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Multiformat listening test @ ~64kbps: Results, Results and post-test discussion
IgorC
post Apr 12 2011, 00:40
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The test is finished, results are available here:

http://listening-tests.hydrogenaudio.org/igorc/results.html

Summary: CELT/Opus won, Apple HE-AAC is better than Nero HE-AAC, and Vorbis has caught up with Nero HE-AAC.
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IgorC
post Apr 12 2011, 20:21
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motion_blur,

You can download the results of all listeners and compare them with yours. http://listening-tests.hydrogenaudio.org/i...ous/results.zip
They are too different.

Also why do you post samples with samplerate 96 kHz?



Hi, Chris,
I had also hard time to understand the bootstrap analysis.
Please, wait for detailed answer on it

As of Christoph's results, all of them were excluded. http://www.hydrogenaudio.org/forums/index....st&p=751768

This post has been edited by IgorC: Apr 12 2011, 20:39
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_mē_
post Apr 12 2011, 20:43
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Some presentation suggestions:
1. Codec versions and settings should be in the results or one clearly marked click away. I don't consider what is now to be clearly marked.
2. Links to results of older tests would be welcome.
3. I can't wait for the bitrate table. wink.gif
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Alex B
post Apr 12 2011, 21:06
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QUOTE (_mē_ @ Apr 12 2011, 22:43) *
2. Links to results of older tests would be welcome.

http://listeningtests.t35.com.

I have mirrored Roberto's and Sebastian's old test sites. Sebastian's tests are also available here: http://listening-tests.hydrogenaudio.org/sebastian/

QUOTE
3. I can't wait for the bitrate table.

Actually, a more useful presentation would be a comparison like this: http://www.hydrogenaudio.org/forums/index....st&p=593735
I.e. bitrates that represent real life usage, not the bitrates of these short test samples.

I am planning to do it, but the lack of application support for Opus (CELT) will make the process quite a bit more complex than before.

This post has been edited by Alex B: Apr 12 2011, 21:24


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Alex B
post Apr 13 2011, 11:38
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QUOTE (Alex B @ Apr 12 2011, 23:06) *
QUOTE (_mē_ @ Apr 12 2011, 22:43) *
3. I can't wait for the bitrate table.

Actually, a more useful presentation would be a comparison like this: http://www.hydrogenaudio.org/forums/index....st&p=593735
I.e. bitrates that represent real life usage, not the bitrates of these short test samples.

I am planning to do it, but the lack of application support for Opus (CELT) will make the process quite a bit more complex than before.

I have done it now.

I have used these two test sets, Various and Classical, for a long time. To see how these test tracks are handled by other encoders see for example the above linked post and my "LAME 3.98.2 VBR bitrate test, all -V settings in 0.5 step increments" thread: http://www.hydrogenaudio.org/forums/index....showtopic=67523

The bitrates are from foobar2000, except the Opus (CELT) bitrates, which are calculated from the exact file sizes and original durations. The encoding settings and encoder versions are the same as were used in the listening test. I resampled the source files to 48 kHz before encoding the Opus tracks (as was done in the listening test). The other test tracks have the original 44.1. kHz sample rate.











This post has been edited by Alex B: Apr 13 2011, 12:35


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NullC
post Apr 13 2011, 12:41
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QUOTE (Alex B @ Apr 13 2011, 02:38) *
The bitrates are from foobar2000, except the Opus (CELT) bitrates, which are calculated from the exact file sizes and original durations. The encoding settings and encoder versions are the same as were used in the listening test. I resampled the source files to 48 kHz before encoding the Opus tracks (as was done in the listening test). The other test tracks have the original 44.1. kHz sample rate.


Any idea if fb2000 is including the container overhead? It's not much, but e.g. on the opus files it's 1kbit/sec, which would explain the entire difference of the means here.

Also, I'm quite perplexed by the file that runs at 82kbit/sec: Unless the file is quite short the Opus encoder shouldn't currently be able to do that.

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Alex B
post Apr 13 2011, 14:46
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QUOTE (NullC @ Apr 13 2011, 14:41) *
Any idea if fb2000 is including the container overhead? It's not much, but e.g. on the opus files it's 1kbit/sec, which would explain the entire difference of the means here.

I don't know how foobar2000 gets the bitrate data, but here's a small comparison. The A values are from foobar2000. The B values are calculated from the file sizes and durations. (foobar2000 displays only integer values.)




QUOTE
Also, I'm quite perplexed by the file that runs at 82kbit/sec: Unless the file is quite short the Opus encoder shouldn't currently be able to do that.

The duration is 2 min 37 s. I have just rechecked the test files. The bitrate values appear to be correct. I'll send you a new PM soon.

This post has been edited by Alex B: Apr 13 2011, 15:11


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Posts in this topic
- IgorC   Multiformat listening test @ ~64kbps: Results   Apr 12 2011, 00:40
- - Garf   If someone can assist with a bitrate table or per-...   Apr 12 2011, 01:02
- - Garf   Oh, and given that Opus is open sourced, if one of...   Apr 12 2011, 01:06
- - AllanP   I just wonder one thing, when the Vorbis encoder w...   Apr 12 2011, 01:14
|- - Garf   QUOTE (AllanP @ Apr 12 2011, 02:14) I jus...   Apr 12 2011, 01:15
|- - AllanP   QUOTE (Garf @ Apr 12 2011, 02:15) You can...   Apr 12 2011, 01:22
- - romor   Congratulation to CELT/Opus! I wanted to com...   Apr 12 2011, 03:08
- - IgorC   I think the results of lessthanjoey and AlexB are ...   Apr 12 2011, 03:50
- - googlebot   I'm stunned by the CELT/Opus results! I wo...   Apr 12 2011, 08:06
|- - NullC   QUOTE (googlebot @ Apr 11 2011, 23:06) I...   Apr 14 2011, 05:00
|- - saratoga   QUOTE (NullC @ Apr 14 2011, 00:00) We als...   Apr 14 2011, 06:29
||- - NullC   QUOTE (saratoga @ Apr 13 2011, 22:29) Is ...   Apr 14 2011, 08:30
|- - Garf   QUOTE (NullC @ Apr 14 2011, 06:00) Low-la...   Apr 14 2011, 12:19
|- - jmvalin   QUOTE (Garf @ Apr 14 2011, 07:19) Is the ...   Apr 14 2011, 14:04
|- - NullC   QUOTE (Garf @ Apr 14 2011, 03:19) QUOTE (...   Apr 14 2011, 17:47
|- - C.R.Helmrich   QUOTE (NullC @ Apr 14 2011, 18:47) The sw...   Apr 14 2011, 23:39
|- - jmvalin   QUOTE (C.R.Helmrich @ Apr 14 2011, 18:39)...   Apr 15 2011, 05:49
- - Alex B   Thanks guys! Interesting results. One note t...   Apr 12 2011, 12:59
|- - Garf   QUOTE (Alex B @ Apr 12 2011, 13:59) I got...   Apr 12 2011, 13:53
|- - NullC   QUOTE For processing the result .txt files with ch...   Apr 12 2011, 14:48
|- - Garf   QUOTE (NullC @ Apr 12 2011, 15:48) Sounds...   Apr 12 2011, 14:59
||- - Alex B   QUOTE (Garf @ Apr 12 2011, 16:59) But the...   Apr 12 2011, 15:09
|- - Alex B   QUOTE (NullC @ Apr 12 2011, 16:48) Sounds...   Apr 12 2011, 15:02
|- - NullC   QUOTE (Alex B @ Apr 12 2011, 07:02) QUOTE...   Apr 12 2011, 15:17
|- - motion_blur   QUOTE (Alex B @ Apr 12 2011, 16:02) QUOTE...   Apr 12 2011, 16:15
|- - NullC   QUOTE (motion_blur @ Apr 12 2011, 08:15) ...   Apr 12 2011, 17:54
|- - motion_blur   QUOTE (NullC @ Apr 12 2011, 18:54) QUOTE ...   Apr 12 2011, 19:42
- - Alex B   For comparison I uploaded a rar package of my ...   Apr 12 2011, 14:14
|- - Garf   QUOTE (Alex B @ Apr 12 2011, 15:14) For c...   Apr 12 2011, 14:49
- - Alex B   QUOTE (Garf @ Apr 12 2011, 16:59) But the...   Apr 12 2011, 15:35
|- - Garf   QUOTE (Alex B @ Apr 12 2011, 16:35) QUOTE...   Apr 12 2011, 15:42
- - Alex B   Regarding the bitrate table, I guess that CELT/Op...   Apr 12 2011, 16:14
|- - NullC   QUOTE (Alex B @ Apr 12 2011, 08:14) Regar...   Apr 12 2011, 18:10
- - IgorC   Yes, I was too strict. Sorry about it. Some of th...   Apr 12 2011, 18:13
|- - motion_blur   QUOTE (IgorC @ Apr 12 2011, 19:13) Yes, I...   Apr 12 2011, 20:09
|- - NullC   QUOTE (motion_blur @ Apr 12 2011, 12:09) ...   Apr 13 2011, 00:59
|- - motion_blur   QUOTE (NullC @ Apr 13 2011, 01:59) QUOTE ...   Apr 13 2011, 10:06
- - markanini   I figured ratings would vary between testers depen...   Apr 12 2011, 18:52
|- - NullC   QUOTE (markanini @ Apr 12 2011, 09:52) I ...   Apr 12 2011, 20:57
- - lessthanjoey   I've done some more testing with headphones af...   Apr 12 2011, 19:51
- - C.R.Helmrich   Thanks for organizing the tests, guys! Sorry f...   Apr 12 2011, 20:11
|- - motion_blur   QUOTE (C.R.Helmrich @ Apr 12 2011, 21:11)...   Apr 12 2011, 20:41
|- - Garf   QUOTE Please provide the number of valid results (...   Apr 12 2011, 21:44
||- - C.R.Helmrich   Sorry, Christoph, can't reproduce it. What you...   Apr 12 2011, 22:12
||- - Garf   QUOTE (C.R.Helmrich @ Apr 12 2011, 23:12)...   Apr 12 2011, 23:37
||- - motion_blur   QUOTE (C.R.Helmrich @ Apr 12 2011, 23:12)...   Apr 13 2011, 00:41
|- - NullC   QUOTE (C.R.Helmrich @ Apr 12 2011, 11:11)...   Apr 12 2011, 21:47
- - IgorC   motion_blur, You can download the results of all...   Apr 12 2011, 20:21
|- - _mē_   Some presentation suggestions: 1. Codec versions a...   Apr 12 2011, 20:43
|- - IgorC   QUOTE (_mē_ @ Apr 12 2011, 16:43) Some pr...   Apr 12 2011, 20:46
|- - Alex B   QUOTE (_mē_ @ Apr 12 2011, 22:43) 2. Link...   Apr 12 2011, 21:06
||- - Alex B   QUOTE (Alex B @ Apr 12 2011, 23:06) QUOTE...   Apr 13 2011, 11:38
||- - NullC   QUOTE (Alex B @ Apr 13 2011, 02:38) The b...   Apr 13 2011, 12:41
||- - Garf   QUOTE (NullC @ Apr 13 2011, 13:41) QUOTE ...   Apr 13 2011, 12:54
||- - Alex B   QUOTE (NullC @ Apr 13 2011, 14:41) Any id...   Apr 13 2011, 14:46
||- - NullC   QUOTE (Alex B @ Apr 13 2011, 05:46) QUOTE...   Apr 13 2011, 22:48
|- - Garf   QUOTE (_mē_ @ Apr 12 2011, 21:43) Some pr...   Apr 12 2011, 22:24
- - Alex B   Here is the raw data for a bitrate table. The bitr...   Apr 12 2011, 20:30
- - IgorC   Thank you for your help, AlexB. If you can do the ...   Apr 12 2011, 20:44
- - C.R.Helmrich   Christoph, do you mean the slightly washed out bas...   Apr 12 2011, 20:52
|- - motion_blur   QUOTE (C.R.Helmrich @ Apr 12 2011, 21:52)...   Apr 12 2011, 21:11
|- - C.R.Helmrich   QUOTE (motion_blur @ Apr 12 2011, 22:11) ...   Apr 12 2011, 21:38
|- - motion_blur   QUOTE (C.R.Helmrich @ Apr 12 2011, 22:38)...   Apr 12 2011, 21:56
- - IgorC   I've checked. The decoder on Christoph's s...   Apr 12 2011, 20:54
- - Alex B   Here's the bitrate table: In Excel format: ...   Apr 12 2011, 22:20
|- - saintdev   QUOTE (Alex B @ Apr 12 2011, 14:20) Here...   Apr 12 2011, 23:21
- - NullC   QUOTE (IgorC @ Apr 11 2011, 16:40) The te...   Apr 13 2011, 04:42
|- - Garf   QUOTE (NullC @ Apr 13 2011, 05:42) Hey al...   Apr 13 2011, 08:27
||- - IgorC   QUOTE (Garf @ Apr 13 2011, 04:27) One thi...   Apr 14 2011, 05:57
|- - C.R.Helmrich   Thanks, Garf, for the plot! And thanks, Christ...   Apr 13 2011, 22:46
|- - Garf   QUOTE (C.R.Helmrich @ Apr 13 2011, 23:46)...   Apr 13 2011, 22:57
||- - C.R.Helmrich   QUOTE (Garf @ Apr 13 2011, 23:57) From th...   Apr 13 2011, 23:06
|- - jmvalin   QUOTE (C.R.Helmrich @ Apr 13 2011, 17:46)...   Apr 14 2011, 00:58
|- - Garf   QUOTE (jmvalin @ Apr 14 2011, 01:58) I do...   Apr 14 2011, 09:13
|- - jmvalin   QUOTE (Garf @ Apr 14 2011, 04:13) You are...   Apr 14 2011, 11:41
- - Garf   The result page is now updated with per-sample gra...   Apr 13 2011, 12:41
- - mixminus1   Thanks much to all for their work in both setting ...   Apr 13 2011, 14:55
|- - Garf   QUOTE (mixminus1 @ Apr 13 2011, 15:55) Th...   Apr 13 2011, 15:04
- - mixminus1   :facepalm: Good God... Thanks, Garf, I was scour...   Apr 13 2011, 15:15
- - romor   @Garf: can you please reupload results you posted ...   Apr 13 2011, 16:35
|- - Garf   QUOTE (romor @ Apr 13 2011, 17:35) @Garf:...   Apr 13 2011, 18:59
- - IgorC   AlexB, thank you for bitrate verification. I real...   Apr 13 2011, 17:12
- - pdq   Whether or not classical should be considered to b...   Apr 13 2011, 17:51
|- - IgorC   QUOTE (pdq @ Apr 13 2011, 13:51) Whether ...   Apr 13 2011, 18:01
|- - pdq   QUOTE (IgorC @ Apr 13 2011, 13:01) QUOTE ...   Apr 13 2011, 18:53
- - romor   file: http://people.xiph.org/~greg/opus/ha2011/2.....   Apr 13 2011, 19:28
|- - NullC   QUOTE (romor @ Apr 13 2011, 10:28) file: ...   Apr 13 2011, 19:53
- - IgorC   Bitrate verification on my set of albums: http:/...   Apr 13 2011, 21:45
|- - NullC   QUOTE (IgorC @ Apr 13 2011, 13:45) Bitrat...   Apr 21 2011, 19:15
|- - jmvalin   QUOTE (NullC @ Apr 21 2011, 14:15) QUOTE ...   Apr 21 2011, 19:53
- - Garf   QUOTE Has anyone ever seriously blind-tested e.g. ...   Apr 14 2011, 00:10
|- - C.R.Helmrich   QUOTE (Garf @ Apr 14 2011, 01:10) I'm...   Apr 14 2011, 10:46
- - .alexander.   The second graph seems to be consistent with ...   Apr 15 2011, 12:40
|- - jmvalin   QUOTE (.alexander. @ Apr 15 2011, 07:40) ...   Apr 15 2011, 15:17
- - Xanikseo   QUOTE (IgorC @ Apr 13 2011, 21:45) Bitrat...   Apr 20 2011, 16:34
|- - Garf   QUOTE (Xanikseo @ Apr 20 2011, 17:34) Igo...   Apr 20 2011, 18:02
|- - IgorC   QUOTE (Xanikseo @ Apr 20 2011, 12:34) Igo...   Apr 20 2011, 18:19
|- - Zarggg   QUOTE (Xanikseo @ Apr 20 2011, 11:34) EDI...   Apr 20 2011, 19:09
- - Xanikseo   QUOTE (Zarggg @ Apr 20 2011, 19:09) QUOTE...   Apr 20 2011, 21:20
- - IgorC   NullC, h*tp://www.mediafire.com/?s7i9usu2qr27pcg ...   Apr 21 2011, 23:52
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