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

[Arnar Mar Hrafnkelsson]

Consider the following... You have a noisy old recording.  The dynamic
range of the actual music may only extend to 10kHz, the noise however can
go up to 15kHz.  If the codec lowers the frequency range of the recording
downto 10kHz before encoding it has effectively removed noise while
leaving actual data in place.  The reproduction will be different but it
might sound better.

-- Arnar.

On Wed, 9 May 2001, Robert Voigt wrote:

> On Wednesday 09 May 2001 21:10, Greg Mayer wrote:
> > The idea, I think, is since certain frequencies and sounds are outside of
> > the range of human hearing, then why bother carrying that information along
> > in the signal when it can be suppressed with no noticeable effect on the
> > outcome.  So if you get rid of that information and use the available space
> > (as Lourens suggested) for higher resolution storage of the information
> > that you can hear, then the sound quality can be improved.
> 
> This does not convince me. A perceptual coder cannot increase resolution of 
> any portion of the original recording, it can only take what's already there 
> no matter how many bits it allocates for the important information. 
> 
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