Converting ulaw to VBR mp3

Dr G goateye at
Wed Mar 16 17:52:59 MST 2005

a better lame setting is this:

lame --preset standard temp.wav  temp.mp3

--preset standard is the same as r3mix, but 128 min...

On Wednesday 16 March 2005 15:15, Hans Fugal wrote:
> On Wed, 16 Mar 2005 at 15:08 -0700, Lars Rasmussen wrote:
> > I have several files I need to convert from ulaw to VBR mp3.
> >
> > lame was unable to deal with these ulaw files directly, so I'm making
> > an intermediary file.
> >
> > These two commands seem to do what I want, starting with ulaw file
> > 15146282.wav:
> >
> > mplayer -V 15146282.wav -vo null -vc dummy -ao pcm -aofile temp.wav
> > lame --r3mix temp.wav 15146282.mp3
> You are of course welcome to use mplayer if you like, but I'd do this
> with sox.
> sox foo.wav <options to get it into the format lame wants> temp.wav
> lame --r3mix temp.wav foo.mp3
> Lame may even take a wave on stdin and sox could output to stdout, so
> you could pipe them together without the temporary file. That's not
> going to make as much difference as using sox instead of mplayer, I'm
> guessing.
> Insert obligatory plug for ogg instead of mp3 here. I'm assuming you
> really do want mp3 for some real, if unfathomable, reason.

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