Re: [LAU] ABX test (was Re: What is the best MP3 encoder?)

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To: <linux-audio-user@...>
Date: Wednesday, April 3, 2013 - 9:34 am

Quoting Ralf Mardorf :

> audio ABX tests are absolutely correct, MP3s not only sound lossless,

Despite your slight sarcasm an ABX audio test *is* correct.
For that particular song, that particular encoder and that particular
listener.

If you score, say, a 5% guessing probabililty in a 10 run test that
means that it's very likely you really *can* hear the difference
between the two files and hence the encoder isn't transparent.
And, to clarify if it hasnt been made clear before, an ABX when it
comes to testing a particular codec (lame, FhG, Xing) or encoder type
(mp3, vorbis, opus, aac) really isn't "which file sounds better", it's
"do I hear the difference between the two files".
If you *do* hear the difference it's obviously your prerogative to
claim that the encoded file sound shite, even though the test in
itself doesn't ask that question, but if your score is around 50% you
really wouldn't have a leg to stand on then it comes to such a claim.

> I can't continue this discussion, I've to do some ABX tests to find out

Since you don't list any encoder test you really should try one once,
just to be able to say "been there, done that, beat it".
If you look at the video (http://www.youtube.com/watch?v=jt7GyFW4hOI)
it really isn't that complicated to set up and with your golden ears
you should be able to fly through a 10 run test with a 0.1% guess
probability in less than 2 minutes.

- Peder
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Messages in current thread:
[LAU] What is the best MP3 encoder?, Jostein Chr. Andersen, (Thu Mar 28, 3:10 pm)
Re: [LAU] What is the best MP3 encoder?, Marius Jan├čen, (Thu Mar 28, 4:14 pm)
Re: [LAU] What is the best MP3 encoder?, Brett McCoy, (Thu Mar 28, 3:24 pm)
Re: [LAU] What is the best MP3 encoder?, Jostein Chr. Andersen, (Thu Mar 28, 3:35 pm)
Re: [LAU] What is the best MP3 encoder?, Brett McCoy, (Thu Mar 28, 4:01 pm)
Re: [LAU] What is the best MP3 encoder?, Jostein Chr. Andersen, (Thu Mar 28, 4:08 pm)
Re: [LAU] What is the best MP3 encoder?, Raffaele Morelli, (Thu Mar 28, 3:43 pm)
Re: [LAU] What is the best MP3 encoder?, Jostein Chr. Andersen, (Thu Mar 28, 4:05 pm)
Re: [LAU] What is the best MP3 encoder?, Leigh Dyer, (Fri Mar 29, 7:27 am)
Re: [LAU] What is the best MP3 encoder?, ben, (Fri Mar 29, 6:08 pm)
Re: [LAU] What is the best MP3 encoder?, Jostein Chr. Andersen, (Fri Mar 29, 9:49 am)
Re: [LAU] What is the best MP3 encoder?, Peder Hedlund, (Tue Apr 2, 7:31 am)
Re: [LAU] What is the best MP3 encoder?, Jostein Chr. Andersen, (Tue Apr 2, 9:07 am)
Re: [LAU] What is the best MP3 encoder?, Paul Davis, (Tue Apr 2, 11:38 am)
Re: [LAU] What is the best MP3 encoder?, Jostein Chr. Andersen, (Tue Apr 2, 11:56 am)
Re: [LAU] What is the best MP3 encoder?, Peder Hedlund, (Tue Apr 2, 12:12 pm)
Re: [LAU] What is the best MP3 encoder?, Jostein Chr. Andersen, (Tue Apr 2, 12:39 pm)
Re: [LAU] What is the best MP3 encoder?, Paul Davis, (Tue Apr 2, 12:08 pm)
Re: [LAU] What is the best MP3 encoder?, Felix Homann, (Tue Apr 2, 12:56 pm)
Re: [LAU] What is the best MP3 encoder?, Paul Davis, (Tue Apr 2, 2:16 pm)
Re: [LAU] What is the best MP3 encoder?, Jostein Chr. Andersen, (Tue Apr 2, 3:41 pm)
Re: [LAU] What is the best MP3 encoder?, Fons Adriaensen, (Tue Apr 2, 12:51 pm)
Re: [LAU] What is the best MP3 encoder?, Ralf Mardorf, (Tue Apr 2, 1:02 pm)
Re: [LAU] What is the best MP3 encoder?, Ralf Mardorf, (Tue Apr 2, 12:30 pm)
Re: [LAU] What is the best MP3 encoder?, Peder Hedlund, (Tue Apr 2, 9:51 am)
Re: [LAU] What is the best MP3 encoder?, Ralf Mardorf, (Tue Apr 2, 10:36 am)
Re: [LAU] What is the best MP3 encoder?, Peder Hedlund, (Tue Apr 2, 10:59 am)
Re: [LAU] What is the best MP3 encoder?, Ralf Mardorf, (Tue Apr 2, 12:08 pm)
Re: [LAU] What is the best MP3 encoder?, Peder Hedlund, (Tue Apr 2, 12:35 pm)
Re: [LAU] What is the best MP3 encoder?, Chris Bannister, (Tue Apr 2, 3:00 pm)
Re: [LAU] What is the best MP3 encoder?, Ralf Mardorf, (Tue Apr 2, 3:24 pm)
[LAU] ABX test (was Re: What is the best MP3 encoder?), Peder Hedlund, (Tue Apr 2, 8:43 pm)
Re: [LAU] ABX test (was Re: What is the best MP3 encoder?), Florian Paul Schmidt, (Wed Apr 3, 7:12 am)
Re: [LAU] ABX test (was Re: What is the best MP3 encoder?), Raffaele Morelli, (Thu Apr 4, 5:39 am)
Re: [LAU] ABX test (was Re: What is the best MP3 encoder?), Florian Paul Schmidt, (Wed Apr 3, 6:22 pm)
Re: [LAU] ABX test (was Re: What is the best MP3 encoder?), Monty Montgomery, (Wed Apr 3, 6:31 pm)
Re: [LAU] ABX test (was Re: What is the best MP3 encoder?), Monty Montgomery, (Wed Apr 3, 9:38 pm)
Re: [LAU] ABX test (was Re: What is the best MP3 encoder?), Monty Montgomery, (Wed Apr 3, 6:49 pm)
Re: [LAU] ABX test (was Re: What is the best MP3 encoder?), Raffaele Morelli, (Thu Apr 4, 5:44 am)
Re: [LAU] ABX test (was Re: What is the best MP3 encoder?), Monty Montgomery, (Thu Apr 4, 5:48 am)
Re: [LAU] ABX test (was Re: What is the best MP3 encoder?), Monty Montgomery, (Thu Apr 4, 5:53 pm)
Re: [LAU] ABX test (was Re: What is the best MP3 encoder?), Raffaele Morelli, (Thu Apr 4, 10:02 am)
Re: [LAU] ABX test (was Re: What is the best MP3 encoder?), Florian Paul Schmidt, (Wed Apr 3, 7:30 am)
Re: [LAU] ABX test (was Re: What is the best MP3 encoder?), Florian Paul Schmidt, (Wed Apr 3, 6:43 am)
Re: [LAU] ABX test (was Re: What is the best MP3 encoder?), Raffaele Morelli, (Wed Apr 3, 7:03 am)
Re: [LAU] ABX test (was Re: What is the best MP3 encoder?), Raffaele Morelli, (Wed Apr 3, 6:18 am)
Re: [LAU] ABX test (was Re: What is the best MP3 encoder?), Peder Hedlund, (Wed Apr 3, 9:34 am)
Re: [LAU] ABX test (was Re: What is the best MP3 encoder?), Raffaele Morelli, (Wed Apr 3, 9:02 am)
Re: [LAU] ABX test (was Re: What is the best MP3 encoder?), Raffaele Morelli, (Wed Apr 3, 10:35 am)
Re: [LAU] ABX test (was Re: What is the best MP3 encoder?), Florian Paul Schmidt, (Wed Apr 3, 10:51 am)
Re: [LAU] What is the best MP3 encoder?, Florian Paul Schmidt, (Tue Apr 2, 1:29 pm)
Re: [LAU] What is the best MP3 encoder?, Ralf Mardorf, (Tue Apr 2, 2:07 pm)
Re: [LAU] What is the best MP3 encoder?, Florian Paul Schmidt, (Tue Apr 2, 12:58 pm)
Re: [LAU] What is the best MP3 encoder?, Peder Hedlund, (Tue Apr 2, 1:11 pm)
Re: [LAU] What is the best MP3 encoder?, Ralf Mardorf, (Tue Apr 2, 1:42 pm)
Re: [LAU] What is the best MP3 encoder?, Raffaele Morelli, (Tue Apr 2, 12:51 pm)
Re: [LAU] What is the best MP3 encoder?, Ralf Mardorf, (Tue Apr 2, 12:44 pm)
Re: [LAU] What is the best MP3 encoder?, Gene Heskett, (Tue Apr 2, 3:32 pm)
Re: [LAU] What is the best MP3 encoder?, Ralf Mardorf, (Tue Apr 2, 4:13 pm)
Re: [LAU] What is the best MP3 encoder?, Gene Heskett, (Tue Apr 2, 5:13 pm)
Re: [LAU] What is the best MP3 encoder?, Paul Davis, (Tue Apr 2, 3:37 pm)
Re: [LAU] What is the best MP3 encoder?, Fons Adriaensen, (Tue Apr 2, 4:48 pm)
Re: [LAU] What is the best MP3 encoder?, Peder Hedlund, (Tue Apr 2, 1:34 pm)
Re: [LAU] What is the best MP3 encoder?, Ralf Mardorf, (Tue Apr 2, 2:33 pm)
Re: [LAU] What is the best MP3 encoder?, Ralf Mardorf, (Tue Apr 2, 2:36 pm)
Re: [LAU] What is the best MP3 encoder?, Bill Gribble, (Tue Apr 2, 1:28 pm)
Re: [LAU] What is the best MP3 encoder?, Raffaele Morelli, (Tue Apr 2, 9:42 am)
Re: [LAU] What is the best MP3 encoder?, Jostein Chr. Andersen, (Tue Apr 2, 9:51 am)
Re: [LAU] What is the best MP3 encoder?, Raffaele Morelli, (Tue Apr 2, 10:13 am)
Re: [LAU] What is the best MP3 encoder?, Ralf Mardorf, (Tue Apr 2, 10:56 am)
Re: [LAU] What is the best MP3 encoder?, Raffaele Morelli, (Thu Mar 28, 4:48 pm)
Re: [LAU] What is the best MP3 encoder?, Jostein Chr. Andersen, (Thu Mar 28, 5:31 pm)
Re: [LAU] What is the best MP3 encoder?, Chris Bannister, (Fri Mar 29, 2:32 am)
Re: [LAU] What is the best MP3 encoder?, Jostein Chr. Andersen, (Fri Mar 29, 9:43 am)
Re: [LAU] What is the best MP3 encoder?, Paul Davis, (Fri Mar 29, 2:43 am)
Re: [LAU] What is the best MP3 encoder? - 2, Jostein Chr. Andersen, (Thu Mar 28, 3:38 pm)
Re: [LAU] What is the best MP3 encoder? - 2, Len Ovens, (Thu Mar 28, 4:59 pm)