On Tue, 2004-01-20 at 23:44, Josh Coalson wrote: > Miroslav did some experiments with searching for optimum blocksize. > from what I remember it made at best a couple percent difference. > there was a thread about it here a while back. > Did his changes make it in? I can think of a coupla ways to approach this and I'd like to hear about what he tried.
A couple of % doesnt seem like much, but considering that flac is lossless, a couple of % here and there adds up to a big savings. > > you can get very close ot arithmetic coding with range coding, > which is much faster and believed to be patent free. monkey's > audio uses range coding as part of its entropy coder. I did > some experiments and couldn't get much of a compression > improvement, but the area is far from exhausted. > I was not aware that arithmetic coding was patented anywhere. The texts I have on the subject don't mention a patent, although that doesn't surprise me. I had considered range coding, but arithmetic is superior in every was except for speed. Having a nice reference encoder that you could then go back to and compare ordered rice or range to I thought would be ideal. Speaking of, I'd be curios as to what texts your recommend on lossless compression. If you are interested, when I get home later today I can tell you what I've read through and what I found worthwile. Lossless compression has always been a hobby for me and I have no formal training on the subject, so anything I can find to read is a great help. I heard that Monky's released source a while back. I'll browse around and take a look at his stuff when I get a chance. Wayde ------------------------------------------------------- The SF.Net email is sponsored by EclipseCon 2004 Premiere Conference on Open Tools Development and Integration See the breadth of Eclipse activity. February 3-5 in Anaheim, CA. http://www.eclipsecon.org/osdn _______________________________________________ Flac-dev mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/flac-dev
