MX351577B - Aparato y método para realizar un desvanecimiento de un espectro mdct a ruido blanco antes de aplicar fdns. - Google Patents
Aparato y método para realizar un desvanecimiento de un espectro mdct a ruido blanco antes de aplicar fdns.Info
- Publication number
- MX351577B MX351577B MX2015016892A MX2015016892A MX351577B MX 351577 B MX351577 B MX 351577B MX 2015016892 A MX2015016892 A MX 2015016892A MX 2015016892 A MX2015016892 A MX 2015016892A MX 351577 B MX351577 B MX 351577B
- Authority
- MX
- Mexico
- Prior art keywords
- audio signal
- spectrum
- modified
- fading
- receiving interface
- 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
- G10L19/005—Correction of errors induced by the transmission channel, if related to the coding algorithm
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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
- G10L19/002—Dynamic bit allocation
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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
- G10L19/012—Comfort noise or silence coding
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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
- G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
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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
- G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
- G10L19/07—Line spectrum pair [LSP] vocoders
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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
- G10L19/083—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being an excitation gain
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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
- G10L19/09—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 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
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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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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
- H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
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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
- G10L19/02—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 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
- G10L2019/0001—Codebooks
- G10L2019/0002—Codebook adaptations
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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
- G10L2019/0001—Codebooks
- G10L2019/0011—Long term prediction filters, i.e. pitch estimation
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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
- G10L2019/0001—Codebooks
- G10L2019/0016—Codebook for LPC parameters
Abstract
Se provee un aparato para la decodificación de una señal de audio codificada a fin de obtener una señal de audio reconstruida. El aparato comprende una interfaz receptora (1210) para la recepción de una o más tramas que comprenden información sobre una pluralidad de muestras de señales de audio de un espectro de señales de audio de la señal de audio codificada, y un procesador (1220) para la generación de la señal de audio reconstruida. El procesador (1220) está configurado para generar la señal de audio reconstruida mediante el desvanecimiento de un espectro modificado a un espectro objetivo, si una trama actual no es recibida por la interfaz receptora (1210) o si la trama actual es recibida por la interfaz receptora (1210) pero está alterada, donde el espectro modificado comprende una pluralidad de muestras de señales modificadas, donde, para cada una de las muestras de señales modificadas del espectro modificado, un valor absoluto de dicha muestra de señal modificada es igual a un valor absoluto de una de las muestras de señales de audio del espectro de señales de audio. Aun más, el procesador (1220) está configurado para no desvanecer el espectro modificado al espectro objetivo, si la trama actual de una o más tramas es recibida por la interfaz receptora (1210) y si la trama actual recibida por la interfaz receptora (1210) no está alterada.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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EP13173154 | 2013-06-21 | ||
EP14166998 | 2014-05-05 | ||
PCT/EP2014/063175 WO2014202788A1 (en) | 2013-06-21 | 2014-06-23 | Apparatus and method realizing a fading of an mdct spectrum to white noise prior to fdns application |
Publications (2)
Publication Number | Publication Date |
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MX2015016892A MX2015016892A (es) | 2016-04-07 |
MX351577B true MX351577B (es) | 2017-10-18 |
Family
ID=50981527
Family Applications (5)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MX2015016638A MX347233B (es) | 2013-06-21 | 2014-06-23 | Aparato y método para desvanecimiento mejorado de señal para sistemas de codificación de audio conmutados durante el ocultamiento de errores. |
MX2015016892A MX351577B (es) | 2013-06-21 | 2014-06-23 | Aparato y método para realizar un desvanecimiento de un espectro mdct a ruido blanco antes de aplicar fdns. |
MX2015018024A MX351576B (es) | 2013-06-21 | 2014-06-23 | Aparato y método para desvanecimiento de señal mejorado en diferentes dominios durante ocultamiento de errores. |
MX2015017261A MX355257B (es) | 2013-06-21 | 2014-06-23 | Aparato y método para lograr conceptos mejorados para tcx ltp. |
MX2015017126A MX351363B (es) | 2013-06-21 | 2014-06-23 | Aparato y metodo para generar una forma espectral adaptativa de ruido de confort. |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MX2015016638A MX347233B (es) | 2013-06-21 | 2014-06-23 | Aparato y método para desvanecimiento mejorado de señal para sistemas de codificación de audio conmutados durante el ocultamiento de errores. |
Family Applications After (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MX2015018024A MX351576B (es) | 2013-06-21 | 2014-06-23 | Aparato y método para desvanecimiento de señal mejorado en diferentes dominios durante ocultamiento de errores. |
MX2015017261A MX355257B (es) | 2013-06-21 | 2014-06-23 | Aparato y método para lograr conceptos mejorados para tcx ltp. |
MX2015017126A MX351363B (es) | 2013-06-21 | 2014-06-23 | Aparato y metodo para generar una forma espectral adaptativa de ruido de confort. |
Country Status (19)
Country | Link |
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US (15) | US9978376B2 (es) |
EP (5) | EP3011563B1 (es) |
JP (5) | JP6201043B2 (es) |
KR (5) | KR101788484B1 (es) |
CN (9) | CN105359210B (es) |
AU (5) | AU2014283124B2 (es) |
BR (2) | BR112015031180B1 (es) |
CA (5) | CA2913578C (es) |
ES (5) | ES2639127T3 (es) |
HK (5) | HK1224009A1 (es) |
MX (5) | MX347233B (es) |
MY (5) | MY181026A (es) |
PL (5) | PL3011557T3 (es) |
PT (5) | PT3011558T (es) |
RU (5) | RU2675777C2 (es) |
SG (5) | SG11201510353RA (es) |
TW (5) | TWI553631B (es) |
WO (5) | WO2014202789A1 (es) |
ZA (1) | ZA201600310B (es) |
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