AR098125A2 - AUDIO CODE AND DECODER TO CODIFY AND DECODE AUDIO SCREENS, METHOD FOR CODING AND DECODING AUDIO SCREENS AND COMPUTER PROGRAM - Google Patents
AUDIO CODE AND DECODER TO CODIFY AND DECODE AUDIO SCREENS, METHOD FOR CODING AND DECODING AUDIO SCREENS AND COMPUTER PROGRAMInfo
- Publication number
- AR098125A2 AR098125A2 ARP140103934A ARP140103934A AR098125A2 AR 098125 A2 AR098125 A2 AR 098125A2 AR P140103934 A ARP140103934 A AR P140103934A AR P140103934 A ARP140103934 A AR P140103934A AR 098125 A2 AR098125 A2 AR 098125A2
- Authority
- AR
- Argentina
- Prior art keywords
- encoder
- audio
- audio samples
- aliasing
- rule
- Prior art date
Links
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- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
Un codificador de audio y un método para codificar muestras de audio que comprende: un primer codificador introductor de aliasing en dominio de tiempo para codificar muestras de audio en un primer dominio de codificación, en donde el primer codificador introductor de aliasing en dominio de tiempo tiene una primera regla de tramado, una ventana de inicio y una ventana de detención; un segundo codificador para codificar muestras en un segundo dominio de codificación, en donde el segundo codificador es un codificador del tipo CELP (CODE-EXCITED LINEAR PREDICTION) y tiene un número de muestras de audio de tamaño de trama predeterminado, y un período de puesta a punto de un número de muestras de audio de periodo de puesta a punto, experimentando el segundo codificador durante dicho período ruido de cuantizado aumentado, teniendo el segundo codificador una segunda regla de tramado diferente, en donde una trama del segundo codificador es una representación codificada de un número de muestras de audio posteriores en el tiempo, y el número es igual al número de muestras de audio de tamaño de trama predeterminado; y un controlador para conmutar del primer codificador al segundo codificador y viceversa, en respuesta a una característica de las muestras de audio, y para modificar la segunda regla de tramado en respuesta a la conmutación, en donde el primer codificador introductor de aliasing en el dominio del tiempo está adaptado para utilizar una ventana de inicio y/o una ventana de detención que tiene una parte de aliasing y una parte libre de aliasing, en donde el controlador está adaptado para, en respuesta la conmutación, modificar la segunda regla de tramado de tal manera que la primera trama de una secuencia de tramas del segundo codificador comprende una representación codificada de una muestra procesada en la parte libre de aliasing del primer codificador. El presente comprende un decodificador y un método para decodificar las señales generadas por el codificador y un programa de computación.An audio encoder and a method for encoding audio samples comprising: a first time domain aliasing introducer encoder for encoding audio samples in a first coding domain, wherein the first time domain aliasing introducer encoder has a first screen rule, a start window and a stop window; a second encoder for encoding samples in a second coding domain, wherein the second encoder is an encoder of the CELP type (CODE-EXCITED LINEAR PREDICTION) and has a number of audio samples of predetermined frame size, and a set period at the point of a number of audio samples of the set-up period, the second encoder experiencing during said period increased quantization noise, the second encoder having a second different frame rule, wherein a frame of the second encoder is an encoded representation of a number of subsequent audio samples in time, and the number is equal to the number of audio samples of predetermined frame size; and a controller for switching from the first encoder to the second encoder and vice versa, in response to a characteristic of the audio samples, and for modifying the second screening rule in response to the switching, wherein the first aliasing introducer encoder in the domain of time is adapted to use a start window and / or a stop window that has an aliasing part and an aliasing free part, wherein the controller is adapted to, in response to the switching, modify the second dithering rule of such that the first frame of a frame sequence of the second encoder comprises an encoded representation of a sample processed in the aliasing-free part of the first encoder. The present comprises a decoder and a method for decoding the signals generated by the encoder and a computer program.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US7985608P | 2008-07-11 | 2008-07-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AR098125A2 true AR098125A2 (en) | 2016-05-04 |
Family
ID=57867934
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ARP140103934A AR098125A2 (en) | 2008-07-11 | 2014-10-20 | AUDIO CODE AND DECODER TO CODIFY AND DECODE AUDIO SCREENS, METHOD FOR CODING AND DECODING AUDIO SCREENS AND COMPUTER PROGRAM |
| ARP140103947A AR098135A2 (en) | 2008-07-11 | 2014-10-21 | AUDIO CODE AND DECODER TO CODIFY AND DECODE AUDIO SCREENS, METHOD FOR CODING AND DECODING AUDIO SCREENS AND COMPUTER PROGRAM |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ARP140103947A AR098135A2 (en) | 2008-07-11 | 2014-10-21 | AUDIO CODE AND DECODER TO CODIFY AND DECODE AUDIO SCREENS, METHOD FOR CODING AND DECODING AUDIO SCREENS AND COMPUTER PROGRAM |
Country Status (1)
| Country | Link |
|---|---|
| AR (2) | AR098125A2 (en) |
-
2014
- 2014-10-20 AR ARP140103934A patent/AR098125A2/en active IP Right Grant
- 2014-10-21 AR ARP140103947A patent/AR098135A2/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| AR098135A2 (en) | 2016-05-04 |
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