MX349256B - Aparato y metodo para seleccionar uno de un primer algoritmo de codificacion y un segundo algoritmo de codificacion usando reduccion de armonicos. - Google Patents
Aparato y metodo para seleccionar uno de un primer algoritmo de codificacion y un segundo algoritmo de codificacion usando reduccion de armonicos.Info
- Publication number
- MX349256B MX349256B MX2015015684A MX2015015684A MX349256B MX 349256 B MX349256 B MX 349256B MX 2015015684 A MX2015015684 A MX 2015015684A MX 2015015684 A MX2015015684 A MX 2015015684A MX 349256 B MX349256 B MX 349256B
- Authority
- MX
- Mexico
- Prior art keywords
- encoding algorithm
- audio signal
- encoding
- selecting
- snr
- Prior art date
Links
- 238000000034 method Methods 0.000 title 1
- 230000005236 sound signal Effects 0.000 abstract 11
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
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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
- G10L19/032—Quantisation or dequantisation of spectral components
-
- 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
- G10L19/09—Long term prediction, i.e. removing periodical redundancies, e.g. by using adaptive codebook or pitch predictor
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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
- G10L19/08—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
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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
- G10L19/265—Pre-filtering, e.g. high frequency emphasis prior to 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
- G10L19/02—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
- 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 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
- G10L2019/0001—Codebooks
- G10L2019/0002—Codebook adaptations
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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
- G10L2019/0001—Codebooks
- G10L2019/0011—Long term prediction filters, i.e. pitch estimation
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)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Mathematical Physics (AREA)
Abstract
Un aparato para seleccionar uno de un primer algoritmo de codificación que tiene una primera característica y un segundo algoritmo de codificación que tiene una segunda característica para codificar una porción de una señal de audio para obtener una versión codificada de la porción de la señal de audio, comprende un filtro configurado para recibir la señal de audio, para reducir la amplitud de armónicos en la señal de audio y para producir una versión filtrada de la señal de audio. Se proporciona un primer estimador para usar la versión filtrada de la señal de audio en la estimación de una SNR o una SNR segmentada de la porción de la señal de audio como una primera medida de calidad para la porción de la señal de audio, que está asociada con el primer algoritmo de codificación, sin codificar y decodificar realmente la porción de la señal de audio usando el primer algoritmo de codificación. Se proporciona un segundo estimador para estimar una SNR o una SNR segmentada como una segunda medición de calidad para la porción de la señal de audio, que está asociada con el segundo algoritmo de codificación, sin codificar y decodificar realmente la porción de la señal de audio usando el segundo algoritmo de codificación. El aparato comprende un controlador para seleccionar el primer algoritmo de codificación o el segundo algoritmo de codificación en base a una comparación entre la primera medición de calidad y la segunda medición de calidad.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14178809 | 2014-07-28 | ||
PCT/EP2015/066677 WO2016016053A1 (en) | 2014-07-28 | 2015-07-21 | Apparatus and method for selecting one of a first encoding algorithm and a second encoding algorithm using harmonics reduction |
Publications (2)
Publication Number | Publication Date |
---|---|
MX2015015684A MX2015015684A (es) | 2016-04-28 |
MX349256B true MX349256B (es) | 2017-07-19 |
Family
ID=51224872
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MX2015015684A MX349256B (es) | 2014-07-28 | 2015-07-21 | Aparato y metodo para seleccionar uno de un primer algoritmo de codificacion y un segundo algoritmo de codificacion usando reduccion de armonicos. |
Country Status (19)
Country | Link |
---|---|
US (3) | US9818421B2 (es) |
EP (1) | EP3000110B1 (es) |
JP (1) | JP6086999B2 (es) |
KR (1) | KR101748517B1 (es) |
CN (2) | CN110444219B (es) |
AR (1) | AR101347A1 (es) |
AU (1) | AU2015258241B2 (es) |
BR (1) | BR112015029172B1 (es) |
ES (1) | ES2614358T3 (es) |
HK (1) | HK1222943A1 (es) |
MX (1) | MX349256B (es) |
MY (1) | MY174028A (es) |
PL (1) | PL3000110T3 (es) |
PT (1) | PT3000110T (es) |
RU (1) | RU2632151C2 (es) |
SG (1) | SG11201509526SA (es) |
TW (1) | TWI582758B (es) |
WO (1) | WO2016016053A1 (es) |
ZA (1) | ZA201508541B (es) |
Families Citing this family (11)
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AU2014211583B2 (en) | 2013-01-29 | 2017-01-05 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Apparatus and method for selecting one of a first audio encoding algorithm and a second audio encoding algorithm |
EP2980798A1 (en) * | 2014-07-28 | 2016-02-03 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Harmonicity-dependent controlling of a harmonic filter tool |
CN110444219B (zh) * | 2014-07-28 | 2023-06-13 | 弗劳恩霍夫应用研究促进协会 | 选择第一编码演算法或第二编码演算法的装置与方法 |
WO2019091576A1 (en) | 2017-11-10 | 2019-05-16 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Audio encoders, audio decoders, methods and computer programs adapting an encoding and decoding of least significant bits |
EP3483884A1 (en) | 2017-11-10 | 2019-05-15 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Signal filtering |
EP3483882A1 (en) | 2017-11-10 | 2019-05-15 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Controlling bandwidth in encoders and/or decoders |
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AU2014211583B2 (en) * | 2013-01-29 | 2017-01-05 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Apparatus and method for selecting one of a first audio encoding algorithm and a second audio encoding algorithm |
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 |
CN110444219B (zh) * | 2014-07-28 | 2023-06-13 | 弗劳恩霍夫应用研究促进协会 | 选择第一编码演算法或第二编码演算法的装置与方法 |
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2015
- 2015-07-21 CN CN201910295456.8A patent/CN110444219B/zh active Active
- 2015-07-21 PL PL15739590T patent/PL3000110T3/pl unknown
- 2015-07-21 MY MYPI2015002775A patent/MY174028A/en unknown
- 2015-07-21 MX MX2015015684A patent/MX349256B/es active IP Right Grant
- 2015-07-21 JP JP2015563151A patent/JP6086999B2/ja active Active
- 2015-07-21 CN CN201580000798.2A patent/CN105451842B/zh active Active
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