Re: [MP3 ENCODER] efficiently do multiple bitrates at once?

[Greg Maxwell]

On Mon, 19 Jun 2000, Segher Boessenkool wrote:

[snip]
> > is different and frequency distribution is different due to filters.
> 
> You first filter and _then_ do the psycho acoustics? That's broken, IMHO.
[snip]

I don't agree, in MP3 the psycho acoustics are there to determine masking
of distortion. I.e. I can handle 3db of noise in SFB4 because SFB5 is X
loud and the distortion will be inaudiable. If you calculate the psycho
acoustics before filtering you might assume masking that doesn't exist.

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