Stand alone pcm dat preprocessor/filter

[SvenBent]

as i have told before... I'm about to move all my games from physical cd/dvd to images to free up some wall space

many of the older games contains audio tracks, this is an area where 7.zip lacks good compression filter so i have to use winrar for optimal compression.

Now for my question,
is there a stand alone preprocessor/filter that i could use before using 7-zp so that i could utilize 7-zip better lzma compression.

A stand alone filter that works like ECM and REP does (including simple command interface)


i remember sometimes on the 7.zp forum someone made a experimental filter. for wav files. But i'm in search for a filter that works on entire CD images which contains both data and audio tracks

[nimdamsk]

http://www.haskell.org/bz/
DELTA compression preprocessor (C++ application/library)
http://www.haskell.org/bz/delta10.zip

[SvenBent]

Allready using del,rep and ecm as preprocessors/filters

but using Delta only gave a slight compression improvement only around 8mb was shaved of the final rzm. file (maybe Rzm just works good on pcm data in the first place)

anyway delta + rzm beats winrar, with about 36mb (839mb -> 803mb) on my quake2 collection

[Black_Fox]

Bulat has also written MM, but I'm not sure if it can be applied to all data (and not only PCM).

[Bulat Ziganshin]

have you tried TTA from MM package?

[SvenBent]

I Haven't triede TTA yes I'm about to move all my data from my main machine to my server as i need to upgrade my main machine, and therefor clean up the raid array.

but i will try it out in a couple of days