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

Hi all,

I purchased the G.726 Test Vectors from ITU. I have written code to 
use these vectors to test my G.726 codec.

So far, I can pass ALL the Test Vectors for the RESET SEQUENCES. 
However, I'm having problem with the HOMING SEQUENCES. I can't get 
any of these Test Vectors that requires HOMING SEQUENCES to pass. 

>From the ITU document (G.726 Appendix II Test Vectors 03/91), it 
specifically mentions by simply appending an additional sequence 
(ex. PCM_INIT.M for m-law or PCM_INIT.A for a-law), that would setup 
the G.726 State Structure to known specific values.

What I am currently doing with the Homing Sequence is that I read it 
off the file, then convert all the ASCII values to HEX, and finally 
I dump everything into a big buffer. Next, I pass this big buffer 
into the encoder portion of the codec and pass in the desired INPUT 
file. When I compare the output of the encoder to the reference 
output, I get mostly errors. Please keep in mind that all RESET 
SEQUENCES tests pass for me.

Please help! Thanks.
Alex

(You need to be a member of speechcoding -- send a blank email to speechcoding-subscribe@yahoogroups.com )