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Comparison The
following table compares the performance of most of the popular lossless
compressors. |
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Sort
by Efficiency | Sort
by Compression | Sort by Speed Compressor Efficiency*
Time
for Album (650 MB) Compression:
Size of Album (650 MB) / % WavPack
3.8b (fast) 197.6
1.2
min 392.3
MB / 60.4% Monkey’s
Audio 3.90b1 (fast) 211.6 1.5
min 369.9
MB / 56.9% LPAC
3.03 (fast) 196.7
1.6
min 388.4
MB / 59.8% Monkey’s
Audio 3.90b1 (normal) 221.6
1.7
min 353.9
MB / 54.5% WavPack
3.8b (normal) 196.2
1.7
min 388.1
MB / 59.7% Shorten
3.1 194.8
1.9
min 388.2
MB / 59.7% Monkey's
Audio 3.90b1 (high) 222.9
2.1
min 348.3
MB / 53.6% WavPack
3.8b (high) 207.7
2.1
min 369.1
MB / 56.8% FLAC
0.1 (default) 207.2 2.9
min 363.7
MB / 56.0% ZIP
(Winrar 2.70, max) 42.5 2.9
min 591.3
MB / 91.0% Monkey's
Audio 3.90b1 (extra high) 218.0
4.1
min 342.5
MB / 52.7% LPAC
3.03 (extra high – not random access) 211.1
5.0
min 348.5
MB / 53.6% RKAU
1.07 (fast) 210.9
5.4
min 347.4
MB / 53.5% RAR
(Winrar 2.70, max with “–mm”) 169.3
8.0
min 400.9
MB / 61.9% RKAU
1.07 (normal) 203.0
9.8
min 347.6
MB / 53.5% RKAU
1.07 (high) 191.5
24.0
min 348.3
MB / 53.6% All tests were run
on a 1.2 AMD Athlon with 128mb of ram
under Windows 2000. Results
based on a sample of 3 songs
representing a wide spectrum of music: Note: several "second-tier"
lossless compressors have been excluded from this comparison because they
are no longer being developed and they don't really
* Efficiency tries to evaluate the trade-off between speed and compression. The idea is to analyze how much "bang" you get for the time you wait while compressing. If you wait a long time but don't get good compression, that's poor efficiency. If it goes super fast, but you don't get hardly any compression, that's bad efficiency too. The idea is to try to strike a good balance between speed and compression. Obviously, rating efficiency is somewhat subjective because it depends on how long you're willing to wait for extra space savings... hopefully you'll agree that this equation is at least somewhat fair. (Mathematically, efficiency can be described: [Efficiency] = ([MB Saved]16 / [Seconds])(1/16) ) |
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