CL2011001717A1 - Sistema y método para la generación de una señal de alta frecuencia desde un componente de baja frecuencia de la señal; sistema para decodificar una señal; caja para decodificar una señal. - Google Patents
Sistema y método para la generación de una señal de alta frecuencia desde un componente de baja frecuencia de la señal; sistema para decodificar una señal; caja para decodificar una señal.Info
- Publication number
- CL2011001717A1 CL2011001717A1 CL2011001717A CL2011001717A CL2011001717A1 CL 2011001717 A1 CL2011001717 A1 CL 2011001717A1 CL 2011001717 A CL2011001717 A CL 2011001717A CL 2011001717 A CL2011001717 A CL 2011001717A CL 2011001717 A1 CL2011001717 A1 CL 2011001717A1
- Authority
- CL
- Chile
- Prior art keywords
- signal
- decode
- sub
- high frequency
- low frequency
- 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
- G10L21/00—Processing of the speech or voice signal 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 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
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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
- G10L19/26—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 OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Processing of the speech or voice signal 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
- G10L21/0388—Details of processing therefor
-
- 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
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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
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/90—Pitch determination of speech signals
Abstract
LA PRESENTE INVENCIÓN TIENE RELACIÓN CON SISTEMA DE CODIFICACIÓN DE AUDIO QUE HACE USO DE UN MÉTODO DE TRANSPOSICIÓN ARMÓNICA PARA RECONSTRUCCIÓN DE ALTA FRECUENCIA (HFR). SE DESCRIBE UN SISTEMA Y UN MÉTODO PARA GENERAR UN COMPONENTE DE ALTA FRECUENCIA DE UNA SEÑAL DE UN COMPONENTE DE BAJA FRECUENCIA DE LA SEÑAL. EL SISTEMA COMPRENDE UN BANCO DE FILTRO DE ANÁLISIS PROPORCIONANDO UNA PLURALIDAD DE SEÑALES DE ANÁLISIS DE SUB BANDAS DEL COMPONENTE DE BAJA FRECUENCIA DE LA SEÑAL. TAMBIÉN COMPRENDE UNA UNIDAD DE PROCESAMIENTO NO LINEAL PARA GENERAR UNA SEÑAL DE SÍNTESIS DE SUB BANDA CON UNA FRECUENCIA DE SÍNTESIS MODIFICANDO LA FASE DE UNA PRIMERA Y UNA SEGUNDA DE UNA PLURALIDAD DE SEÑALES DE ANÁLISIS DE SUB BANDAS Y COMBINANDO LAS SEÑALES DE ANÁLISIS DE SUB BANDAS DE FASE MODIFICADA. FINALMENTE, COMPRENDE UN BANCO DE FILTRO DE SÍNTESIS PARA GENERAR EL COMPONENTE DE ALTA FRECUENCIA DE LA SEÑAL DESDE LA SEÑAL DE SÍNTESIS DE SUB BANDA.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14522309P | 2009-01-16 | 2009-01-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CL2011001717A1 true CL2011001717A1 (es) | 2012-07-20 |
Family
ID=42077387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CL2011001717A CL2011001717A1 (es) | 2009-01-16 | 2011-07-14 | Sistema y método para la generación de una señal de alta frecuencia desde un componente de baja frecuencia de la señal; sistema para decodificar una señal; caja para decodificar una señal. |
Country Status (21)
| Country | Link |
|---|---|
| US (7) | US8818541B2 (es) |
| EP (8) | EP3598445B1 (es) |
| JP (2) | JP5237465B2 (es) |
| KR (2) | KR101256808B1 (es) |
| CN (2) | CN103632678B (es) |
| AU (1) | AU2010205583B2 (es) |
| BR (3) | BR122019023684B1 (es) |
| CA (7) | CA2926491C (es) |
| CL (1) | CL2011001717A1 (es) |
| ES (7) | ES2904373T3 (es) |
| HK (1) | HK1162735A1 (es) |
| MX (1) | MX2011007563A (es) |
| MY (1) | MY180550A (es) |
| PL (6) | PL3598445T3 (es) |
| RU (5) | RU2495505C2 (es) |
| SG (1) | SG172976A1 (es) |
| TR (1) | TR201910073T4 (es) |
| TW (2) | TWI430264B (es) |
| UA (1) | UA99878C2 (es) |
| WO (1) | WO2010081892A2 (es) |
| ZA (1) | ZA201105923B (es) |
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