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Chocorific
 Member 6745 Level 38.97 May 2006 
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It's a PAQ algorithm, slow by nature. Interesting that this experimental algorithms have finally found a way into a "mainstream tool" *g*
I remember UHARC giving excellent compression too. I only use 7zip currently, it's opensource and has better ratio than RAR and Zip. With a sane config the compression speed is very good. Most amazing jew boots |
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Chocorific
Member 6745 Level 38.97 May 2006
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That's because RAR does apply specific optimizations to known file formats. You could do the same for 7Zip and add detection of WAV formats, which are then handled by say the FLAC compressor, WAVPack, etc.
LZMA is really not the first choice when it comes to lossless audio compression, but it's a pretty good algorithm for generic data compression. The point is that RAR describes both a proprietary algorithm and a file format / container format. You can't really compare RAR against LZMA. You could however compare the generic RAR algorithm (the one used when no special case handling is done) with LZMA, PPMD, etc. Also the 7zip container format is open, it should be possible to add special case handling, so choosing lossless audio compression for data that benefits from that. It's just a matter of someone to implement this. There's nowhere I can't reach. |
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