ABC/HR for Java, Version 0.5b, 14 décembre 2005 Testname: SongForGuy Tester: guruboolez 1L = Sample16\SongForGuy_3.wav 2R = Sample16\SongForGuy_1.wav 3L = Sample16\SongForGuy_4.wav 4L = Sample16\SongForGuy_2.wav 5R = Sample16\SongForGuy_6.wav 6L = Sample16\SongForGuy_5.wav --------------------------------------- General Comments: amusing comment: I ABXed everything on a short range, and all encodings appeared as ugly on quick'n direct comparison. If I had to base my marking on this experience, no mark would go past 2.5! => Advice for the future: always ABX files AFTER A-B evaluation and ranking. --------------------------------------- 1L File: Sample16\SongForGuy_3.wav 1L Rating: 4.4 1L Comment: If one encoding could be suspected of lowering the quality on the second half compared to the first one, it would be this one. But this time I'm not sure: the difference is fragile. The piano has no pre-echo on range [03.00 - 04.00] and [6.50 - 08.00] but has smearing on [10.50 - 12.00]. Pre-echo audible on some piano notes but not others is something is often noticed with MP3 in the past (the amount of probably is maybe in relation with frames boudaries). Furthemore, the smearing introduced on the end is really subtle (no clear drop in quality contrary to previous cases). That's why I'm can't be sure that the end of the regression heard on the end has something to do with weird regressions heard previously after 12...15 seconds. I'd like to discover the results to see what really happened here. AFTER ABX: lowpass is audible, but less obvious than 5R and 6L --------------------------------------- 2R File: Sample16\SongForGuy_1.wav 2R Rating: 4.6 2R Comment: slight smearing on piano notes --------------------------------------- 3L File: Sample16\SongForGuy_4.wav 3L Rating: 2.0 3L Comment: --------------------------------------- 4L File: Sample16\SongForGuy_2.wav 4L Rating: 3.8 4L Comment: smearing, audible but not too irritating. Audible lowpass. Sometimes distorted (1.27 - 3.00) --------------------------------------- 5R File: Sample16\SongForGuy_6.wav 5R Rating: 4.2 5R Comment: sharp, clean, but audible lowpass --------------------------------------- 6L File: Sample16\SongForGuy_5.wav 6L Rating: 4.8 6L Comment: loss in details, perceptible on the end (cf range used for ABX comparisons) --------------------------------------- ABX Results: Original vs Sample16\SongForGuy_3.wav 10 out of 10, pval < 0.001 Original vs Sample16\SongForGuy_2.wav 10 out of 10, pval < 0.001 Original vs Sample16\SongForGuy_5.wav 10 out of 10, pval < 0.001 Original vs Sample16\SongForGuy_1.wav 9 out of 10, pval = 0.01 Original vs Sample16\SongForGuy_6.wav 9 out of 10, pval = 0.01 ---- Detailed ABX results ---- Original vs Sample16\SongForGuy_3.wav Playback Range: 10.909 to 12.089 10:12:36 PM p 1/1 pval = 0.5 10:12:39 PM p 2/2 pval = 0.25 10:12:41 PM p 3/3 pval = 0.125 10:12:43 PM p 4/4 pval = 0.062 10:12:45 PM p 5/5 pval = 0.031 10:12:47 PM p 6/6 pval = 0.015 10:12:49 PM p 7/7 pval = 0.0070 10:12:51 PM p 8/8 pval = 0.0030 10:12:53 PM p 9/9 pval = 0.0010 10:12:59 PM p 10/10 pval < 0.001 Original vs Sample16\SongForGuy_2.wav Playback Range: 10.909 to 12.089 10:11:23 PM p 1/1 pval = 0.5 10:11:25 PM p 2/2 pval = 0.25 10:11:27 PM p 3/3 pval = 0.125 10:11:29 PM p 4/4 pval = 0.062 10:11:31 PM p 5/5 pval = 0.031 10:11:33 PM p 6/6 pval = 0.015 10:11:34 PM p 7/7 pval = 0.0070 10:11:35 PM p 8/8 pval = 0.0030 10:11:37 PM p 9/9 pval = 0.0010 10:11:38 PM p 10/10 pval < 0.001 Original vs Sample16\SongForGuy_5.wav Playback Range: 10.909 to 12.089 10:10:03 PM p 1/1 pval = 0.5 10:10:05 PM p 2/2 pval = 0.25 10:10:07 PM p 3/3 pval = 0.125 10:10:09 PM p 4/4 pval = 0.062 10:10:16 PM p 5/5 pval = 0.031 10:10:18 PM p 6/6 pval = 0.015 10:10:24 PM p 7/7 pval = 0.0070 10:10:27 PM p 8/8 pval = 0.0030 10:10:36 PM p 9/9 pval = 0.0010 10:10:38 PM p 10/10 pval < 0.001 Original vs Sample16\SongForGuy_1.wav Playback Range: 10.909 to 12.089 10:11:54 PM f 0/1 pval = 1.0 10:11:59 PM p 1/2 pval = 0.75 10:12:01 PM p 2/3 pval = 0.5 10:12:08 PM p 3/4 pval = 0.312 10:12:10 PM p 4/5 pval = 0.187 10:12:12 PM p 5/6 pval = 0.109 10:12:15 PM p 6/7 pval = 0.062 10:12:17 PM p 7/8 pval = 0.035 10:12:19 PM p 8/9 pval = 0.019 10:12:24 PM p 9/10 pval = 0.01 Original vs Sample16\SongForGuy_6.wav Playback Range: 10.909 to 12.089 10:10:54 PM f 0/1 pval = 1.0 10:10:56 PM p 1/2 pval = 0.75 10:10:58 PM p 2/3 pval = 0.5 10:10:59 PM p 3/4 pval = 0.312 10:11:01 PM p 4/5 pval = 0.187 10:11:03 PM p 5/6 pval = 0.109 10:11:04 PM p 6/7 pval = 0.062 10:11:05 PM p 7/8 pval = 0.035 10:11:07 PM p 8/9 pval = 0.019 10:11:08 PM p 9/10 pval = 0.01