[vorbis] Format converters

[Monty]

On Sun, Sep 15, 2002 at 02:45:34PM +0200, Sebastian Gesemann wrote:
> On Sat, 14 Sep 2002, Monty wrote:
> 
> > On Mon, Aug 19, 2002 at 01:06:01PM -0100, fungus wrote:
> > > On a totally unconnected note....is it not possible
> > > to convert from mp3 to vorbis without leaving the
> > > frequency domain? That would imply much less loss
> > > then converting mp3->wav->ogg.
> > 
> > It is not possible.  The blocksizes are incompatible.
> 
> The problem is the quantizing step to 16 bit while saving
> the wav file - NOT the transform, the transform itself isn't
> lossy.

Depending on how you look at it.  Because the blocksizes are
incompatable, one requires a reverse and forward transform, and that's
suddenly when the previous quantization sends everything to hell.
Nothing is irreversable... until the transform.

Monty
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