[LAD] Better lossless compressions?

Philipp Überbacher hollunder at lavabit.com
Tue Jun 22 09:01:10 UTC 2010


Excerpts from Jens M Andreasen's message of 2010-06-22 08:36:53 +0200:
> 
> On Mon, 2010-06-21 at 22:55 -0400, Gene Heskett wrote:
> > And is there a snowballs chance in hell that this is un-encumbered?
> > 
> > <http://electronicdesign.com/tabid/57/default.aspx?topic=algorithm_delivers_lossless_compression_to_adc_samples&catpath=&fltrTitle=&fltrSummary=&fltrPublication.aspx?nl=1>
> > 
> 
> from TFA:
> 
> : Implemented in a DSP chip or microprocessor, this simple compressor
> : requires about 50 instructions per sample. However, lossless
> : compression ratios fall between 1.3:1 and 2:1 on baseband signals.
> 
> So a size of 75% expected and on occasion down to 50% after compression.
> How is that compared to existing implementations?
> 
> 
> -- 
> jedes mal wenn du eine quintparallele verwendest
> tötet bach ein kätzchen.
> 
> http://www.youtube.com/watch?v=43RdmmNaGfQ

Typical lossless codecs manage to get typical music down to about at
most 50-60%, here's a graph and stuff:
http://web.inter.nl.net/users/hvdh/lossless/lossless.htm

-- 
Regards,
Philipp

--
"Wir stehen selbst enttäuscht und sehn betroffen / Den Vorhang zu und alle Fragen offen." Bertolt Brecht, Der gute Mensch von Sezuan




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