Wakt wrote :
> > One web site that did concern me was
> > http://www.avisoft-saslab.com/compression/compression.htm
> >
> > but I assume you are ware of this one.
>
> That's Raimond's attempt at analyzing on paper something he's no
> experience with. He heavily overstates his case. And he uses a
> contrived test with sounds no animal or group of animals would ever
> produce. Testing mp3 compression as if it was ATRAC. Kind of like saying=
> Fords and Chevys are exactly the same, something that might get you shot=
> around these parts.
Sure, such extreme artificial sounds will never occur in animals. But I
think that it is valid to demonstrate the worst case. This will enable you =
to
better understand what's really going on in lossy compression systems. Once=
you
know the potential artifacts, you would be able to identify them in your ow=
n
recordings.
I made these tests certainly in response to Walt's statements on that
subject. Please note that there is also a test on ATRAC, not only MP3! Actu=
ally, it
turned out that MP3 adds less distortion than ATRAC (at least in these
artificial test signals).
Finally I have also added a comparison on real bird sounds (the test
conducted by Jeremy Minns).
Regards,
Raimund
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