Hi,
I'm workin on a Speech Recognition Project and do some tests with different Speech Codecs. I'm simulating a lossy UDP-Transmission and therefor I need to know which part of the Speex-File shouldn't get destroyed (i.e transmitted over a error-free channel). I already transmit the Speex-Header without errors but the decoded files look like something digital and doesn't have anything in common with the PCM-Files. Then I tried to find the OGG-Headers in the file but I couldn't find them (the Identifier is "OggS" right?)

Thanks a lot

Franki

I forgot:
I'm using the command line speexencoder and -decoder version 1.2 beta 2

Ogg is not meant to be transported over a lossy channel like UDP. If you want to use Speex over such channel, use RTP encapsulation instead. There's an IETF draft about it. Alternatively, you can just send the packets over UDP and handle everything yourself.

Hi,
Thanks for your answer. My problem is that i use the command-line encoder/decoder, which has Ogg as output format. How can I convert this into rtp or change the output format?

Easy. Stop using the Ogg encoders. There's a sample program called speexclient that shows how to use the Speex library to build a (very, very) simple VoIP client.

Hi,
I never did anything in C. Is there maybe the same program for JSpeex?