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
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