Opus 1.1_ABX @ 199kbps
Reply #5 –
Apologies, I tested at a variety of rates (96, 128, 160 and 199) so didn't keep the original logs to post. Fortunately, I had the same equipment with me this evening (Sony MDR-7506 headphones plugged directly into my ThinkPad X220 work laptop) so was able to re-do the 199kbps test.
As before, the lossless file has a static-like sound in the right channel between 0:03 and 0:05 and, to a slightly lesser extent, between 0:08 and 0:10. This sound is diminished in the Opus file.
Oddly, I scored 10/10 first time but failed a single instance this time around. Perhaps I should have refrained from using the term 'easily' in the sub-heading. Anyway, here's the log of tonight's test:
foo_abx 1.3.4 report
foobar2000 v1.3.6
2015/01/11 19:38:17
File A: C:\Users\ThinkPad\Downloads\1-04_WeirdFishes_sample.flac
File B: C:\Users\ThinkPad\Downloads\1-04_WeirdFishes_sample_199.opus
19:38:17 : Test started.
19:38:56 : 01/01 50.0%
19:39:10 : 02/02 25.0%
19:40:00 : 03/03 12.5%
19:40:55 : 04/04 6.3%
19:42:34 : 05/05 3.1%
19:43:40 : 06/06 1.6%
19:44:35 : 07/07 0.8%
19:46:01 : 08/08 0.4%
19:48:00 : 09/09 0.2%
19:52:04 : 09/10 1.1%
19:52:40 : 10/11 0.6%
19:53:07 : 11/12 0.3%
19:53:46 : 12/13 0.2%
19:54:52 : 13/14 0.1%
19:55:32 : 14/15 0.0%
19:56:23 : 15/16 0.0%
19:56:25 : Test finished.
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Total: 15/16 (0.0%)