[speex-dev] reommended settings for low bitrate voicecom codec ?

Peter Kirk pwk.linuxfan at gmx.de
Mon May 12 15:27:01 PDT 2003


the voice-communication TeamSpeak (www.teamspeak.org) is currently testing a 
version that supports speex codecs. The quality for high bitrates is quite 
BUT, the low-bandwidth speex codecs that are currently used arent very good. 

What I did to find this out:
I comprared a speex AVB with 6.3 KBit/sec (total, overhead for packets and 
stuff included) and the 6.3 Kbit/sec Celp Codec vom hawkvoice (
 http://www.hawksoft.com/hawkvoice) and the result is quite favorable for 
I cant believe that this is *normal* speex behavior, please correct me if that 
hawkvoice thing just performs better on that bandwidth.

Now for my question:

Could you please tell me what options are best for what codec bandwidth ? Im 
figuring something is wrong since speex sounds worse than hawkvoice on the 
low bandwidth...I would appreciate if youd post the *recommended* settings 
for 5, 10, 15 and 20 KBit narrowband AVB speex (used in a voicecom that 
shouldnt take too many cpu cylces of the game).

Please excuse my bad english and thanks in advance for helping
Many people are unenthusiastic about their work.

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