[clug] Free Lossless Audio Codec

[David Gibson]

On Thu, Jun 17, 2004 at 12:39:42AM +1000, David wrote:
> Hi all,
> I have been using flac for a few years now to backup my CD collection.
> To give you a real world example of the compression, I wrote a little
> program to calculate some statistics, the results are:
> 
> albums: 334
> uncompressed bytes: 181292672736
> compressed bytes: 117164817673
> best: 0.439121(Kyuss - And the Circus Leaves Town.flac)
> worst: 0.768185(Green Day - Insomniac.flac)
> avg comp: 0.646274
> 
> (The uncompressed size is an approximation based on no. of samples *
> bits per sample) actual uncompressed size may be a bit larger due to wav
> headers etc)
> 
> Average compression ratio is around 0.65, not quite as good as 2:1, but
> still saves me >60GB as you can see.

Heh.. that's surprisingly poor.  My intuition would have been that you
could do better with basic techniques on audio files.  So much for
intuition.

-- 
David Gibson			| For every complex problem there is a
david AT gibson.dropbear.id.au	| solution which is simple, neat and
				| wrong.
http://www.ozlabs.org/people/dgibson