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...is either delivered correct or not at all. If XM is * running speech in * a packet mode, perhaps AMBE is not handing the loss of blocks * of data data * well. This might not be the fault of the codec itself, but * an issue with * the way that it is integrated into the system. * * Speex is unually flexible in its choice of bit and sampling * rates, and you * certainly have the ability to produce higher quality speech * than you can get * from AMBE. But, as Jean-Marc points out, you will need a * higher bitrate to * do this. * * - Jim * * *

Thanks for the reply. We are currently using AMBE (4Kbps) for our Traffic/Weather Channels. If you have ever had a chance to hear the service, you will know that AMBE does not do us well. I understand that 2Kbps is low quality, but any poorer than AMBE? If can get a decent quality for other low bandwidth talk channels, such as about 10-16Kbps and have it sound rather clean, then I would be