[vorbis] just an idea about quality evaluation

[Christian.Buchner]

> Then decoded ogg to wav and inverted it's phase. When mixing the original
> wav with the phase-inverted decoded ogg-file, any identic parts of compressed and
> uncompressed audio should be eliminated. 
> Of course there's always a "rest" of sound because the encoder is not lossless.
> Could this "rest" be an indicator for the quality of the encoder ?

The best encoder according to this indicator would be the one
creating the least mean square error in either the frequency or
the time domain.

That encoder is simple to write. But it would sound like shit ;)

Hence your indicator must be flawed.

Christian

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