[Asterisk-Users] Record() and problems converting with sox.

[Nick Barnes]

Kevin P. Fleming
> This means exactly what it says. You have asked for the 
> output sample rate to be 8KHz, so apparently the input sample 
> rate must _already_ be 8KHz, which means there is no 
> resampling required.

Indeed. This much is obvious.

> Since you said that the input file was recorded using the 
> Record() app, then it's guaranteed that the input file is 
> already 8Khz sample rate, since that's all Asterisk can generate.

Which doesn't resolve my problem. How do I convert a wav (or ulaw, or alaw
or whatever) to gsm? The example given on the wiki clearly doesn't work.

Cheers,

Nick.