The purpose of the comparison page is not only to show how compression ratios and encoding 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 three of the lossless encoders out there (Bonk, flac and Kexis) are truly free (source code for Shorten is available but the license is 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 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.

Reviewed encoders:

• flac of course.
• Bonk - An open-source source codec. No player or library support yet.
• Kexis - An open-source source codec. Still in the alpha stage. No player or library support yet.
• 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• Ogg Squish - An open source source codec that is no longer maintained.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 best compression ratios.
• Pegasus-SPS - A closed source, Windows-only codec.
• RKAU - A closed source, Windows-only codec.
• 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 - A closed source, Windows-only archiver.

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.

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 weighted 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.
• Uniformity between unweighted and weighted ratio means the codec performs the same across genres.
• 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 Compression ratio Weighted ratio Monkey's Audio 3.96 (extra high) 26:52.07 28:44.55 386.96 MB 0.4958 0.5119 optimFROG 4.21 (mode 1 @ 4x) 24:19.58 25:37.44 389.04 MB 0.4984 0.5151 Monkey's Audio 3.96 (high) 13:59.07 15:30.69 391.76 MB 0.5019 0.5179 optimFROG 4.21 (mode 0 @ 4x) 16:34.96 17:57.28 394.69 MB 0.5056 0.5223 Monkey's Audio 3.96 (normal) 11:42.34 13:11.29 395.04 MB 0.5061 0.5223 RKAU 1.07 (normal) 53:46.74 23:31.10 395.71 MB 0.5070 0.5229 RKAU 1.07 (fast) 26:35.34 20:13.22 399.25 MB 0.5115 0.5262 LPAC 1.40 (-r, medium) 18:52.79 10:43.32 403.52 MB 0.5170 0.5319 Monkey's Audio 3.96 (fast) 9:05.59 10:51.09 401.63 MB 0.5145 0.5327 flac 1.0.3 (-5, default) 13:26.74 7:19.04 413.43 MB 0.5297 0.5458 flac 1.0.3 (-3) 10:07.34 7:14.68 419.26 MB 0.5371 0.5543 Bonk 0.5 36:56.36 27:09.35 418.65 MB 0.5364 0.5543 WavPack 3.91 (high) 7:15.37 ? 418.09 MB 0.5356 0.5556 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 WaveZIP 8:41.72 ? 452.95 MB 0.5802 0.5986 RIFF WAVE     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 Compression ratio Weighted ratio 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 Monkey's Audio 3.96 (extra high) 26:52.07 28:44.55 386.96 MB 0.4958 0.5119 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 3.96 (high) 13:59.07 15:30.69 391.76 MB 0.5019 0.5179 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 Monkey's Audio 3.96 (normal) 11:42.34 13:11.29 395.04 MB 0.5061 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 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 Monkey's Audio 3.96 (fast) 9:05.59 10:51.09 401.63 MB 0.5145 0.5327 flac 1.0.3 (-8) 55:49.51 7:25.36 411.85 MB 0.5276 0.5436 flac 1.0.3 (-5, default) 13:26.74 7:19.04 413.43 MB 0.5297 0.5458 flac 1.0.3 (-3) 10:07.34 7:14.68 419.26 MB 0.5371 0.5543 Bonk 0.5 36:56.36 27:09.35 418.65 MB 0.5364 0.5543 WavPack 3.91 (high) 7:15.37 ? 418.09 MB 0.5356 0.5556 flac 1.0.3 (-1) 8:55.94 7:22.51 432.29 MB 0.5538 0.5704 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 WaveZIP 8:41.72 ? 452.95 MB 0.5802 0.5986 RIFF WAVE     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 58.47 MB Monkey's Audio 3.96 (extra high) 2:05.36 2:13.44 43.24 MB 0.7395 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 3.96 (high) 1:07.92 1:13.20 43.39 MB 0.7421 optimFROG 4.21 (mode 0 @ 4x) 1:17.95 1:25.67 43.42 MB 0.7426 Monkey's Audio 3.96 (normal) 0:57.04 1:03.37 43.48 MB 0.7436 RKAU 1.07 (normal) 1:57.68 1:33.38 43.81 MB 0.7493 Monkey's Audio 3.96 (fast) 0:44.33 0:51.22 43.97 MB 0.7520 LPAC 1.40 (-r, normal) 1:27.61 0:56.18 44.12 MB 0.7545 flac 1.0.3 (-8) 4:20.41 0:37.86 44.33 MB 0.7581 Bonk 0.5 2:56.03 2:11.58 44.35 MB 0.7585 flac 1.0.3 (-5, default) 1:03.87 0:37.55 44.40 MB 0.7594 Shorten 3.2a (-p8 -b2048) 0:58.81 0:37.63 44.75 MB 0.7654 flac 1.0.3 (-3) 0:48.52 0:37.22 44.78 MB 0.7658 WavPack 3.91 (high) 0:35.86 ? 45.14 MB 0.7720 Ogg Squish 0.98 ? ? 45.17 MB 0.7725 Pegasus-SPS 4:45.00 ? 45.40 MB 0.7765 Kexis 0.2.2 1:24.83 1:10.93 46.52 MB 0.7956 flac 1.0.3 (-1) 0:44.07 0:37.77 46.64 MB 0.7977 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   Eddie Warner Titus 27.87 MB LPAC 1.40 (-r, normal) 0:40.76 0:21.21 14.77 MB 0.5298 flac 1.0.3 (-8) 1:58.90 0:17.33 15.01 MB 0.5384 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 1.0.3 (-5, default) 0:29.56 0:15.57 15.11 MB 0.5423 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 3.96 (extra high) 0:58.52 1:01.81 15.25 MB 0.5471 Monkey's Audio 3.96 (high) 0:30.88 0:33.55 15.34 MB 0.5505 Monkey's Audio 3.96 (normal) 0:25.45 0:28.37 15.35 MB 0.5509 flac 1.0.3 (-3) 0:22.29 0:15.29 15.43 MB 0.5537 Monkey's Audio 3.96 (fast) 0:19.85 0:22.90 15.58 MB 0.5592 Shorten 3.2a (-p0 -b256, default) 0:21.16 0:13.55 15.78 MB 0.5662 Shorten 3.2a (-p8 -b2048) 0:26.82 0:16.75 16.21 MB 0.5818 flac 1.0.3 (-1) 0:19.92 0:15.67 16.38 MB 0.5879 Bonk 0.5 1:22.01 1:00.12 16.73 MB 0.6003 Ogg Squish 0.98 ? ? 17.03 MB 0.6112 WavPack 3.91 (high) 0:10.55 ? 17.13 MB 0.6148 Kexis 0.2.2 0:38.72 0:32.25 17.40 MB 0.6242 WaveZIP 0:17.55 ? 17.89 MB 0.6420   Tool Forty-six & 2 64.25 MB optimFROG 4.21 (mode 4 @ 1x) 27:58.28 28:01.87 37.96 MB 0.5907 optimFROG 4.21 (mode 1 @ 4x) 2:03.43 2:09.27 38.15 MB 0.5937 Monkey's Audio 3.96 (extra high) 2:14.70 2:24.30 38.23 MB 0.5950 Monkey's Audio 3.96 (high) 1:09.82 1:18.09 38.42 MB 0.5979 Monkey's Audio 3.96 (normal) 0:58.69 1:07.02 38.59 MB 0.6005 optimFROG 4.21 (mode 0 @ 4x) 1:24.44 1:30.97 38.68 MB 0.6020 Monkey's Audio 3.96 (fast) 0:46.50 0:55.41 39.18 MB 0.6098 RKAU 1.07 (normal) 2:16.00 1:41.84 39.42 MB 0.6135 LPAC 1.40 (-r, normal) 1:38.01 0:57.56 40.25 MB 0.6263 flac 1.0.3 (-8) 4:39.65 0:38.25 40.88 MB 0.6363 Bonk 0.5 3:07.20 2:21.28 40.98 MB 0.6378 flac 1.0.3 (-5, default) 1:08.27 0:38.81 41.04 MB 0.6387 WavPack 3.91 (high) 0:37.51 ? 41.51 MB 0.6461 flac 1.0.3 (-3) 0:51.78 0:38.54 41.74 MB 0.6496 Ogg Squish 0.98 ? ? 42.27 MB 0.6578 flac 1.0.3 (-1) 0:46.19 0:41.18 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 WaveZIP 0:42.84 ? 44.52 MB 0.6930   Cannibal Corpse Mummified In Barbed Wire 33.37 MB Monkey's Audio 3.96 (extra high) 1:10.94 1:15.92 22.95 MB 0.6876 optimFROG 4.21 (mode 4 @ 1x) 14:34.28 14:37.69 22.95 MB 0.6877 Monkey's Audio 3.96 (high) 0:37.63 0:41.34 23.19 MB 0.6948 Monkey's Audio 3.96 (normal) 0:31.71 0:34.87 23.26 MB 0.6968 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 optimFROG 4.21 (mode 0 @ 4x) 0:44.14 0:48.71 23.95 MB 0.7176 flac 1.0.3 (-8) 2:27.82 0:22.15 24.18 MB 0.7244 Monkey's Audio 3.96 (fast) 0:25.05 0:28.99 24.20 MB 0.7250 flac 1.0.3 (-5, default) 0:36.19 0:21.00 24.30 MB 0.7281 Bonk 0.5 1:40.38 1:14.58 24.36 MB 0.7297 Shorten 3.2a (-p8 -b2048) 0:33.74 0:22.47 25.12 MB 0.7526 flac 1.0.3 (-3) 0:28.29 0:20.82 25.16 MB 0.7539 Ogg Squish 0.98 ? ? 25.23 MB 0.7558 WavPack 3.91 (high) 0:20.50 ? 25.33 MB 0.7589 Kexis 0.2.2 0:47.13 0:40.67 26.03 MB 0.7799 flac 1.0.3 (-1) 0:24.95 0:22.70 26.09 MB 0.7818 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   Alanis Morisette Hand In My Pocket 39.09 MB 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 3.96 (extra high) 1:21.38 1:27.28 21.54 MB 0.5509 Monkey's Audio 3.96 (high) 0:42.54 0:47.41 21.75 MB 0.5563 Monkey's Audio 3.96 (normal) 0:35.45 0:39.65 21.84 MB 0.5586 optimFROG 4.21 (mode 0 @ 4x) 0:51.39 0:54.97 21.89 MB 0.5598 Monkey's Audio 3.96 (fast) 0:28.23 0:33.21 22.16 MB 0.5668 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 1.0.3 (-8) 2:48.45 0:23.47 23.45 MB 0.5997 flac 1.0.3 (-5, default) 0:41.00 0:23.59 23.55 MB 0.6025 Ogg Squish 0.98 ? ? 24.11 MB 0.6167 WavPack 3.91 (high) 0:22.50 ? 24.22 MB 0.6196 flac 1.0.3 (-3) 0:31.65 0:22.27 24.32 MB 0.6220 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 1.0.3 (-1) 0:27.51 0:22.72 24.81 MB 0.6347 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   Gloria Estefan Conga 45.15 MB optimFROG 4.21 (mode 4 @ 1x) 19:40.53 19:44.47 29.43 MB 0.6517 optimFROG 4.21 (mode 1 @ 4x) 1:26.64 1:32.23 29.58 MB 0.6550 Monkey's Audio 3.96 (extra high) 1:35.65 1:42.11 29.65 MB 0.6567 optimFROG 4.21 (mode 0 @ 4x) 0:59.59 1:05.29 29.78 MB 0.6595 Monkey's Audio 3.96 (high) 0:50.17 0:56.40 29.85 MB 0.6610 Monkey's Audio 3.96 (normal) 0:42.27 0:47.74 29.97 MB 0.6637 Monkey's Audio 3.96 (fast) 0:33.46 0:39.22 30.30 MB 0.6710 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 1.0.3 (-8) 3:18.77 0:28.57 30.75 MB 0.6811 LPAC 1.40 (-r, normal) 1:14.08 0:44.64 30.81 MB 0.6823 flac 1.0.3 (-5, default) 0:48.11 0:27.84 30.85 MB 0.6833 WavPack 3.91 (high) 0:26.73 ? 30.91 MB 0.6845 Ogg Squish 0.98 ? ? 31.06 MB 0.6879 flac 1.0.3 (-3) 0:37.46 0:27.80 31.63 MB 0.7005 flac 1.0.3 (-1) 0:32.55 0:27.42 31.99 MB 0.7085 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 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   Cream White Room 53.01 MB optimFROG 4.21 (mode 4 @ 1x) 22:59.05 23:02.98 33.93 MB 0.6399 optimFROG 4.21 (mode 1 @ 4x) 1:42.28 1:47.55 33.96 MB 0.6405 Monkey's Audio 3.96 (extra high) 1:51.77 2:00.37 34.14 MB 0.6441 Monkey's Audio 3.96 (high) 0:58.45 1:04.59 34.29 MB 0.6468 optimFROG 4.21 (mode 0 @ 4x) 1:10.30 1:15.99 34.29 MB 0.6468 Monkey's Audio 3.96 (normal) 0:49.32 0:56.89 34.42 MB 0.6493 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 Bonk 0.5 2:35.36 1:56.20 34.96 MB 0.6595 Monkey's Audio 3.96 (fast) 0:38.75 0:46.80 34.99 MB 0.6601 flac 1.0.3 (-8) 3:53.21 0:32.08 35.00 MB 0.6602 flac 1.0.3 (-5, default) 0:57.28 0:32.27 35.17 MB 0.6634 flac 1.0.3 (-3) 0:42.71 0:32.56 35.37 MB 0.6672 Shorten 3.2a (-p8 -b2048) 0:51.44 0:33.02 35.40 MB 0.6677 WavPack 3.91 (high) 0:31.05 ? 35.60 MB 0.6715 Ogg Squish 0.98 ? ? 35.74 MB 0.6742 Shorten 3.2a (-p0 -b256, default) 0:41.14 0:28.91 36.42 MB 0.6870 flac 1.0.3 (-1) 0:38.47 0:30.66 36.56 MB 0.6896 Kexis 0.2.2 1:13.87 1:02.90 36.64 MB 0.6911 WaveZIP 0:35.77 ? 37.13 MB 0.7004   Maurice Ravel Fanfare from "L'eventail de Jeanne" 20.82 MB optimFROG 4.21 (mode 4 @ 1x) 8:22.42 8:23.32 6.82 MB 0.3274 Monkey's Audio 3.96 (extra high) 0:39.93 0:41.69 6.85 MB 0.3289 optimFROG 4.21 (mode 1 @ 4x) 0:36.57 0:38.26 7.09 MB 0.3406 Monkey's Audio 3.96 (high) 0:21.22 0:23.04 7.16 MB 0.3437 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 LPAC 1.40 (-r, normal) 0:29.01 0:15.11 7.33 MB 0.3520 Monkey's Audio 3.96 (normal) 0:18.19 0:19.54 7.44 MB 0.3575 Monkey's Audio 3.96 (fast) 0:13.70 0:15.72 7.64 MB 0.3671 flac 1.0.3 (-8) 1:21.11 0:09.72 7.68 MB 0.3691 flac 1.0.3 (-5, default) 0:19.97 0:09.77 7.71 MB 0.3702 flac 1.0.3 (-3) 0:15.09 0:10.09 7.77 MB 0.3733 Bonk 0.5 0:55.92 0:40.23 7.83 MB 0.3762 WavPack 3.91 (high) 0:11.42 ? 7.89 MB 0.3791 flac 1.0.3 (-1) 0:13.18 0:09.78 8.12 MB 0.3901 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   Maurice Ravel String Quartet (4th movement) 56.18 MB Monkey's Audio 3.96 (extra high) 1:54.09 2:01.72 20.47 MB 0.3642 optimFROG 4.21 (mode 4 @ 1x) 24:26.99 24:29.36 20.62 MB 0.3671 Monkey's Audio 3.96 (high) 0:58.14 1:06.45 20.80 MB 0.3702 optimFROG 4.21 (mode 1 @ 4x) 1:42.57 1:47.48 20.93 MB 0.3725 Monkey's Audio 3.96 (normal) 0:48.61 0:54.73 21.14 MB 0.3763 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 3.96 (fast) 0:37.30 0:44.79 21.54 MB 0.3835 LPAC 1.40 (-r, normal) 1:20.84 0:42.73 21.96 MB 0.3909 WavPack 3.91 (high) 0:30.03 ? 22.30 MB 0.3969 flac 1.0.3 (-8) 3:57.24 0:28.26 22.61 MB 0.4024 flac 1.0.3 (-5, default) 0:56.47 0:28.31 22.67 MB 0.4036 Bonk 0.5 2:33.53 1:51.94 23.18 MB 0.4125 flac 1.0.3 (-3) 0:41.66 0:27.63 23.21 MB 0.4131 flac 1.0.3 (-1) 0:36.76 0:29.54 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 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   Sergei Prokofiev Piano Concerto No.3 (3rd movement) 100.68 MB optimFROG 4.21 (mode 4 @ 1x) 43:21.88 43:26.18 33.58 MB 0.3335 Monkey's Audio 3.96 (extra high) 3:21.33 3:35.91 33.72 MB 0.3349 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 3.96 (high) 1:43.17 1:55.31 34.23 MB 0.3400 Monkey's Audio 3.96 (normal) 1:26.19 1:35.90 34.66 MB 0.3442 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 Monkey's Audio 3.96 (fast) 1:06.28 1:18.56 35.43 MB 0.3518 WavPack 3.91 (high) 0:53.49 ? 37.44 MB 0.3718 flac 1.0.3 (-8) 6:57.76 0:51.45 38.07 MB 0.3781 flac 1.0.3 (-5, default) 1:39.78 0:49.47 38.17 MB 0.3791 flac 1.0.3 (-3) 1:13.49 0:49.51 38.50 MB 0.3824 flac 1.0.3 (-1) 1:04.89 0:53.25 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 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   Frederic Chopin Prelude No.24 in d minor 27.46 MB Monkey's Audio 3.96 (extra high) 0:55.83 0:59.52 10.25 MB 0.3734 optimFROG 4.21 (mode 4 @ 1x) 11:56.24 11:58.77 10.34 MB 0.3764 optimFROG 4.21 (mode 1 @ 4x) 0:50.07 0:53.49 10.41 MB 0.3790 Monkey's Audio 3.96 (high) 0:28.52 0:31.32 10.47 MB 0.3812 optimFROG 4.21 (mode 0 @ 4x) 0:34.06 0:38.70 10.53 MB 0.3833 Monkey's Audio 3.96 (normal) 0:23.70 0:27.61 10.59 MB 0.3854 LPAC 1.40 (-r, normal) 0:34.91 0:20.01 10.74 MB 0.3911 RKAU 1.07 (normal) 0:54.46 0:41.54 10.88 MB 0.3963 Monkey's Audio 3.96 (fast) 0:18.53 0:21.80 10.94 MB 0.3982 WavPack 3.91 (high) 0:14.46 ? 11.38 MB 0.4145 flac 1.0.3 (-8) 1:54.97 0:13.68 11.69 MB 0.4255 flac 1.0.3 (-5, default) 0:27.35 0:14.06 11.71 MB 0.4264 flac 1.0.3 (-3) 0:20.43 0:14.59 11.73 MB 0.4273 flac 1.0.3 (-1) 0:17.24 0:14.17 11.86 MB 0.4318 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 Shorten 3.2a (-p8 -b2048) 0:24.43 0:14.32 14.40 MB 0.5242   Domenico Scarlatti Sonata K.42 (arr.Yepes for guitar) 16.39 MB Monkey's Audio 3.96 (extra high) 0:33.99 0:35.53 6.80 MB 0.4145 optimFROG 4.21 (mode 4 @ 1x) 7:08.77 7:09.52 6.87 MB 0.4190 Monkey's Audio 3.96 (high) 0:17.47 0:19.11 6.94 MB 0.4230 optimFROG 4.21 (mode 1 @ 4x) 0:30.47 0:31.95 6.98 MB 0.4255 Monkey's Audio 3.96 (normal) 0:14.84 0:16.17 7.02 MB 0.4284 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 Monkey's Audio 3.96 (fast) 0:11.39 0:12.95 7.19 MB 0.4384 LPAC 1.40 (-r, normal) 0:29.99 0:14.33 7.21 MB 0.4397 WavPack 3.91 (high) 0:09.23 ? 7.35 MB 0.4481 flac 1.0.3 (-8) 1:09.87 0:08.22 7.37 MB 0.4497 flac 1.0.3 (-5, default) 0:16.58 0:08.13 7.40 MB 0.4512 flac 1.0.3 (-3) 0:12.15 0:08.47 7.43 MB 0.4529 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 1.0.3 (-1) 0:10.74 0:08.20 7.52 MB 0.4590 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   The Benedictine Monks of Santo Domingo de Silos Laetatus sum 24.26 MB Monkey's Audio 3.96 (extra high) 0:50.72 0:54.20 12.15 MB 0.5006 optimFROG 4.21 (mode 4 @ 1x) 10:34.75 10:36.83 12.17 MB 0.5015 Monkey's Audio 3.96 (high) 0:26.36 0:28.52 12.25 MB 0.5048 RKAU 1.07 (normal) 0:57.64 0:41.39 12.25 MB 0.5049 optimFROG 4.21 (mode 1 @ 4x) 0:45.20 0:48.45 12.43 MB 0.5121 Monkey's Audio 3.96 (normal) 0:21.81 0:24.33 12.47 MB 0.5139 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 Bonk 0.5 1:08.18 0:49.70 12.71 MB 0.5237 Monkey's Audio 3.96 (fast) 0:16.91 0:20.60 12.80 MB 0.5277 flac 1.0.3 (-8) 1:45.27 0:14.22 12.82 MB 0.5285 flac 1.0.3 (-5, default) 0:24.98 0:13.94 12.92 MB 0.5324 flac 1.0.3 (-3) 0:19.00 0:13.16 12.98 MB 0.5348 WavPack 3.91 (high) 0:13.72 ? 13.06 MB 0.5384 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 1.0.3 (-1) 0:17.29 0:14.53 13.34 MB 0.5499 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   L. Subramaniam Raga Sivapriya 213.56 MB Monkey's Audio 3.96 (extra high) 7:17.86 7:50.75 91.73 MB 0.4295 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 3.96 (high) 3:46.78 4:12.36 93.69 MB 0.4387 optimFROG 4.21 (mode 0 @ 4x) 4:29.57 4:53.01 94.74 MB 0.4436 Monkey's Audio 3.96 (normal) 3:09.07 3:35.10 94.81 MB 0.4439 Monkey's Audio 3.96 (fast) 2:25.31 2:58.92 95.70 MB 0.4481 RKAU 1.07 (normal) 7:16.09 5:30.33 95.91 MB 0.4490 LPAC 1.40 (-r, normal) 4:34.06 2:37.68 96.84 MB 0.4534 flac 1.0.3 (-8) 15:16.08 2:00.10 98.01 MB 0.4589 flac 1.0.3 (-5, default) 3:37.33 1:58.73 98.41 MB 0.4608 WavPack 3.91 (high) 1:58.32 ? 98.82 MB 0.4627 Bonk 0.5 9:56.25 7:13.68 98.94 MB 0.4633 flac 1.0.3 (-3) 2:42.82 1:56.73 99.21 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 1.0.3 (-1) 2:22.18 1:54.92 103.59 MB 0.4850 WaveZIP 2:25.86 ? 107.47 MB 0.5032