17/0211—Frequency selective networks using specific transformation algorithms, e.g. WALSH functions, Fermat transforms, Mersenne transforms, polynomial transforms, Hilbert transforms
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H17/00—Networks using digital techniques
- H03H17/02—Frequency selective networks
- H03H17/0248—Filters characterised by a particular frequency response or filtering method
- H03H17/0264—Filter sets with mutual related characteristics
- H03H17/0272—Quadrature mirror filters
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H17/00—Networks using digital techniques
- H03H17/02—Frequency selective networks
- H03H17/06—Non-recursive filters
- H03H17/0621—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing
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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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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H17/00—Networks using digital techniques
- H03H17/02—Frequency selective networks
- H03H17/0294—Variable filters; Programmable filters
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- Computational Linguistics (AREA)
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- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Acoustics & Sound (AREA)
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- Computer Hardware Design (AREA)
- Quality & Reliability (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Algebra (AREA)
- Computing Systems (AREA)
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- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Pure & Applied Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Stereophonic System (AREA)
Abstract
Un aparato para el re-muestreo de una señal de audio procesada (SA) que comprende: un primer procesador de señales de audio configurable (110) para procesar una señal de audio (s0) según diferentes ajustes de configuración (conf) para obtener una señal de audio procesada (s1), en el que el aparato está adaptado de modo que diferentes ajustes de configuración (conf) dan como resultado diferentes frecuencias de muestreo (sr1) de la señal de audio procesada (s1), un banco de filtros de análisis (120) que tiene un primer número (c1) de canales de banco de filtros de análisis, un banco de filtros de síntesis (130) que tiene un segundo número (c2) de canales de banco de filtros de síntesis, un segundo procesador de audio (140) que está adaptado para recibir y procesar una señal de audio (s2) que tiene una frecuencia de muestreo predeterminada (sr2), y un controlador (150) para controlar el primer número (c1) de canales de banco de filtros de análisis y el segundo número (c2) de canales de banco de filtros de síntesis de acuerdo con un ajuste de configuración (conf) proporcionado al primer procesador de señales de audio configurable (110), de modo que una salida de señal de audio (s2) del banco de filtros de síntesis (130) tiene la frecuencia de muestreo predeterminada (sr2) o una frecuencia de muestreo (sr2') que es diferente de la frecuencia de muestreo predeterminada (sr2) y que es más cercana a la frecuencia de muestreo predeterminada (sr2) que una frecuencia de muestreo (sr1) de una señal de entrada del banco de filtros de análisis que es la señal de audio procesada (s1).
Description
Claims (1)
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imagen1 imagen2
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US37312610P | 2010-08-12 | 2010-08-12 | |
US373126P | 2010-08-12 | ||
PCT/EP2011/063848 WO2012020090A1 (en) | 2010-08-12 | 2011-08-11 | Resampling output signals of qmf based audio codecs |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2501493T3 true ES2501493T3 (es) | 2014-10-02 |
Family
ID=44630032
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES11741598.4T Active ES2501493T3 (es) | 2010-08-12 | 2011-08-11 | Re-muestreo de señales de salida de códecs de audio basados en QMF |
Country Status (18)
Country | Link |
---|---|
US (11) | US9595265B2 (es) |
EP (1) | EP2603913B1 (es) |
JP (1) | JP5665987B2 (es) |
KR (1) | KR101517446B1 (es) |
CN (1) | CN103270553B (es) |
AR (1) | AR082671A1 (es) |
AU (1) | AU2011288406B2 (es) |
BR (5) | BR122021003884B1 (es) |
CA (1) | CA2807889C (es) |
ES (1) | ES2501493T3 (es) |
HK (1) | HK1186832A1 (es) |
MX (1) | MX2013001650A (es) |
MY (1) | MY156027A (es) |
PL (1) | PL2603913T3 (es) |
RU (1) | RU2562434C2 (es) |
SG (1) | SG187743A1 (es) |
TW (1) | TWI460719B (es) |
WO (1) | WO2012020090A1 (es) |
Families Citing this family (12)
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WO2013142650A1 (en) * | 2012-03-23 | 2013-09-26 | Dolby International Ab | Enabling sampling rate diversity in a voice communication system |
US9552818B2 (en) | 2012-06-14 | 2017-01-24 | Dolby International Ab | Smooth configuration switching for multichannel audio rendering based on a variable number of received channels |
KR102158002B1 (ko) * | 2013-01-21 | 2020-09-21 | 돌비 레버러토리즈 라이쎈싱 코오포레이션 | 프로그램 라우드니스 및 경계 메타데이터를 가진 오디오 인코더 및 디코더 |
JP6305694B2 (ja) * | 2013-05-31 | 2018-04-04 | クラリオン株式会社 | 信号処理装置及び信号処理方法 |
BR122020015614B1 (pt) | 2014-04-17 | 2022-06-07 | Voiceage Evs Llc | Método e dispositivo para interpolar parâmetros de filtro de predição linear em um quadro de processamento de sinal sonoro atual seguindo um quadro de processamento de sinal sonoro anterior |
FR3023646A1 (fr) * | 2014-07-11 | 2016-01-15 | Orange | Mise a jour des etats d'un post-traitement a une frequence d'echantillonnage variable selon la trame |
EP3107096A1 (en) | 2015-06-16 | 2016-12-21 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Downscaled decoding |
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 |
EP3475944B1 (en) | 2016-06-22 | 2020-07-15 | Dolby International AB | Audio decoder and method for transforming a digital audio signal from a first to a second frequency domain |
EP3276620A1 (en) * | 2016-07-29 | 2018-01-31 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Time domain aliasing reduction for non-uniform filterbanks which use spectral analysis followed by partial synthesis |
CN111986685B (zh) * | 2020-08-31 | 2024-06-21 | 北京百瑞互联技术股份有限公司 | 一种实现高采样率的音频编解码方法及系统 |
CN116778950B (zh) * | 2023-08-18 | 2023-11-17 | 玖益(深圳)医疗科技有限公司 | 用于音频数据传输的采样率匹配方法、系统及存储介质 |
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- 2011-08-11 MY MYPI2013000400A patent/MY156027A/en unknown
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- 2011-08-11 EP EP11741598.4A patent/EP2603913B1/en active Active
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2013
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2022
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2023
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