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Posted by Doug McDonald on 11/29/07 17:01
Richard Crowley wrote:
> "Doug McDonald" wrote ...
>> Once you get to that point the effect of throwing away info is the same
>> as just adding ordinary noise. People, most people, didn't scream
>> and shout about added noise from tape or LPs. And they didn't talk about
>> "losing information" even though that indeed was what was happening.
>
> Masking existing information is NOT the same as
> throwing it completely away without possibility of
> recovery (i.e. "lossy compression").
But, what most people do not understand, is that masking
by adding white (or pink) noise IS throwing away information,
and is in fact identical to what MP3 compression does if
the residual error of the MP3 is white or pink noise.
>
> Anyone who has cleaned a black-vinyl LP, or used
> Cedar (etc.) to extract a conversation out of the noise
> would agree.
>
>
Cleaning an LP is not for removal of white noise ...
it's very very far from that.
Doug McDonald
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