Results:
ABC/HR Version 1.0, 6 May 2004
Testname: grcitrance MP4/OPUS
1R = M:\grcopus32.wav
2L = M:\grc64MP4.wav
3L = M:\grc64MP4cbr.wav
4R = M:\grc32MP4.wav
5L = M:\grcopus48.wav
6R = M:\grcopus64.wav
7R = M:\grc48MP4.wav
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General Comments:
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1R File: M:\grcopus32.wav
1R Rating: 2.5
1R Comment: Extremely rough
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2L File: M:\grc64MP4.wav
2L Rating: 3.6
2L Comment: Kinda duller and the upper freqs are distorted
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3L File: M:\grc64MP4cbr.wav
3L Rating: 3.6
3L Comment: cant tell apart from sample2, I believe it's slightly better
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4R File: M:\grc32MP4.wav
4R Rating: 2.4
4R Comment: Somewhat less rough than sample1 but has reduced stereo
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5L File: M:\grcopus48.wav
5L Rating: 2.9
5L Comment: Less distortion than 1 but more than 2 and 3
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6R File: M:\grcopus64.wav
6R Rating: 4.1
6R Comment: Noticeably rougher treble than original and slightly dull but otherwise pretty good
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7R File: M:\grc48MP4.wav
7R Rating: 2.8
7R Comment: It has less distortion in the upper freqs than 5 but sounds duller like the upper freq was cut completely and stereo is reduced
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ABX Results:
Original vs M:\grcopus32.wav
9 out of 10, pval = 0.011
Original vs M:\grc64MP4.wav
10 out of 10, pval < 0.001
Original vs M:\grc64MP4cbr.wav
10 out of 10, pval < 0.001
Original vs M:\grcopus64.wav
10 out of 11, pval = 0.006
M:\grc64MP4.wav vs M:\grc64MP4cbr.wav
3 out of 5, pval = 0.500
OGG sounds worse than Nero AAC, your own listening tests proved it before you started biasing the results.
I'm aware the tests are VBR, they STILL have to match the target bitrate as much as possible for the test to be scientific. All the bitrates in my test are VBR but they also are adjusted to be as close to 32, 48 or 64 kb/s as possible, I'm not gonna allow opus to go all the way up to 80 if the target is 64. Not too hard to comprehend. The truth is in the middle. Stop going to extremes and thinking CBR is your only other option. Do VBR and adjust the quality setting to match the bitrate. Stop thinking in black and white.
And I've been lurking here since 2007, thanks. I just rarely post. You run a tightly-moderated fascist hierarchy and are overrun with trolls and people with serious problems. I'll move to North Korea if I wanna deal with that.
I never use parametric stereo, I add -he to Nero. PS makes everything sound worse.
WMA superiority: http://en.wikipedia.org/wiki/Windows_Media...o#Sound_quality I can't find the PDF at the moment, the link is outdated.
I'm guessing he's in violation of TOS #12, though I can't prove it at the moment.
And the fascistic impulse reveals itself already, didn't take too long I see. I wonder why many don't post here...