MX2016016897A - Decodificador y metodo para decodificar una señal de audio, codificador y metodo para codificar una señal de audio. - Google Patents
Decodificador y metodo para decodificar una señal de audio, codificador y metodo para codificar una señal de audio.Info
- Publication number
- MX2016016897A MX2016016897A MX2016016897A MX2016016897A MX2016016897A MX 2016016897 A MX2016016897 A MX 2016016897A MX 2016016897 A MX2016016897 A MX 2016016897A MX 2016016897 A MX2016016897 A MX 2016016897A MX 2016016897 A MX2016016897 A MX 2016016897A
- Authority
- MX
- Mexico
- Prior art keywords
- time frame
- audio signal
- audio
- phase
- signal
- Prior art date
Links
- 230000005236 sound signal Effects 0.000 title abstract 6
- 238000001228 spectrum Methods 0.000 abstract 3
- 238000004364 calculation 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
- G10L19/02—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
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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
- G10L19/0204—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
- G10L19/0208—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
- G10L19/022—Blocking, i.e. grouping of samples in time; Choice of analysis windows; Overlap factoring
- G10L19/025—Detection of transients or attacks for time/frequency resolution switching
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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
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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
- G10L19/04—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
- G10L21/003—Changing voice quality, e.g. pitch or formants
- G10L21/007—Changing voice quality, e.g. pitch or formants characterised by the process used
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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
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
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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
- 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
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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
- G10L21/003—Changing voice quality, e.g. pitch or formants
- G10L21/007—Changing voice quality, e.g. pitch or formants characterised by the process used
- G10L21/01—Correction of time axis
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)
- Stereophonic System (AREA)
- Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
- Amplifiers (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
- Television Receiver Circuits (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
Abstract
Se presenta un decodificador 110´´ para decodificar una señal de audio 32. El decodificador 110´´ comprende un primer generador de espectros objetivo 65a para generar un espectro objetivo 85a´´ correspondiente al primer intervalo de tiempo de una señal de sub-banda de la señal de audio 32 utilizando primeros datos de corrección 295a. Un primer corrector de fase 70a corrige una fase 45 de la señal de sub-banda en el primer intervalo de tiempo de la señal de audio 32 que se determina con un algoritmo de corrección de fase, donde la corrección se realiza reduciendo una diferencia entre una medida de la señal de sub-banda en el primer intervalo de tiempo de la señal de audio 32 y el espectro objetivo 85a´´ Una calculadora de señales de sub-bandas de audio 350 calcula la señal de sub-banda de audio 355 correspondiente al primer intervalo de tiempo utilizando una fase corregida 91a para el intervalo de tiempo y para calcular señales de sub-bandas de audio 355 correspondientes a un segundo intervalo de tiempo diferente del primer intervalo de tiempo empleando la medida de la señal de sub-banda 85a´´ en el segundo intervalo de tiempo o utilizando un cálculo de fase corregida de acuerdo con otro algoritmo de corrección de fase diferente del algoritmo de corrección de fase.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14175202 | 2014-07-01 | ||
EP15151463.5A EP2963646A1 (en) | 2014-07-01 | 2015-01-16 | Decoder and method for decoding an audio signal, encoder and method for encoding an audio signal |
PCT/EP2015/064428 WO2016001066A1 (en) | 2014-07-01 | 2015-06-25 | Decoder and method for decoding an audio signal, encoder and method for encoding an audio signal |
Publications (2)
Publication Number | Publication Date |
---|---|
MX2016016897A true MX2016016897A (es) | 2017-03-27 |
MX359035B MX359035B (es) | 2018-09-12 |
Family
ID=52449941
Family Applications (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MX2016016758A MX356672B (es) | 2014-07-01 | 2015-06-25 | Procesador de audio y método para procesar una señal de audio usando corrección de fase horizontal. |
MX2016017286A MX364198B (es) | 2014-07-01 | 2015-06-25 | Procesador de audio y metodo para procesar una señal de audio usando correcion de fase vertical. |
MX2016016897A MX359035B (es) | 2014-07-01 | 2015-06-25 | Decodificador y método para decodificar una señal de audio, codificador y método para codificar una señal de audio. |
MX2016016770A MX354659B (es) | 2014-07-01 | 2015-06-25 | Calculadora y método para determinar datos de corrección de fase correspondientes a una señal de audio. |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MX2016016758A MX356672B (es) | 2014-07-01 | 2015-06-25 | Procesador de audio y método para procesar una señal de audio usando corrección de fase horizontal. |
MX2016017286A MX364198B (es) | 2014-07-01 | 2015-06-25 | Procesador de audio y metodo para procesar una señal de audio usando correcion de fase vertical. |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MX2016016770A MX354659B (es) | 2014-07-01 | 2015-06-25 | Calculadora y método para determinar datos de corrección de fase correspondientes a una señal de audio. |
Country Status (19)
Country | Link |
---|---|
US (6) | US10140997B2 (es) |
EP (8) | EP2963645A1 (es) |
JP (4) | JP6527536B2 (es) |
KR (4) | KR101944386B1 (es) |
CN (4) | CN106537498B (es) |
AR (4) | AR101082A1 (es) |
AU (7) | AU2015282747B2 (es) |
BR (3) | BR112016029895A2 (es) |
CA (6) | CA2998044C (es) |
ES (4) | ES2677250T3 (es) |
MX (4) | MX356672B (es) |
MY (3) | MY182840A (es) |
PL (3) | PL3164869T3 (es) |
PT (3) | PT3164873T (es) |
RU (4) | RU2676414C2 (es) |
SG (4) | SG11201610704VA (es) |
TR (2) | TR201810148T4 (es) |
TW (4) | TWI587292B (es) |
WO (4) | WO2016001067A1 (es) |
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