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I elided the hour or so spent trying to figure out what Power PAQ was. Google has no results for PAQ804; as the writeup says, a teammate eventually Binged it. I

I elided the hour or so spent trying to figure out what Power PAQ was. Google has no results for PAQ804; as the writeup says, a teammate eventually Binged it. I also elided the debugging needed to get the FFT to work (but you need to know what the decompressor is before deciding that it doesn't work!). I had commented out the line that applies a Hamming window to the FFT because I didn't understand it, but it didn't work right until I added the window. My theory is that it worked OK until the "background" (i.e., the song) got louder.

adamzochowski 16y ago
PAQ is a series of compression algorithm tests led by Matt Mahoney and a ton of compression enthusiasts who keep tweaking PAQ algorithm (be it for better memory use/speed or most importantly: compression ratio on a corpus). Checkout their fabulous journey at http://mattmahoney.net/dc/ http://mattmahoney.net/dc/ PAQ804 says that it is fourth modification to the initial PAQ8 archiver.