Sign in
Search speechcoding
Subscribe to speechcoding
speechcoding by Keywords
ACELP | ADPCM | AMBE | AMR | AMR-NB | CELP | Codebook | DTMF | G.723 | G.726 | G.729 | GSM | Interpolation | LPC | LSF | LSP | MELP | PCM | Perceptual | Pitch | PSOL | QCELP | Quantization | SMV | VAD | Vocoder
Discussion Groups
Discussion Groups | Speech Coding | EFR Code Book search
Technical discussions related to Speech Coding (all itu and other vocoders, ACELP, CELP, AMR, etc)
EFR Code Book search - ynitin - Jan 15 6:56:00 2002
|
Hi, I am working on porting GSM Enhanced Full Rate (EFR) Speech codec on a customer DSP. Currently We are working on porting ACELP ( Code Book Search ) functions. I observed that the code book searh algorithm implemented in C code is complex and is very difficult to optimize in assembly because of complex address generation required. Algoithmic change in ACELP functions will reduce the complex address generation process and also will reduce the cycle count. If anybody worked on porting the EFR code on TI or any other DSP, Any inputs on changing the C algorithm or any pointers for the same. Regards, Nitin |
(You need to be a member of speechcoding -- send a blank email to speechcoding-subscribe@yahoogroups.com )