-qo in 3.96
Reply #2 – 2004-08-02 17:29:24
SAMPLE : biniou.wav (I remember that I've uploaded this sample long time ago; I don't know if it's still available)EDIT: link is http://membres.lycos.fr/guruboolez/AUDIO/s...r_ahead_aac.piz (rename .piz to .zip) RANGE : 0:05.5' - 0:08.0'SETTINGS : 3.96.1 --preset cbr 128 vs 3.96.1 --preset cbr 128 -q0foo_abx v1.2 report foobar2000 v0.8.3 2004/08/02 17:57:55 File A: file://C:\biniou CBR128.mp3 File B: file://C:\biniou CBR128 Q0.mp3 17:57:58 : Test started. 17:59:49 : 00/01 100.0% 17:59:57 : 00/02 100.0% 18:00:02 : 01/03 87.5% 18:00:13 : 01/04 93.8% 18:00:20 : 02/05 81.3% 18:00:30 : 03/06 65.6% 18:00:34 : 04/07 50.0% 18:00:39 : 05/08 36.3% 18:00:43 : 06/09 25.4% 18:00:48 : 07/10 17.2% 18:00:53 : 08/11 11.3% 18:00:58 : 09/12 7.3% 18:01:03 : 10/13 4.6% 18:01:13 : 11/14 2.9% 18:01:22 : 12/15 1.8% 18:01:27 : 13/16 1.1% 18:01:32 : 14/17 0.6% 18:01:36 : 15/18 0.4% 18:01:46 : 16/19 0.2% 18:01:59 : 17/20 0.1% 18:02:03 : Test finished. ---------- Total: 17/20 (0.1%) The first file (cbr by default) is less distorted. -q0 switch add some audible ringing. Two comments: • the 4 first trials were performed on another testing range. • the ringing could be visualize in a frequency editor: there's a lot of missing information between the two encodings, and -q0 looks like a Gruyère cheese. I suppose that developers could work on the problem without listening test. • 3.97a3 at -q0 is identical to 3.96.1 at the same setting.SAMPLE : Dom Bedos.wav - organ, available on ftp://ftp2.foobar2000.net/foobar/Dom_Bedos.zip RANGE : four first secondsSETTINGS : 3.96.1 --preset cbr 128 vs 3.96.1 --preset cbr 128 -q0foo_abx v1.2 report foobar2000 v0.8.3 2004/08/02 18:21:39 File A: file://C:\temp\HA PACK\__samples\Dom Bedos#3 CBR128.mp3 File B: file://C:\temp\HA PACK\__samples\Dom Bedos#3.mp3 18:21:42 : Test started. 18:21:52 : 01/01 50.0% 18:22:01 : 02/02 25.0% 18:22:04 : 03/03 12.5% 18:22:08 : 04/04 6.3% 18:22:11 : 05/05 3.1% 18:22:15 : 06/06 1.6% 18:22:20 : 07/07 0.8% 18:22:23 : 08/08 0.4% 18:22:26 : 09/09 0.2% 18:22:30 : 10/10 0.1% 18:22:34 : 11/11 0.0% 18:22:38 : 12/12 0.0% 18:22:41 : 13/13 0.0% 18:22:44 : 14/14 0.0% 18:22:47 : 15/15 0.0% 18:22:51 : 16/16 0.0% 18:22:53 : Test finished. ---------- Total: 16/16 (0.0%) Here, the ringing introduced by -q0 is simply awfull!! (and of course, obvious). I suppose that even untrained people could hear the problem. Again, the difference and the problem with -q0 could be visualized on a frequency editor. I think that NeoRenagade had just founded a real problem with lame -q0.EDIT: link for biniou sample added