Michael Vogel wrote:
Hi!
The encoding, decoding and recoding cost cpu time, that's sure. But does this time differs much depending on the used codec?
Is - for example - a G729 faster than a GSM codec?
Bye!
Michael
They vary a lot. G.729 is pretty slow. iLBC and speex in the same ballpark. G.723.1 even slower. GSM 06.10 is reasonably fast.
Encode usually takes a low longer than decode - maybe 3 to 6 times, depending in the codec. One encode + one decode of G.723.1 is nearly 20MIPs on a DSP chip. Multiply that by maybe 5 or 6 for MIPs on a Pentium. G.729 is maybe 11 DSP MIPs.
Regards, Steve
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