[Speex-dev] Speex optimization and 12 bits conversion for 12 bits ADC

[Cheng Rong]

Hi, all,

I am porting speex on ARM7TDMI, I have done some optimization, the
result is that the encoder and decoder need about 60 MCPS for 5.96kbps
bitrate and complexity 0. Can someone give me informtion about Speex
optimization on ARM7?

Another question, my ADC and DAC are 12 bits, but Speex codec is
16bits, Did someone try to modify speex to 12 bits? I think if I
modify speex to 12 bits, the computation power will be reduced, is it
right? and If it's feasible, How can I do? My application is wireless,
for 12bits ADC, which bitrate is siutable for wireless application,
5.95kbps or 8kpbs?

Any suggestions or comments will be appreciated, thanks.


Best Regards,
Cheng Rong