CO6300891A2 - Aparato y metodo para convertir una señal de audio en una representacion parametrizada aparato y metodo para modificar una representacion parametrizada aparato y metodo para sintetizar una representacion parametrizada de una señal de audio - Google Patents
Aparato y metodo para convertir una señal de audio en una representacion parametrizada aparato y metodo para modificar una representacion parametrizada aparato y metodo para sintetizar una representacion parametrizada de una señal de audioInfo
- Publication number
- CO6300891A2 CO6300891A2 CO10115449A CO10115449A CO6300891A2 CO 6300891 A2 CO6300891 A2 CO 6300891A2 CO 10115449 A CO10115449 A CO 10115449A CO 10115449 A CO10115449 A CO 10115449A CO 6300891 A2 CO6300891 A2 CO 6300891A2
- Authority
- CO
- Colombia
- Prior art keywords
- audio signal
- information
- modulation
- parametrized representation
- parametrized
- 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
- G10L19/02—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 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
-
- 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
- G10L19/20—Vocoders using multiple modes using sound class specific coding, hybrid encoders or object based coding
-
- 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
-
- 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
Aparato para convertir una señal de audio en una representación parametrizada, comprende un analizador de señal (102) para analizar una porción de la señal de audio para obtener un resultado de análisis; un estimador de paso de banda (106) para estimar la información de una pluralidad de filtros de paso de banda basados en el resultado de análisis, en donde la información sobre la pluralidad de filtros de paso de banda comprende información en una forma de filtro para la porción de la señal de audio, en donde el ancho de banda de un filtro de paso de banda es diferente de un espectro de audio y depende de la frecuencia central del filtro de paso de banda; un estimador de modulación (110) para estimar una modulación de amplitud (112) o una modulación de frecuencia (114) o una modulación de fase para cada banda de la pluralidad de filtros de paso de banda para la porción de la señal de audio que utiliza la información sobre la pluralidad de filtros de paso de banda; y una interfaz de salida (116) para transmitir, almacenar o modificar información sobre la modulación de amplitud, información sobre la modulación de frecuencia o la modulación de fase o la información sobre la pluralidad de filtros de paso de banda para la porción de la señal de audio.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US3830008P | 2008-03-20 | 2008-03-20 | |
EP08015123.6A EP2104096B1 (en) | 2008-03-20 | 2008-08-27 | Apparatus and method for converting an audio signal into a parameterized representation, apparatus and method for modifying a parameterized representation, apparatus and method for synthesizing a parameterized representation of an audio signal |
Publications (1)
Publication Number | Publication Date |
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CO6300891A2 true CO6300891A2 (es) | 2011-07-21 |
Family
ID=40139129
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CO10115449A CO6300891A2 (es) | 2008-03-20 | 2010-09-17 | Aparato y metodo para convertir una señal de audio en una representacion parametrizada aparato y metodo para modificar una representacion parametrizada aparato y metodo para sintetizar una representacion parametrizada de una señal de audio |
Country Status (16)
Country | Link |
---|---|
US (1) | US8793123B2 (es) |
EP (6) | EP3296992B1 (es) |
JP (1) | JP5467098B2 (es) |
KR (1) | KR101196943B1 (es) |
CN (1) | CN102150203B (es) |
AU (1) | AU2009226654B2 (es) |
CA (2) | CA2867069C (es) |
CO (1) | CO6300891A2 (es) |
ES (5) | ES2895268T3 (es) |
HK (4) | HK1250089A1 (es) |
MX (1) | MX2010010167A (es) |
MY (1) | MY152397A (es) |
RU (1) | RU2487426C2 (es) |
TR (1) | TR201911307T4 (es) |
WO (1) | WO2009115211A2 (es) |
ZA (1) | ZA201006403B (es) |
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2008
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