[vorbis-dev] Thought for the new year

Gregory Maxwell greg at linuxpower.cx
Wed Dec 27 16:41:22 PST 2000

On Thu, Dec 28, 2000 at 01:11:00AM +0100, Segher Boessenkool wrote:
> By "good for coding" I don't mean quality, of course; we're talking
> about a transform for compression here, so a "good" transform is one
> that makes it easier to compress, i.e. it should group the features
> of the sound together based on some sensible norm. MDCT uses a window
> that doesn't change size for differing frequencies; that's no good for
> a perceptual codec.

But it is quite good from a pure lossless, compact representation

Ideally what you want to model is the human perceptual response to signal.
All we need to do is take a living human ear, and the appropriate 'chunk of
brain', plug it's output back into the computer to create a 'human ear
transform'. :)

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