AR072424A1 - AUDIO CODE AND DECODER FOR CODING AND DECODING FRAMES OF A SAMPLE AUDIO SIGNAL - Google Patents
AUDIO CODE AND DECODER FOR CODING AND DECODING FRAMES OF A SAMPLE AUDIO SIGNALInfo
- Publication number
- AR072424A1 AR072424A1 ARP090102438A ARP090102438A AR072424A1 AR 072424 A1 AR072424 A1 AR 072424A1 AR P090102438 A ARP090102438 A AR P090102438A AR P090102438 A ARP090102438 A AR P090102438A AR 072424 A1 AR072424 A1 AR 072424A1
- Authority
- AR
- Argentina
- Prior art keywords
- audio
- frames
- prediction domain
- frame
- domain
- Prior art date
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- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
Un codificador de audio (10) adaptado para codificar tramas de una senal de audio muestreada para obtener tramas codificadas, en donde una trama comprende un numero de muestras de audio de dominio de tiempo. El codificador de audio (10) comprende una etapa de análisis de codificacion predictiva (12) para determinar informacion sobre coeficientes de un filtro de síntesis y una trama de dominio de prediccion basada en una trama de muestras de audio. El codificador de audio (10) además comprende un transformador introductor de aliasing en tiempo (14) para transformar tramas de dominio de prediccion superpuestas a la frecuencia de dominio para obtener espectros de trama de dominio de prediccion, en donde se adapta el transformador introductor de aliasing en tiempo (14) para transformar las tramas del dominio de prediccion superpuestas de una manera muestreada críticamente. Asimismo, el codificador de audio (10) comprende un codificador reductor de redundancia (16) para codificar espectros de trama de dominio de prediccion para obtener las tramas codificadas en base a los coeficientes y los espectros de trama de dominio de prediccion codificada.An audio encoder (10) adapted to encode frames of an audio signal sampled to obtain encoded frames, wherein a frame comprises a number of time domain audio samples. The audio encoder (10) comprises a predictive coding analysis stage (12) for determining information about coefficients of a synthesis filter and a prediction domain frame based on a frame of audio samples. The audio encoder (10) also comprises a time-aliasing introducer transformer (14) to transform prediction domain frames superimposed on the domain frequency to obtain prediction domain frame spectra, where the input introducer transformer is adapted aliasing in time (14) to transform overlapping prediction domain frames in a critically sampled manner. Also, the audio encoder (10) comprises a redundancy reducing encoder (16) for encoding prediction domain frame spectra to obtain the encoded frames based on the coefficients and the encoded prediction domain frame spectra.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US7986208P | 2008-07-11 | 2008-07-11 | |
| US10382508P | 2008-10-08 | 2008-10-08 | |
| US08017661A | 2008-10-08 | 2008-10-08 | |
| PCT/EP2009/004015 WO2010003491A1 (en) | 2008-07-11 | 2009-06-04 | Audio encoder and decoder for encoding and decoding frames of sampled audio signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AR072424A1 true AR072424A1 (en) | 2010-08-25 |
Family
ID=42751796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ARP090102438A AR072424A1 (en) | 2008-07-11 | 2009-06-30 | AUDIO CODE AND DECODER FOR CODING AND DECODING FRAMES OF A SAMPLE AUDIO SIGNAL |
Country Status (1)
| Country | Link |
|---|---|
| AR (1) | AR072424A1 (en) |
-
2009
- 2009-06-30 AR ARP090102438A patent/AR072424A1/en active IP Right Grant
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