[Flac-dev] Re: nice idea

[Josh Coalson]

--- Hod McWuff <hod at wuff.dhs.org> wrote:
> On Fri, 2002-10-04 at 10:26, Marco "elcabesa" Belli wrote:
> > oversampling.. i maean digitally change the wave file rate form
> 44khz to 440 
> > khz
> > 
> > it make next sample easyer predictable
> 
> OK, IANASPE (signal processing engineer) but it seems to me that if a
> simple shift like that can improve the compression ratio, then
> shortening the default block size will have the same effect.

seems like it would, unless the dictionary overhead was
significantly less than the FLAC frame overhead.

as an experiment it is interesting but is probably not
practical wrt. FLAC.  it doesn't sound like it would be
an improvement since you are multiplying the input size
by 10 in exchange for making it more predictable.  even
if it does work, oversampling in the encoder and the
inverse in the decoder are expensive.

Josh


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