[vorbis-dev] Can compressed music sound better than uncompressed?

[Rok Pape¾]

Hi!

On Wednesday 09 May 2001 20:45, Lourens Veen wrote:

> Interesting thought I think. It's important to remember that
> uncompressed does not mean perfect quality. According to the Shannons
> sampling theorem any frequencies smaller than 0.5*samplerate (the
> Nyquist frequency) are encoded in the signal, higher frequencies are cut
> off. 

The "higher" frequencies don't get cut-off.. they get aliased/translated
to lower freqencies and you get garbage. That's why you have to add
analog low-pass filter to ADC before sampling if you are unsure whether
the input signal contains frequencies bigger than 0.5*sample_rate.

If you remove signal components you make it sound different. Now if 
that difference is more "nice" for you than the original signal well... 
it's a psychological or something..., not a technical term.

I prefer unmodified signal so *I* can modify it in a way it suits me. :-)


-- 
best regards,
Rok Pape¾.

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