ara-fat32
Nov 22 2002, 19:56
Hell oh
I would like to publish an idea the audio compression around the factor 1:50 will make possible, and in CD quality. The SOURCE file is filtered first Psychoaccoustic, compressed afterwards by means of a fractal compression algorhytm. The model works momentarily only to computational, since the cost of computation for fractals is still extremely high compression. But by so-called Distributed Computing, also this problem one solves, and in foreseeable future also Consumer PC's will sufficient fast count. The pallet of applications is very wide, it can movies in full Pal quality over a 64KB ISDN line be e.g. broadcasted. By a combination of Mpeg4 algorhytms and Fractal compression. Is momentarily still future, but it will drastically lower the transponder costs of full elite operator. In addition mobile telephones on 1200 Bps PCM, could reduction, in order eight times more discussions over a cell to offer . In addition the S/N improves ratio, and therefore to better receipt, and lower current consumption by the reduced speed. There are very many ranges of application by fractal geometry, e.g. antennas a dipole by a Fractal of the structure around 1/3 made smaller is however the same electrical characteristics as "more normally" a dipole exhibits. In addition this antenna does not need any coils or maching condensers.
So i hope there is any developer with knowledge of several mathematics.
Heh... I believe it when I see it...
gnoshi
Nov 22 2002, 20:49
I will bounce it off my housemate who is doing honours in quantum and chaos math
tangent
Nov 22 2002, 23:22
Let's see some real working fractal image compression first before even considering audio.
I want to be called a full elite operator some day.
I agree there is "potential", in the same sense that there's "potential" in the image compression domain. There's just nothing much to speak of in terms of workable implementations.
-h
Sachankara
Nov 23 2002, 02:57
QUOTE(tangent @ Nov 23 2002 - 06:22 AM)
Let's see some real working fractal image compression first before even considering audio.
Yep... I've seen the current fractal image compression algorithms and they aren't worth much... Worse than standard JPEG... Larger files, worse quality and it also takes several minutes just to save one tiny image...
Jasper
Nov 23 2002, 03:53
I don't entirely agree with Sachankara, I have a little program called Fractal Imager that creates .fif files that CAN be considerably smaller than jpgs, while still having more or less the same quality. Also, I happen to prefer the artifacts it creates over the ones jpg produces.
But, it does indeed take a very long time to compress the files, and the quality/size ratio is very dependent of the image that is compressed (some times it is much smaller than the equivalent jpg, some times it is much larger).
All in all, I think fractal compression could be very interesting, although I am also a bit sceptical about 1:50 ratio claims (and that is an understatement).
sven_Bent
Nov 23 2002, 03:54
QUOTE(tangent @ Nov 23 2002 - 06:22 AM)
Let's see some real working fractal image compression first before even considering audio.
is fractal compression the same as wavelets ?
cause wavelets compression are done in luraware (.lwf) at www.luratech.com
and in jpeg2000
and both giver much better quality/bits then ordinary jpeg's
Jasper
Nov 23 2002, 04:08
No wavelets are something else, wavelets are used for a similar task as an FFT, they break-up a file in different "frequency" bands, so a file can be encoded more efficiently. And fractal compression (as for as I know at least) tries to describe data with (complex) algorithms.
Dibrom
Nov 23 2002, 04:11
QUOTE(Sachankara @ Nov 23 2002 - 01:57 AM)
QUOTE(tangent @ Nov 23 2002 - 06:22 AM)
Let's see some real working fractal image compression first before even considering audio.
Yep... I've seen the current fractal image compression algorithms and they aren't worth much... Worse than standard JPEG... Larger files, worse quality and it also takes several minutes just to save one tiny image...
Have you ever seen FIASCO?
http://www.linuxjournal.com/article.php?sid=4367I messed with it a little awhile ago, not a whole lot, but it seemed to be at least decent. It's supposed to be competitive with JPEG2000 I believe, and it can do video also. The author seemed to have pulled the sources awhile ago though, not sure if they are available again or not.
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