[asterisk-users] Sox and bad quality when converting to 8 kHz

[Ishfaq Malik]

On Thu, 2011-03-24 at 21:58 +0100, Thomas Winter wrote:
> Hi list,
> I have an 44100 Hz file with human voice, stereo with 16Bit.
> When convertig this to 8 kHz, mono I loose a lot of quality and have 
> some ground noise. I tried several sox options but without success.
> Can somebody help....
> 
> best regards Thomas
> 
> 
The best results I have had have been by using the following

mpg123 -q -w "${TEMP}" "${INPUT}"
sox "${TEMP}" -c 1 -s -r 8000 "${OUTPUT}"

Regards

Ish

-- 
Ishfaq Malik
Software Developer
PackNet Ltd

Office:   0161 660 3062