The purpose of the comparison page is not only to show how compression ratios and encoding/decoding times using the flac reference encoder compare to other lossless encoders, but also to compare features (for example, some coders archive only and files must be uncompressed completely before playback can start). Keep a few things in mind:

• As far as I know, only two of the lossless encoders out there (FLAC and WavPack) are both actively developed and truly free (source code for Shorten and Monkey's Audio is available but the licenses are more restrictive). Most others give out free binaries, but without access to the source, you are leaving your data to the whim of the maintainer for eternity; you have no way to port the program to another OS or fix it if it breaks. This can be a serious drawback unless the format has world-class clout (like MP3).
• The compression ratios and times for flac are representative only of the reference encoder. They are not indicative of the limits of all FLAC encoders or the FLAC format itself since the format is open and extensible, and anyone is free to write a better FLAC encoder. And it is almost certain that the reference encoder itself will improve.
• Since FLAC supports streaming, it is at a slight disadvantage to the formats that don't because they don't have the extra overhead of all those frame headers.

I make an effort to keep this information as accurate as possible, but if any of the data is wrong, let me know and I'll correct it. For another comparison (with graphs) of lossless codecs, see here.

Reviewed encoders (besides flac of course):

• Apple Lossless - A new proprietary codec by Apple. Not much is known about it.
• Bonk - An open-source source codec. No player or library support yet.
• Kexis - An open-source source codec. Development seems to have stopped at the alpha stage. No player or library support yet.
• La - A closed source symmetric adaptive codec, with Windows and Linux console binaries. Current king of compression ratios but extremely slow.
• LPAC - A closed source codec. At least it's available for more than just Windows, but there's only a Winamp plugin.
• Monkey's Audio - A symmetric adaptive codec with good compression. Source is available under a non-OSI license. There are two versions available now, one by the original author Matt Ashland and one by Frank Klemm. The one tested here is from the original author.
• Ogg Squish - An open source source codec that is no longer maintained. The version I tested, 0.98, was the latest I could find. I don't have Windows timing results but it is among the 'fast' coders, based on UNIX tests.
• optimFROG - A closed source, Windows/Linux codec, with Winamp and XMMS plugins. Slow but high compression ratios.
• Pegasus-SPS - A closed source, Windows-only codec.
• RKAU - A closed source, Windows-only codec. No update in over two years.
• Shorten - A.J. Robinson's well-known codec; source is available here.
• WaveZIP - A closed source, Windows-only archiver. Uses the MUSICompress[tm] engine which supposedly has a patent. I used to have a link to the company that makes WaveZIP (GadgetLabs) but apparently they have gone out of business (maybe for trying to sell something that should cost nothing).
• WavPack - An open-source, (currently) Windows-based codec, released under the BSD license. WavPack has a very good tradeoff between compressed size and compression speed.

Encoders I couldn't get a copy of:

• AudioPak
• WavARC

If you take maximum compression ratio and speed out of the picture (as you will see later, most coders exhibit similar performance), here is a subjective sort based on overall "usefulness". As far as features go, having source code gives you the most freedom since you can add anything you need that is missing; besides, open source projects tend to get better faster than closed source ones. A close second (depending on the user) would be OS support or plugin support.

The machine I used for encoding the test files is a PII-333 with 256 megs of RAM, running Windows NT 4.0 SP5. Unfortunately, Windows is the lowest-common-denominator platform for all the encoders. Apple Lossless was tested on a newer machine (P4-2.4GHz Windows 2000); only the overall encoding and decoding times are shown, and the times are scaled to the PII-333 by multiplying by the ratio of flac times on the PII to P4.

The input corpus currently consists entirely of CD music tracks. In the future it may include more kinds of input (like speech, other sample rates/resolutions, etc). There are 14 tracks whose genres range from rock to pop to death metal to classical to chant.

The first table is a summary of results on all input tracks. The remaining tables show the results of the encoders on each track. The summary table has more modes, whereas the individual tables have just the interesting ones.

In the summary table, entries are sorted by average compression ratio, which is the average of the ratios for each track; this keeps long tracks from having more influence than short ones. In the individual tables, this is the same as the straight compression ratio, which is compressed size / uncompressed size.

Some interesting things to note:

• flac -5 is right in the middle with respect to compression, relatively fast on the encoding range, and one of the fastest decoding. This is about what you would expect; FLAC is designed to put most of the processing on the encoding side, which is only done once, whereas the adaptive codecs take as long to decode as encode. FLAC is more suited in this way for playback on low-power devices and is one of the reasons it is the only lossless codec with any kind of hardware support.
• LPAC quality settings are not too stable with -r (which allows seeking during playback) turned on.
• RKAU also has a tendency to get bigger in the 'high' mode.
• Another ironic fact is that the encoders that are patented or cost money turn out to be the worst by most measures. SPS is so archane and crippled that I gave up trying to put together results for it after one track.

This is a summary table with just the most 'economic' modes (the ones that give the most compression for the least amount of encode/decode time) for each codec.

Codec Encode time Decode time Compressed size Overall compression ratio Average compression ratio La 0.3c 151:13.16 145:49.78 375.76 MB 0.4814 0.4986 Monkey's Audio 3.99 (high) 15:45.41 16:48.03 389.83 MB 0.4994 0.5153 optimFROG 4.21 (mode 0 @ 4x) 16:34.96 17:57.28 394.69 MB 0.5056 0.5223 RKAU 1.07 (fast) 26:35.34 20:13.22 399.25 MB 0.5115 0.5262 WavPack 3.97a (high) 13:32.02 14:39.12 399.60 MB 0.5119 0.5278 Monkey's Audio 3.99 (fast) 10:32.11 11:49.46 400.57 MB 0.5132 0.5311 LPAC 1.40 (-r, medium) 18:52.79 10:43.32 403.52 MB 0.5170 0.5319 WavPack 3.97a (normal) 6:50.12 8:13.41 409.33 MB 0.5244 0.5424 flac 1.1.1 (-5, default) 12:54.19 7:08.80 413.46 MB 0.5297 0.5459 Apple Lossless 19:53.27 10:01.86 414.45 MB 0.5310 0.5496 Bonk 0.5 36:56.36 27:09.35 418.65 MB 0.5364 0.5543 flac 1.1.1 (-3) 9:51.58 7:00.92 419.29 MB 0.5372 0.5544 Ogg Squish 0.98 ? ? 431.08 MB 0.5522 0.5714 Shorten 3.2a (-p0 -b256, default) 9:44.48 6:31.74 433.56 MB 0.5555 0.5729 Kexis 0.2.2 17:49.06 14:53.90 434.33 MB 0.5564 0.5750 WavPack 3.97a (fast) 5:20.17 5:12.38 441.88 MB 0.5661 0.5857 WaveZIP 8:41.72 ? 452.95 MB 0.5802 0.5986 RIFF WAVE 77:19.89 77:19.89 780.56 MB 1.0000 1.0000

Here are the summary results for all codecs and all modes:

Codec Encode time Decode time Compressed size Overall compression ratio Average compression ratio La 0.3c 151:13.16 145:49.78 375.76 MB 0.4814 0.4986 Monkey's Audio 3.99 (insane) 130:45.33 136:47.14 381.79 MB 0.4891 0.5065 Monkey's Audio 3.99 (extra high) 28:41.96 30:05.38 384.55 MB 0.4927 0.5087 optimFROG 4.21 (mode 4 @ 2x) 183:05.29 184:13.42 386.13 MB 0.4947 0.5105 optimFROG 4.21 (mode 4 @ 1x) 338:34.96 339:23.24 386.22 MB 0.4948 0.5105 optimFROG 4.21 (mode 4 @ 4x) 105:15.85 106:36.23 386.21 MB 0.4948 0.5107 optimFROG 4.21 (mode 3 @ 2x) 92:48.79 93:49.75 386.52 MB 0.4952 0.5110 optimFROG 4.21 (mode 3 @ 1x) 161:51.00 162:10.62 386.55 MB 0.4952 0.5110 optimFROG 4.21 (mode 3 @ 4x) 58:18.40 59:30.51 386.71 MB 0.4954 0.5114 optimFROG 4.21 (mode 2 @ 1x) 68:22.58 69:29.50 387.71 MB 0.4967 0.5128 optimFROG 4.21 (mode 2 @ 2x) 44:17.55 45:31.33 387.72 MB 0.4967 0.5129 optimFROG 4.21 (mode 2 @ 4x) 32:16.85 33:30.92 387.93 MB 0.4970 0.5133 optimFROG 4.21 (mode 1 @ 1x) 43:00.91 44:13.07 388.71 MB 0.4980 0.5146 optimFROG 4.21 (mode 1 @ 2x) 30:35.00 31:50.50 388.81 MB 0.4981 0.5147 optimFROG 4.21 (mode 1 @ 4x) 24:19.58 25:37.44 389.04 MB 0.4984 0.5151 Monkey's Audio 3.99 (high) 15:45.41 16:48.03 389.83 MB 0.4994 0.5153 Monkey's Audio 3.99 (normal) 13:27.96 14:31.90 393.17 MB 0.5037 0.5197 optimFROG 4.21 (mode 0 @ 1x) 20:51.21 22:08.44 394.35 MB 0.5052 0.5218 optimFROG 4.21 (mode 0 @ 2x) 17:59.86 19:20.53 394.48 MB 0.5054 0.5220 optimFROG 4.21 (mode 0 @ 4x) 16:34.96 17:57.28 394.69 MB 0.5056 0.5223 RKAU 1.07 (normal) 53:46.74 23:31.10 395.71 MB 0.5070 0.5229 RKAU 1.07 (high) 136:56.62 27:55.98 395.89 MB 0.5072 0.5235 RKAU 1.07 (fast) 26:35.34 20:13.22 399.25 MB 0.5115 0.5262 WavPack 3.97a (high) 13:32.02 14:39.12 399.60 MB 0.5119 0.5278 Monkey's Audio 3.99 (fast) 10:32.11 11:49.46 400.57 MB 0.5132 0.5311 LPAC 1.40 (-r, medium) 18:52.79 10:43.32 403.52 MB 0.5170 0.5319 LPAC 1.40 (-r, extra high) 30:30.93 12:20.26 404.08 MB 0.5177 0.5322 LPAC 1.40 (-r, high) 24:56.56 11:51.64 404.03 MB 0.5176 0.5323 WavPack 3.97a (normal) 6:50.12 8:13.41 409.33 MB 0.5244 0.5424 flac 1.1.1 (-8) 55:02.38 7:07.59 411.88 MB 0.5277 0.5437 flac 1.1.1 (-5, default) 12:54.19 7:08.80 413.46 MB 0.5297 0.5459 Apple Lossless 19:53.27 10:01.86 414.45 MB 0.5310 0.5496 Bonk 0.5 36:56.36 27:09.35 418.65 MB 0.5364 0.5543 flac 1.1.1 (-3) 9:51.58 7:00.92 419.29 MB 0.5372 0.5544 flac 1.1.1 (-1) 8:37.94 7:15.87 432.32 MB 0.5539 0.5706 Ogg Squish 0.98 ? ? 431.08 MB 0.5522 0.5714 Shorten 3.2a (-p0 -b256, default) 9:44.48 6:31.74 433.56 MB 0.5555 0.5729 Kexis 0.2.2 17:49.06 14:53.90 434.33 MB 0.5564 0.5750 Shorten 3.2a (-p8 -b2048) 12:00.04 7:25.12 438.86 MB 0.5622 0.5810 WavPack 3.97a (fast) 5:20.17 5:12.38 441.88 MB 0.5661 0.5857 WaveZIP 8:41.72 ? 452.95 MB 0.5802 0.5986 RIFF WAVE 77:19.89 77:19.89 780.56 MB 1.0000 1.0000

Here are the results for each individual track.

Track Codec Encode time Decode time Compressed size Compression ratio Dream Theater 6:00 La 0.3c 11:37.69 11:15.37 42.72 MB 0.7306 Monkey's Audio 3.99 (insane) 10:03.39 10:29.37 42.99 MB 0.7352 Monkey's Audio 3.99 (extra high) 2:14.70 2:19.62 43.06 MB 0.7364 Monkey's Audio 3.99 (high) 1:15.91 1:19.00 43.21 MB 0.7391 optimFROG 4.21 (mode 1 @ 4x) 1:53.28 2:00.45 43.26 MB 0.7398 optimFROG 4.21 (mode 4 @ 1x) 25:32.41 25:38.15 43.26 MB 0.7398 Monkey's Audio 3.99 (normal) 1:05.10 1:08.51 43.30 MB 0.7405 optimFROG 4.21 (mode 0 @ 4x) 1:17.95 1:25.67 43.42 MB 0.7426 WavPack 3.97a (high) 1:10.34 1:08.61 43.49 MB 0.7438 RKAU 1.07 (normal) 1:57.68 1:33.38 43.81 MB 0.7493 Monkey's Audio 3.99 (fast) 0:51.65 0:56.13 43.86 MB 0.7501 LPAC 1.40 (-r, normal) 1:27.61 0:56.18 44.12 MB 0.7545 flac 1.1.1 (-8) 4:18.72 0:37.28 44.33 MB 0.7582 WavPack 3.97a (normal) 0:40.24 0:40.70 44.34 MB 0.7583 Bonk 0.5 2:56.03 2:11.58 44.35 MB 0.7585 flac 1.1.1 (-5, default) 1:01.31 0:37.01 44.41 MB 0.7595 Apple Lossless ? ? 44.74 MB 0.7653 Shorten 3.2a (-p8 -b2048) 0:58.81 0:37.63 44.75 MB 0.7654 flac 1.1.1 (-3) 0:49.05 0:36.44 44.78 MB 0.7659 Ogg Squish 0.98 ? ? 45.17 MB 0.7725 Pegasus-SPS 4:45.00 ? 45.40 MB 0.7765 WavPack 3.97a (fast) 0:18.66 0:18.59 46.31 MB 0.7920 Kexis 0.2.2 1:24.83 1:10.93 46.52 MB 0.7956 flac 1.1.1 (-1) 0:44.00 0:36.91 46.65 MB 0.7978 Shorten 3.2a (-p0 -b256, default) 0:47.75 0:32.56 46.68 MB 0.7984 WaveZIP 0:38.99 ? 47.22 MB 0.8077 RIFF WAVE 5:47.56 5:47.56 58.47 MB 1.0000   Eddie Warner Titus La 0.3c 5:24.56 5:13.29 14.76 MB 0.5298 LPAC 1.40 (-r, normal) 0:40.76 0:21.21 14.77 MB 0.5298 flac 1.1.1 (-8) 1:57.87 0:15.05 15.01 MB 0.5385 optimFROG 4.21 (mode 1 @ 4x) 0:53.39 0:55.52 15.01 MB 0.5385 optimFROG 4.21 (mode 4 @ 1x) 12:02.54 12:03.76 15.02 MB 0.5390 flac 1.1.1 (-5, default) 0:28.17 0:15.05 15.12 MB 0.5424 optimFROG 4.21 (mode 0 @ 4x) 0:36.81 0:39.19 15.13 MB 0.5429 RKAU 1.07 (normal) 0:54.82 0:42.71 15.15 MB 0.5435 Monkey's Audio 3.99 (extra high) 1:03.04 1:04.55 15.15 MB 0.5436 Monkey's Audio 3.99 (insane) 4:44.06 4:55.17 15.18 MB 0.5447 Monkey's Audio 3.99 (high) 0:34.33 0:36.23 15.26 MB 0.5474 Monkey's Audio 3.99 (normal) 0:29.62 0:31.38 15.27 MB 0.5479 flac 1.1.1 (-3) 0:22.21 0:14.72 15.43 MB 0.5538 Monkey's Audio 3.99 (fast) 0:23.15 0:25.44 15.55 MB 0.5579 WavPack 3.97a (high) 0:32.15 0:31.18 15.57 MB 0.5585 Shorten 3.2a (-p0 -b256, default) 0:21.16 0:13.55 15.78 MB 0.5662 WavPack 3.97a (normal) 0:18.25 0:17.67 15.86 MB 0.5692 Shorten 3.2a (-p8 -b2048) 0:26.82 0:16.75 16.21 MB 0.5818 Apple Lossless ? ? 16.36 MB 0.5871 flac 1.1.1 (-1) 0:19.75 0:15.76 16.39 MB 0.5880 Bonk 0.5 1:22.01 1:00.12 16.73 MB 0.6003 Ogg Squish 0.98 ? ? 17.03 MB 0.6112 Kexis 0.2.2 0:38.72 0:32.25 17.40 MB 0.6242 WavPack 3.97a (fast) 0:08.19 0:08.79 17.49 MB 0.6275 WaveZIP 0:17.55 ? 17.89 MB 0.6420 RIFF WAVE 2:35.67 2:35.67 27.87 MB 1.0000   Tool Forty-six & 2 La 0.3c 12:34.97 12:09.08 37.42 MB 0.5824 optimFROG 4.21 (mode 4 @ 1x) 27:58.28 28:01.87 37.96 MB 0.5907 Monkey's Audio 3.99 (insane) 10:55.31 11:24.76 38.00 MB 0.5914 Monkey's Audio 3.99 (extra high) 2:24.02 2:33.44 38.03 MB 0.5919 optimFROG 4.21 (mode 1 @ 4x) 2:03.43 2:09.27 38.15 MB 0.5937 Monkey's Audio 3.99 (high) 1:19.07 1:24.02 38.21 MB 0.5947 Monkey's Audio 3.99 (normal) 1:07.84 1:12.00 38.38 MB 0.5973 optimFROG 4.21 (mode 0 @ 4x) 1:24.44 1:30.97 38.68 MB 0.6020 WavPack 3.97a (high) 1:02.47 1:14.54 38.86 MB 0.6048 Monkey's Audio 3.99 (fast) 0:53.72 0:58.89 39.09 MB 0.6084 RKAU 1.07 (normal) 2:16.00 1:41.84 39.42 MB 0.6135 WavPack 3.97a (normal) 0:29.07 0:42.87 39.92 MB 0.6213 LPAC 1.40 (-r, normal) 1:38.01 0:57.56 40.25 MB 0.6263 Apple Lossless ? ? 40.75 MB 0.6342 flac 1.1.1 (-8) 4:35.08 0:39.40 40.89 MB 0.6363 Bonk 0.5 3:07.20 2:21.28 40.98 MB 0.6378 flac 1.1.1 (-5, default) 1:05.54 0:39.65 41.04 MB 0.6388 flac 1.1.1 (-3) 0:50.18 0:38.92 41.74 MB 0.6496 Ogg Squish 0.98 ? ? 42.27 MB 0.6578 flac 1.1.1 (-1) 0:45.83 0:40.89 42.70 MB 0.6646 Kexis 0.2.2 1:30.09 1:16.29 42.75 MB 0.6652 Shorten 3.2a (-p8 -b2048) 1:02.42 0:37.84 43.06 MB 0.6701 Shorten 3.2a (-p0 -b256, default) 0:51.29 0:34.59 43.18 MB 0.6721 WavPack 3.97a (fast) 0:31.26 0:28.79 43.65 MB 0.6794 WaveZIP 0:42.84 ? 44.52 MB 0.6930 RIFF WAVE 6:21.92 6:21.92 64.25 MB 1.0000   Cannibal Corpse Mummified In Barbed Wire La 0.3c 6:35.94 6:23.57 22.69 MB 0.6798 Monkey's Audio 3.99 (insane) 5:42.63 5:59.53 22.83 MB 0.6839 Monkey's Audio 3.99 (extra high) 1:15.58 1:19.31 22.85 MB 0.6847 optimFROG 4.21 (mode 4 @ 1x) 14:34.28 14:37.69 22.95 MB 0.6877 Monkey's Audio 3.99 (high) 0:41.91 0:45.49 23.18 MB 0.6945 Monkey's Audio 3.99 (normal) 0:36.03 0:38.34 23.24 MB 0.6963 optimFROG 4.21 (mode 1 @ 4x) 1:03.96 1:08.85 23.31 MB 0.6984 RKAU 1.07 (normal) 1:09.71 0:56.66 23.34 MB 0.6993 LPAC 1.40 (-r, normal) 1:05.38 0:36.20 23.53 MB 0.7050 WavPack 3.97a (high) 0:32.99 0:40.05 23.57 MB 0.7062 optimFROG 4.21 (mode 0 @ 4x) 0:44.14 0:48.71 23.95 MB 0.7176 Monkey's Audio 3.99 (fast) 0:28.61 0:31.53 24.14 MB 0.7234 flac 1.1.1 (-8) 2:25.59 0:20.85 24.18 MB 0.7245 flac 1.1.1 (-5, default) 0:34.66 0:21.42 24.30 MB 0.7282 Bonk 0.5 1:40.38 1:14.58 24.36 MB 0.7297 Apple Lossless ? ? 24.37 MB 0.7301 WavPack 3.97a (normal) 0:15.99 0:23.50 24.76 MB 0.7418 Shorten 3.2a (-p8 -b2048) 0:33.74 0:22.47 25.12 MB 0.7526 flac 1.1.1 (-3) 0:27.40 0:20.11 25.16 MB 0.7539 Ogg Squish 0.98 ? ? 25.23 MB 0.7558 Kexis 0.2.2 0:47.13 0:40.67 26.03 MB 0.7799 flac 1.1.1 (-1) 0:24.04 0:21.68 26.10 MB 0.7819 WavPack 3.97a (fast) 0:16.79 0:21.64 26.17 MB 0.7841 Shorten 3.2a (-p0 -b256, default) 0:28.20 0:20.46 26.61 MB 0.7972 WaveZIP 0:22.25 ? 26.89 MB 0.8058 RIFF WAVE 3:18.36 3:18.36 33.37 MB 1.0000   Alanis Morisette Hand In My Pocket La 0.3c 7:35.21 7:20.19 20.77 MB 0.5312 Monkey's Audio 3.99 (insane) 6:36.65 6:53.31 21.22 MB 0.5427 optimFROG 4.21 (mode 4 @ 1x) 16:51.82 16:54.34 21.24 MB 0.5433 optimFROG 4.21 (mode 1 @ 4x) 1:14.29 1:18.06 21.36 MB 0.5464 Monkey's Audio 3.99 (extra high) 1:26.93 1:31.74 21.40 MB 0.5475 Monkey's Audio 3.99 (high) 0:47.19 0:50.45 21.66 MB 0.5540 Monkey's Audio 3.99 (normal) 0:41.57 0:45.66 21.76 MB 0.5565 optimFROG 4.21 (mode 0 @ 4x) 0:51.39 0:54.97 21.89 MB 0.5598 Monkey's Audio 3.99 (fast) 0:31.89 0:35.92 22.13 MB 0.5660 WavPack 3.97a (high) 0:45.07 0:43.88 22.28 MB 0.5699 WavPack 3.97a (normal) 0:25.40 0:24.80 22.80 MB 0.5832 RKAU 1.07 (normal) 1:21.18 1:01.60 22.80 MB 0.5833 LPAC 1.40 (-r, normal) 1:01.11 0:33.79 23.25 MB 0.5948 Bonk 0.5 1:53.41 1:23.52 23.35 MB 0.5972 flac 1.1.1 (-8) 2:46.09 0:23.14 23.45 MB 0.5998 flac 1.1.1 (-5, default) 0:39.82 0:21.81 23.56 MB 0.6026 Apple Lossless ? ? 23.64 MB 0.6047 Ogg Squish 0.98 ? ? 24.11 MB 0.6167 flac 1.1.1 (-3) 0:30.58 0:22.05 24.32 MB 0.6221 Shorten 3.2a (-p8 -b2048) 0:37.49 0:22.93 24.72 MB 0.6323 Kexis 0.2.2 0:54.26 0:45.64 24.80 MB 0.6345 flac 1.1.1 (-1) 0:26.46 0:22.14 24.82 MB 0.6348 WavPack 3.97a (fast) 0:16.67 0:17.02 24.94 MB 0.6381 Shorten 3.2a (-p0 -b256, default) 0:29.71 0:18.92 25.34 MB 0.6481 WaveZIP 0:28.05 ? 25.95 MB 0.6638 RIFF WAVE 3:52.36 3:52.36 39.09 MB 1.0000   Gloria Estefan Conga La 0.3c 8:52.93 8:34.81 28.98 MB 0.6419 optimFROG 4.21 (mode 4 @ 1x) 19:40.53 19:44.47 29.43 MB 0.6517 Monkey's Audio 3.99 (insane) 7:41.95 8:01.95 29.48 MB 0.6528 Monkey's Audio 3.99 (extra high) 1:42.17 1:46.62 29.49 MB 0.6530 optimFROG 4.21 (mode 1 @ 4x) 1:26.64 1:32.23 29.58 MB 0.6550 Monkey's Audio 3.99 (high) 0:57.62 1:00.74 29.69 MB 0.6576 optimFROG 4.21 (mode 0 @ 4x) 0:59.59 1:05.29 29.78 MB 0.6595 Monkey's Audio 3.99 (normal) 0:48.44 0:53.29 29.83 MB 0.6605 WavPack 3.97a (high) 0:53.50 0:51.90 29.92 MB 0.6625 Monkey's Audio 3.99 (fast) 0:38.48 0:43.91 30.20 MB 0.6689 WavPack 3.97a (normal) 0:29.84 0:29.92 30.28 MB 0.6706 RKAU 1.07 (normal) 1:37.85 1:12.15 30.34 MB 0.6719 Bonk 0.5 2:13.34 1:39.44 30.64 MB 0.6785 flac 1.1.1 (-8) 3:16.07 0:27.53 30.76 MB 0.6811 LPAC 1.40 (-r, normal) 1:14.08 0:44.64 30.81 MB 0.6823 flac 1.1.1 (-5, default) 0:46.30 0:26.74 30.86 MB 0.6834 Apple Lossless ? ? 30.91 MB 0.6847 Ogg Squish 0.98 ? ? 31.06 MB 0.6879 WavPack 3.97a (fast) 0:13.31 0:14.15 31.61 MB 0.7000 flac 1.1.1 (-3) 0:35.88 0:27.65 31.63 MB 0.7006 Shorten 3.2a (-p8 -b2048) 0:44.76 0:27.48 31.76 MB 0.7034 Kexis 0.2.2 1:03.91 0:53.54 31.86 MB 0.7056 flac 1.1.1 (-1) 0:32.51 0:27.30 31.99 MB 0.7085 Shorten 3.2a (-p0 -b256, default) 0:35.74 0:23.64 32.47 MB 0.7191 WaveZIP 0:29.42 ? 33.02 MB 0.7313 RIFF WAVE 4:28.39 4:28.39 45.15 MB 1.0000   Cream White Room La 0.3c 10:24.08 10:03.16 33.44 MB 0.6309 optimFROG 4.21 (mode 4 @ 1x) 22:59.05 23:02.98 33.93 MB 0.6399 Monkey's Audio 3.99 (insane) 9:02.77 9:26.75 33.95 MB 0.6404 optimFROG 4.21 (mode 1 @ 4x) 1:42.28 1:47.55 33.96 MB 0.6405 Monkey's Audio 3.99 (extra high) 1:59.73 2:04.46 34.00 MB 0.6413 Monkey's Audio 3.99 (high) 1:05.80 1:09.38 34.11 MB 0.6435 Monkey's Audio 3.99 (normal) 0:56.67 0:59.56 34.25 MB 0.6460 optimFROG 4.21 (mode 0 @ 4x) 1:10.30 1:15.99 34.29 MB 0.6468 WavPack 3.97a (high) 0:51.50 1:02.71 34.55 MB 0.6516 RKAU 1.07 (normal) 1:50.80 1:24.98 34.60 MB 0.6527 LPAC 1.40 (-r, normal) 1:25.16 0:48.67 34.84 MB 0.6572 Monkey's Audio 3.99 (fast) 0:44.60 0:48.92 34.85 MB 0.6574 Bonk 0.5 2:35.36 1:56.20 34.96 MB 0.6595 flac 1.1.1 (-8) 3:48.73 0:31.91 34.99 MB 0.6601 WavPack 3.97a (normal) 0:24.43 0:36.09 35.08 MB 0.6617 flac 1.1.1 (-5, default) 0:54.89 0:33.82 35.16 MB 0.6633 flac 1.1.1 (-3) 0:41.38 0:32.00 35.36 MB 0.6671 Shorten 3.2a (-p8 -b2048) 0:51.44 0:33.02 35.40 MB 0.6677 Apple Lossless ? ? 35.46 MB 0.6689 Ogg Squish 0.98 ? ? 35.74 MB 0.6742 WavPack 3.97a (fast) 0:26.00 0:24.83 36.32 MB 0.6852 Shorten 3.2a (-p0 -b256, default) 0:41.14 0:28.91 36.42 MB 0.6870 flac 1.1.1 (-1) 0:36.87 0:33.39 36.56 MB 0.6897 Kexis 0.2.2 1:13.87 1:02.90 36.64 MB 0.6911 WaveZIP 0:35.77 ? 37.13 MB 0.7004 RIFF WAVE 5:15.11 5:15.11 53.01 MB 1.0000   Maurice Ravel Fanfare from "L'eventail de Jeanne" La 0.3c 3:55.40 3:47.60 6.46 MB 0.3104 Monkey's Audio 3.99 (extra high) 0:42.68 0:43.98 6.75 MB 0.3243 Monkey's Audio 3.99 (insane) 3:10.93 3:18.53 6.78 MB 0.3256 optimFROG 4.21 (mode 4 @ 1x) 8:22.42 8:23.32 6.82 MB 0.3274 Monkey's Audio 3.99 (high) 0:23.09 0:24.12 6.98 MB 0.3353 optimFROG 4.21 (mode 1 @ 4x) 0:36.57 0:38.26 7.09 MB 0.3406 RKAU 1.07 (normal) 0:40.67 0:28.52 7.18 MB 0.3451 optimFROG 4.21 (mode 0 @ 4x) 0:24.98 0:26.37 7.21 MB 0.3462 Monkey's Audio 3.99 (normal) 0:19.78 0:20.50 7.28 MB 0.3495 LPAC 1.40 (-r, normal) 0:29.01 0:15.11 7.33 MB 0.3520 WavPack 3.97a (high) 0:22.63 0:21.86 7.45 MB 0.3577 Monkey's Audio 3.99 (fast) 0:15.60 0:16.76 7.50 MB 0.3601 flac 1.1.1 (-8) 1:20.73 0:09.51 7.69 MB 0.3692 flac 1.1.1 (-5, default) 0:18.95 0:09.45 7.71 MB 0.3703 flac 1.1.1 (-3) 0:14.98 0:09.19 7.77 MB 0.3734 Apple Lossless ? ? 7.82 MB 0.3757 WavPack 3.97a (normal) 0:12.56 0:11.95 7.83 MB 0.3760 Bonk 0.5 0:55.92 0:40.23 7.83 MB 0.3762 flac 1.1.1 (-1) 0:12.97 0:10.39 8.12 MB 0.3902 Ogg Squish 0.98 ? ? 8.15 MB 0.3914 Shorten 3.2a (-p0 -b256, default) 0:13.81 0:08.88 8.19 MB 0.3932 Shorten 3.2a (-p8 -b2048) 0:17.45 0:10.30 8.29 MB 0.3983 Kexis 0.2.2 0:26.78 0:21.90 8.52 MB 0.4091 WaveZIP 0:13.11 ? 8.72 MB 0.4193 WavPack 3.97a (fast) 0:05.35 0:06.33 8.87 MB 0.4259 RIFF WAVE 2:03.76 2:03.76 20.82 MB 1.0000   Maurice Ravel String Quartet (4th movement) La 0.3c 10:45.80 10:21.44 19.94 MB 0.3550 Monkey's Audio 3.99 (insane) 9:17.64 9:43.03 20.17 MB 0.3590 Monkey's Audio 3.99 (extra high) 2:01.23 2:06.97 20.29 MB 0.3611 optimFROG 4.21 (mode 4 @ 1x) 24:26.99 24:29.36 20.62 MB 0.3671 Monkey's Audio 3.99 (high) 1:06.28 1:09.59 20.68 MB 0.3681 optimFROG 4.21 (mode 1 @ 4x) 1:42.57 1:47.48 20.93 MB 0.3725 Monkey's Audio 3.99 (normal) 0:56.22 1:01.22 21.05 MB 0.3747 optimFROG 4.21 (mode 0 @ 4x) 1:09.17 1:13.14 21.23 MB 0.3779 RKAU 1.07 (normal) 1:52.65 1:25.39 21.30 MB 0.3791 Monkey's Audio 3.99 (fast) 0:43.69 0:49.31 21.52 MB 0.3830 WavPack 3.97a (high) 0:52.48 1:02.26 21.55 MB 0.3835 LPAC 1.40 (-r, normal) 1:20.84 0:42.73 21.96 MB 0.3909 WavPack 3.97a (normal) 0:23.29 0:34.28 22.11 MB 0.3935 Apple Lossless ? ? 22.52 MB 0.4008 flac 1.1.1 (-8) 3:53.93 0:28.02 22.61 MB 0.4025 flac 1.1.1 (-5, default) 0:54.34 0:27.92 22.68 MB 0.4036 Bonk 0.5 2:33.53 1:51.94 23.18 MB 0.4125 flac 1.1.1 (-3) 0:40.00 0:28.15 23.21 MB 0.4132 flac 1.1.1 (-1) 0:34.99 0:27.73 23.36 MB 0.4158 Kexis 0.2.2 1:15.05 1:03.86 23.42 MB 0.4168 Shorten 3.2a (-p0 -b256, default) 0:39.96 0:27.36 23.71 MB 0.4221 Ogg Squish 0.98 ? ? 24.12 MB 0.4293 WavPack 3.97a (fast) 0:24.34 0:22.17 25.08 MB 0.4463 Shorten 3.2a (-p8 -b2048) 0:49.06 0:29.94 25.59 MB 0.4554 WaveZIP 0:36.60 ? 25.84 MB 0.4600 RIFF WAVE 5:33.95 5:33.95 56.18 MB 1.0000   Sergei Prokofiev Piano Concerto No.3 (3rd movement) La 0.3c 19:11.61 18:28.80 32.65 MB 0.3243 Monkey's Audio 3.99 (insane) 16:21.16 17:04.46 33.34 MB 0.3311 optimFROG 4.21 (mode 4 @ 1x) 43:21.88 43:26.18 33.58 MB 0.3335 Monkey's Audio 3.99 (extra high) 3:34.86 3:46.82 33.60 MB 0.3337 optimFROG 4.21 (mode 1 @ 4x) 3:00.57 3:08.19 33.83 MB 0.3360 optimFROG 4.21 (mode 0 @ 4x) 2:00.85 2:09.52 34.14 MB 0.3390 Monkey's Audio 3.99 (high) 1:56.68 2:07.25 34.16 MB 0.3392 Monkey's Audio 3.99 (normal) 1:38.96 1:48.17 34.58 MB 0.3434 RKAU 1.07 (normal) 3:08.70 2:26.17 35.21 MB 0.3496 LPAC 1.40 (-r, normal) 2:06.21 1:11.92 35.27 MB 0.3502 WavPack 3.97a (high) 1:32.78 1:50.74 35.35 MB 0.3510 Monkey's Audio 3.99 (fast) 1:17.00 1:27.35 35.53 MB 0.3528 WavPack 3.97a (normal) 0:40.68 1:00.29 36.99 MB 0.3673 Apple Lossless ? ? 37.32 MB 0.3706 flac 1.1.1 (-8) 6:51.48 0:49.47 38.07 MB 0.3781 flac 1.1.1 (-5, default) 1:35.22 0:47.57 38.17 MB 0.3791 flac 1.1.1 (-3) 1:10.67 0:46.40 38.51 MB 0.3824 flac 1.1.1 (-1) 1:01.44 0:53.40 39.30 MB 0.3903 Shorten 3.2a (-p0 -b256, default) 1:10.57 0:50.00 39.49 MB 0.3921 Kexis 0.2.2 2:12.39 1:49.00 39.89 MB 0.3962 Bonk 0.5 4:33.71 3:19.38 40.31 MB 0.4003 Ogg Squish 0.98 ? ? 41.86 MB 0.4157 WavPack 3.97a (fast) 0:43.24 0:40.17 43.03 MB 0.4273 WaveZIP 1:05.60 ? 43.67 MB 0.4337 Shorten 3.2a (-p8 -b2048) 1:26.84 0:53.19 45.34 MB 0.4502 RIFF WAVE 9:58.47 9:58.47 100.68 MB 1.0000   Frederic Chopin Prelude No.24 in d minor La 0.3c 5:14.83 5:03.08 9.84 MB 0.3582 Monkey's Audio 3.99 (insane) 4:33.42 4:45.16 9.96 MB 0.3625 Monkey's Audio 3.99 (extra high) 0:59.94 1:01.87 10.16 MB 0.3699 optimFROG 4.21 (mode 4 @ 1x) 11:56.24 11:58.77 10.34 MB 0.3764 Monkey's Audio 3.99 (high) 0:32.29 0:34.49 10.40 MB 0.3788 optimFROG 4.21 (mode 1 @ 4x) 0:50.07 0:53.49 10.41 MB 0.3790 Monkey's Audio 3.99 (normal) 0:27.35 0:29.51 10.52 MB 0.3832 optimFROG 4.21 (mode 0 @ 4x) 0:34.06 0:38.70 10.53 MB 0.3833 LPAC 1.40 (-r, normal) 0:34.91 0:20.01 10.74 MB 0.3911 WavPack 3.97a (high) 0:31.43 0:28.95 10.76 MB 0.3919 RKAU 1.07 (normal) 0:54.46 0:41.54 10.88 MB 0.3963 Monkey's Audio 3.99 (fast) 0:21.10 0:23.90 10.94 MB 0.3982 WavPack 3.97a (normal) 0:16.90 0:15.17 11.34 MB 0.4128 Apple Lossless ? ? 11.51 MB 0.4191 flac 1.1.1 (-8) 1:53.31 0:13.06 11.69 MB 0.4256 flac 1.1.1 (-5, default) 0:26.05 0:13.50 11.71 MB 0.4265 flac 1.1.1 (-3) 0:19.82 0:13.25 11.74 MB 0.4274 flac 1.1.1 (-1) 0:17.61 0:13.80 11.86 MB 0.4319 Shorten 3.2a (-p0 -b256, default) 0:19.20 0:11.89 12.05 MB 0.4386 Kexis 0.2.2 0:36.70 0:30.26 12.14 MB 0.4419 Bonk 0.5 1:15.45 0:55.07 12.86 MB 0.4684 WaveZIP 0:18.75 ? 13.08 MB 0.4765 Ogg Squish 0.98 ? ? 13.31 MB 0.4845 WavPack 3.97a (fast) 0:06.74 0:08.51 13.67 MB 0.4978 Shorten 3.2a (-p8 -b2048) 0:24.43 0:14.32 14.40 MB 0.5242 RIFF WAVE 2:43.23 2:43.23 27.46 MB 1.0000   Domenico Scarlatti Sonata K.42 (arr.Yepes for guitar) La 0.3c 3:09.33 3:01.82 6.62 MB 0.4036 Monkey's Audio 3.99 (insane) 2:46.09 2:52.52 6.67 MB 0.4068 Monkey's Audio 3.99 (extra high) 0:36.21 0:38.16 6.74 MB 0.4109 optimFROG 4.21 (mode 4 @ 1x) 7:08.77 7:09.52 6.87 MB 0.4190 Monkey's Audio 3.99 (high) 0:19.60 0:20.23 6.91 MB 0.4213 optimFROG 4.21 (mode 1 @ 4x) 0:30.47 0:31.95 6.98 MB 0.4255 Monkey's Audio 3.99 (normal) 0:16.73 0:17.60 6.99 MB 0.4261 RKAU 1.07 (normal) 0:37.09 0:26.56 7.05 MB 0.4297 optimFROG 4.21 (mode 0 @ 4x) 0:20.68 0:22.06 7.07 MB 0.4310 WavPack 3.97a (high) 0:15.50 0:18.31 7.12 MB 0.4340 Monkey's Audio 3.99 (fast) 0:12.96 0:14.28 7.16 MB 0.4369 LPAC 1.40 (-r, normal) 0:29.99 0:14.33 7.21 MB 0.4397 WavPack 3.97a (normal) 0:07.01 0:10.27 7.31 MB 0.4460 flac 1.1.1 (-8) 1:08.58 0:07.99 7.37 MB 0.4498 flac 1.1.1 (-5, default) 0:15.90 0:08.71 7.40 MB 0.4513 flac 1.1.1 (-3) 0:11.84 0:08.26 7.43 MB 0.4530 Apple Lossless ? ? 7.44 MB 0.4541 Bonk 0.5 0:45.59 0:32.63 7.46 MB 0.4548 Shorten 3.2a (-p0 -b256, default) 0:11.67 0:07.17 7.48 MB 0.4564 Kexis 0.2.2 0:22.06 0:18.62 7.50 MB 0.4572 flac 1.1.1 (-1) 0:10.17 0:07.85 7.53 MB 0.4591 WavPack 3.97a (fast) 0:04.11 0:06.57 7.58 MB 0.4624 Ogg Squish 0.98 ? ? 7.74 MB 0.4723 WaveZIP 0:10.56 ? 7.83 MB 0.4781 Shorten 3.2a (-p8 -b2048) 0:14.29 0:09.07 8.20 MB 0.5004 RIFF WAVE 1:37.43 1:37.43 16.39 MB 1.0000   The Benedictine Monks of Santo Domingo de Silos Laetatus sum La 0.3c 4:40.71 4:32.29 11.94 MB 0.4922 Monkey's Audio 3.99 (insane) 4:08.23 4:18.43 12.05 MB 0.4968 Monkey's Audio 3.99 (extra high) 0:54.17 0:56.87 12.09 MB 0.4981 optimFROG 4.21 (mode 4 @ 1x) 10:34.75 10:36.83 12.17 MB 0.5015 Monkey's Audio 3.99 (high) 0:29.82 0:31.71 12.23 MB 0.5042 RKAU 1.07 (normal) 0:57.64 0:41.39 12.25 MB 0.5049 Monkey's Audio 3.99 (normal) 0:25.63 0:27.41 12.42 MB 0.5118 optimFROG 4.21 (mode 1 @ 4x) 0:45.20 0:48.45 12.43 MB 0.5121 LPAC 1.40 (-r, normal) 0:45.66 0:23.29 12.62 MB 0.5200 optimFROG 4.21 (mode 0 @ 4x) 0:31.03 0:33.69 12.63 MB 0.5207 WavPack 3.97a (high) 0:28.01 0:27.43 12.65 MB 0.5213 Bonk 0.5 1:08.18 0:49.70 12.71 MB 0.5237 Monkey's Audio 3.99 (fast) 0:19.79 0:21.78 12.76 MB 0.5260 flac 1.1.1 (-8) 1:43.74 0:13.23 12.82 MB 0.5286 flac 1.1.1 (-5, default) 0:24.12 0:13.08 12.92 MB 0.5325 WavPack 3.97a (normal) 0:15.61 0:15.35 12.98 MB 0.5348 flac 1.1.1 (-3) 0:18.80 0:13.85 12.98 MB 0.5349 Apple Lossless ? ? 13.04 MB 0.5377 WavPack 3.97a (fast) 0:11.07 0:10.38 13.30 MB 0.5481 Kexis 0.2.2 0:33.43 0:28.11 13.30 MB 0.5481 Shorten 3.2a (-p0 -b256, default) 0:17.80 0:11.46 13.32 MB 0.5489 flac 1.1.1 (-1) 0:15.60 0:12.82 13.34 MB 0.5500 Ogg Squish 0.98 ? ? 13.41 MB 0.5528 Shorten 3.2a (-p8 -b2048) 0:22.30 0:13.87 13.42 MB 0.5531 WaveZIP 0:16.37 ? 13.72 MB 0.5655 RIFF WAVE 2:24.21 2:24.21 24.26 MB 1.0000   L. Subramaniam Raga Sivapriya La 0.3c 41:10.10 39:35.28 87.51 MB 0.4097 Monkey's Audio 3.99 (insane) 35:41.10 37:34.17 89.18 MB 0.4175 Monkey's Audio 3.99 (extra high) 7:46.70 8:10.97 90.95 MB 0.4258 optimFROG 4.21 (mode 4 @ 1x) 93:05.00 93:16.00 92.05 MB 0.4310 optimFROG 4.21 (mode 1 @ 4x) 6:36.86 6:57.69 92.76 MB 0.4343 Monkey's Audio 3.99 (high) 4:15.82 4:35.33 93.15 MB 0.4361 Monkey's Audio 3.99 (normal) 3:38.02 3:58.75 94.32 MB 0.4416 optimFROG 4.21 (mode 0 @ 4x) 4:29.57 4:53.01 94.74 MB 0.4436 RKAU 1.07 (normal) 7:16.09 5:30.33 95.91 MB 0.4490 WavPack 3.97a (high) 3:41.17 3:56.70 96.51 MB 0.4518 LPAC 1.40 (-r, normal) 4:34.06 2:37.68 96.84 MB 0.4534 Monkey's Audio 3.99 (fast) 2:49.87 3:15.34 95.34 MB 0.4464 WavPack 3.97a (normal) 1:50.85 2:10.55 97.75 MB 0.4577 flac 1.1.1 (-8) 15:02.46 1:51.15 98.02 MB 0.4589 flac 1.1.1 (-5, default) 3:28.92 1:53.07 98.42 MB 0.4608 Apple Lossless ? ? 98.57 MB 0.4615 Bonk 0.5 9:56.25 7:13.68 98.94 MB 0.4633 flac 1.1.1 (-3) 2:38.79 1:49.93 99.22 MB 0.4645 Ogg Squish 0.98 ? ? 101.88 MB 0.4770 Shorten 3.2a (-p8 -b2048) 3:10.19 1:56.31 102.60 MB 0.4804 Shorten 3.2a (-p0 -b256, default) 2:36.48 1:42.35 102.84 MB 0.4815 Kexis 0.2.2 4:49.84 3:59.93 103.57 MB 0.4849 flac 1.1.1 (-1) 2:15.70 1:51.81 103.60 MB 0.4851 WavPack 3.97a (fast) 1:34.44 1:24.44 103.86 MB 0.4863 WaveZIP 2:25.86 ? 107.47 MB 0.5032 RIFF WAVE 21:09.47 21:09.47 213.56 MB 1.0000