[music-dsp] Looking for sample prediction code

[Cournapeau David]

    It doesn't really remove redundancy ( there is huffman code, but it
removes 'binary' redundancy, not really the musical signal itself ).
    In fact, it depends on what you're calling redundancy. For example, with
speech signals, you can encode in 1 kbits\s. It removes redundancy, because
the information you consider is what the speaker says, not his way of saying
it !
    The Mp3 is based upon a model of ear ( mask effetc, etc... ). It removes
informations which 'normal' people on 'normal' audio systems cannot really
hear. But there is some loss... to encode a musical signal isn't like
compressing a file into zip...
    The MP3 algorithm itself has no fréquency range, I think. But if you use
16 kbits\s with 44.1 khz, it is very silly, I think. So it is better to
downsampling it before. But i am not sure of this ( please correct me if I
am wrong )

David
--
David Cournapeau
2nd year student at Télécom Paris in DSP and Computer Sciences
212, rue Tolbiac
75013 Paris
France
cournape at enst.fr
----- Original Message -----
From: "Tony K" <bonkrz at yahoo.com>
To: <music-dsp at shoko.calarts.edu>
Sent: Monday, March 04, 2002 11:06 PM
Subject: Re: [music-dsp] Looking for sample prediction code


> > MP3 at 128 Kbps compresses music at 11:1 ratio with pretty good quality.
> > 10 of 11 is MUCH redundancy, tell'ya :)
>
> Correct me if I'm wrong, but doesn't MP3 compression also remove entire
> frequency ranges?  That's not really removing redundancy, is it?
>
> -=-=-=-=-=-=-
> Tony
>
> Hard work has a future payoff. Laziness pays off NOW!
> ----- Original Message -----
> From: "Kirill 'Big K' Katsnelson" <kkm at dtmx.com>
> To: <music-dsp at shoko.calarts.edu>
> Sent: Monday, March 04, 2002 4:04 PM
> Subject: Re: [music-dsp] Looking for sample prediction code
>
>
> > Some time ago, soundgood at web.de wrote...
> > >Though I think most music signals don't have to much redundancy.
> >
> > MP3 at 128 Kbps compresses music at 11:1 ratio with pretty good quality.
> > 10 of 11 is MUCH redundancy, tell'ya :)
> >
> >   -kkm
> >
> >
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