pho: [Fwd: [vorbis] new MS codecs]

[Dan Hollis]

On Thu, 14 Dec 2000, Segher Boessenkool wrote:
> > Of course, I think it just boils down to 'Microsoft has an odd
> > definition of CD quality".
> Actually, they say "near CD quality", which probably means
> "strictly less than CD quality".
> What kind of codec is the WMA? MDCT, wavelet, vertor quant, whatever?

WMA seems to have quite limited applications. It's limited to bitrate of
5kbps-128kbps. It seems some hardware vendors are starting to produce DSP
chips with WMA, so they must be convinced enough about its industrial and
embedded applications.

The only technical detail I have been able to find about WMA codec is that
it supposedly uses vector quantization like TwinVQ.

What kind of patents are there for wavelet transform in audio
applications?

-Dan

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