[vorbis-dev] lossless ogg encoding with good compression rate

[Tom Felker]

On Mon, 2003-06-30 at 15:37, 8ut3ww302 at sneakemail.com wrote:
> Vorbis + error may not be a good way to do lossless compression, but has 
> anybody put any thought into a DCT- or wavelet-base lossless 
> compression?  Just curious, my understanding is that existing lossless 
> codecs are based on one form or another of predictive coding and an 
> error correction.  Would some sort of integer transform (I can see 
> floats being evil in a lossless situation) provide decent compression?
> 
> Andrew

I agree that this might be very interesting.  I was once compressing
audio made by a program that was just a mix of several sine waves, and
Vorbis did at least 10 times better than usual, but FLAC was exactly the
same.  My point is that (from what little I understand of DCT), for some
types of music and sound, it could be very efficient.


-- 

Tom Felker

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