[Asterisk-bsd] mpg123 and asterisk port

[Vahan Yerkanian]

Graham Menhennitt wrote:
> But I can't get sox to convert properly. The files it produces are
> almost silent. You can just hear some very strange "tinny" sounds. The
> only codec I use is ulaw. So I just used "sox input.mp3 output.ul" (I
> also tried "sox input.mp3 -U output.ul"). It must be doing something
> almost right, because if I specify the output file as ".lu" instead I
> just get white noise. So ".ul" files seem to be the right thing. But I
> just don't get any music - just these strange sounds. I don't have
> anything that plays .ul files directly. When I use sox to convert them
> back to mp3 files, and I play them using Windows Media Player, I get the
> same tinny sounds.

The way I converted my 44.1khz / 128kbit / 16bit / stereo mp3 files was:

1. Resampled them to 8khz / 16bit / mono wav files.
2. sox input.wav output.ul

So I used sox to convert format only. Actually you can use Windows/MacOS 
based sound editors for the job too.

HTH,
Vahan