RE: [microsound] 100 to one compression?

[David Fodel <DFodel@xxxxxxxxxxxx>]

Just for informational purposes:


Shannon's law: A statement defining the theoretical maximum rate at which
error-free digits can be transmitted over a bandwidth-limited channel in the
presence of noise, usually expressed in the form C = W log2(1 + S /N ),
where C is the channel capacity in bits per second, W is the bandwidth in
hertz, and S /N is the signal-to-noise ratio.
 Note: Error-correction codes can improve the communications performance
relative to uncoded transmission, but no practical error correction coding
system exists that can closely approach the theoretical performance limit
given by Shannon's law.

David Fodel
Publishing Systems Manager
Wild Oats Markets
3375 Mitchell Lane
Boulder, CO 80301
Direct: 720-562-4831
Fax: 303-938-8474


> ----------
> From: 	Ed Hall
> Reply To: 	microsound
> Sent: 	Thursday, January 10, 2002 12:14 AM
> To: 	microsound
> Subject: 	Re: [microsound] 100 to one compression? 
> 
> Similar claims have been made in the past.  None of them have panned out,
> though it may take years before the flaw or scam is apparent.  Even
> legitimate claims of compression breakthroughs, like Fractal compression,
> have turned out to be far less effective in practice than initial claims
> implied.
> 
> But this one is especially bold; voiding Shannon's law, as they claim,
> would be tantamount to voiding the second law of thermodynamics -- not
> inconceivable, but highly unlikely.  The implications would extend far
> beyond just data compression.  But I'm not holding my breath.
> 
> 		-Ed
> 
> 
> 
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