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64kbps public listening test, FINISHED
rjamorim
post Sep 22 2003, 09:10
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Hello.

There have been some delays, but here are the so awaited results of the latest 64kbps group blind listening test.

http://audio.ciara.us/test/64test/results.html

And the final plot:
Each vertical line segment represents the 95% confidence interval (using ANOVA analysis) for each codec.


Note: Lame MP3 is 128kbps "high anchor" in this test, FhG MP3 is the "low anchor"

Zoomed version without the anchors:


Codec specifications:
  • Ahead/Nero 6.0.0.15 HE AAC VBR profile Streaming :: Medium, high quality
  • Ogg Vorbis post-1.0 CVS -q 0
  • MP3pro (from Adobe Audition 1.0) VBR quality 40, Current Codec, allow M/S and IS, allow narrowing, no CRC
  • Real Audio Gecko (from Real Producer 9.0.1 64kbps
  • Windows Media Audio v9 VBR quality 50
  • QuickTime 6.3 AAC LC 64kbps, Best Quality
  • Lame MP3 encoder 3.90.3 --alt-preset 128 --scale 1. (high anchor)
  • FhG MP3 encoder (from Adobe Audition 1.0) 64kbps CBR, Current codec, allow M/S, no I/S, allow narrowing, no CRC. (low anchor)
Thanks to everyone that participated and helped!

Best regards;

Roberto.


--------------------
Get up-to-date binaries of Lame, AAC, Vorbis and much more at RareWares:
http://www.rarewares.org
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Continuum
post Sep 22 2003, 18:45
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GT3 is only real tuned for high bitrates (>160 kbit). It would be no better at 64 kbit than the standard version.
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Posts in this topic
- rjamorim   64kbps public listening test   Sep 22 2003, 09:10
- - bond   yummie hm, first time that i voted most of the c...   Sep 22 2003, 09:15
- - neoufo51   Interesting... I expect Vorbis to be a little hig...   Sep 22 2003, 09:20
- - rjamorim   Bloody 5:20 AM here. I'll read criticisms, co...   Sep 22 2003, 09:21
- - rjamorim   BTW: If the server starts with that redirection fa...   Sep 22 2003, 09:22
- - rjamorim   One last thing: People are invited to announce it ...   Sep 22 2003, 09:24
- - Ivan Dimkovic   Roberto, can you please move the anchors (low-hig...   Sep 22 2003, 09:26
- - Jon Ingram   The group results seem to be: Lame > He AAC, MP...   Sep 22 2003, 09:27
- - Gabriel   QUOTE the anchors (low-high) to the right - and/or...   Sep 22 2003, 09:28
- - rjamorim   QUOTE (Ivan Dimkovic @ Sep 22 2003, 05:26 AM)...   Sep 22 2003, 09:32
- - ScorLibran   Here are the averaged results of my own tests on j...   Sep 22 2003, 09:35
- - guruboolez   I obtained different results, with bad notation fo...   Sep 22 2003, 09:41
- - Jon Ingram   QUOTE (ScorLibran @ Sep 22 2003, 08:35 AM)The...   Sep 22 2003, 09:49
- - bond   edit: my zoomed in pic is already on the official ...   Sep 22 2003, 09:56
- - mcbevin   Hey, I think it might be worth emphasizing (or at ...   Sep 22 2003, 10:29
- - 2Bdecided   QUOTE (guruboolez @ Sep 22 2003, 08:41 AM)I o...   Sep 22 2003, 10:43
- - 2Bdecided   btw(!) Thanks for conducting such an excellent...   Sep 22 2003, 10:44
- - guruboolez   Note than Vorbis sufffered by an artifact (reverbe...   Sep 22 2003, 10:52
- - Continuum   QUOTE (Jon Ingram @ Sep 22 2003, 10:27 AM)The...   Sep 22 2003, 10:58
- - ScorLibran   QUOTE (Jon Ingram @ Sep 22 2003, 04:49 AM)Wit...   Sep 22 2003, 11:27
- - eloj   Slashdot is going to be hell if this is posted and...   Sep 22 2003, 11:31
- - teetee   QUOTE (2Bdecided @ Sep 22 2003, 10:44 AM)EDIT...   Sep 22 2003, 11:55
- - schnofler   My results looked like this: Lame, HE AAC > MP3...   Sep 22 2003, 12:04
- - phong   WOW, very interesting! The results are so far...   Sep 22 2003, 12:08
- - Garf   QUOTE (eloj @ Sep 22 2003, 12:31 PM)Also, how...   Sep 22 2003, 12:12
- - Vietwoojagig   Will the next test be a 96kbps test, with the same...   Sep 22 2003, 12:29
- - bond   QUOTE (Vietwoojagig @ Sep 22 2003, 01:29 PM)W...   Sep 22 2003, 12:31
- - phong   QUOTE (guruboolez)I'm not at ease with vorbis ...   Sep 22 2003, 12:36
- - Garf   QUOTE (bond @ Sep 22 2003, 01:31 PM)he-aac is...   Sep 22 2003, 12:46
- - Garf   QUOTE (phong @ Sep 22 2003, 01:36 PM)I hope 1...   Sep 22 2003, 12:47
- - bond   QUOTE (Garf @ Sep 22 2003, 01:46 PM)QUOTE (bo...   Sep 22 2003, 13:20
- - JohnV   QUOTE (bond @ Sep 22 2003, 03:20 PM)QUOTE (Ga...   Sep 22 2003, 13:42
- - bond   QUOTE (JohnV @ Sep 22 2003, 02:42 PM)Umm, jus...   Sep 22 2003, 13:48
- - JohnV   QUOTE (bond @ Sep 22 2003, 03:48 PM)QUOTE (Jo...   Sep 22 2003, 13:52
- - listen   Gosh! I only listened to one sample (New York...   Sep 22 2003, 14:00
- - sthayashi   Anyone else think it interesting that Ogg Vorbis w...   Sep 22 2003, 14:03
- - JohnV   QUOTE (sthayashi @ Sep 22 2003, 04:03 PM)Anyo...   Sep 22 2003, 14:06
- - Jojo   Great test! However, I wonder who is doing 64k...   Sep 22 2003, 14:09
- - JohnV   QUOTE (Jojo @ Sep 22 2003, 04:09 PM)By the wa...   Sep 22 2003, 14:18
- - Jon Ingram   QUOTE (Jojo @ Sep 22 2003, 01:09 PM)I hope th...   Sep 22 2003, 14:23
- - [proxima]   This is the table of my results: According to t...   Sep 22 2003, 14:34
- - amano   hmm, surprisingly wma was very close to the low an...   Sep 22 2003, 14:34
- - Atlantis   QUOTE (amano @ Sep 22 2003, 03:34 PM)hmm, sur...   Sep 22 2003, 14:36
- - rjamorim   QUOTE (Vietwoojagig @ Sep 22 2003, 08:29 AM)W...   Sep 22 2003, 14:41
- - bond   QUOTE (rjamorim @ Sep 22 2003, 03:41 PM)@bond...   Sep 22 2003, 14:44
- - Gecko   At first, let me thank Roberto for his efforts: th...   Sep 22 2003, 14:52
- - Garf   QUOTE (Jojo @ Sep 22 2003, 03:09 PM)Great tes...   Sep 22 2003, 15:01
- - Garf   QUOTE Many people found it hard to detect artifact...   Sep 22 2003, 15:04
- - rjamorim   Hello. Menno came with an idea: Replacing "L...   Sep 22 2003, 15:10
- - guruboolez   QUOTE (rjamorim @ Sep 22 2003, 03:10 PM)Hello...   Sep 22 2003, 15:21
- - rjamorim   QUOTE (guruboolez @ Sep 22 2003, 11:21 AM)Is ...   Sep 22 2003, 15:43
- - smok3   @rjamorim: tnx for organizing and conducting the ...   Sep 22 2003, 15:43
- - AstralStorm   Thank you rjamorim for making my results 'anon...   Sep 22 2003, 15:46
- - rjamorim   QUOTE (smok3 @ Sep 22 2003, 11:43 AM)flame ve...   Sep 22 2003, 15:47
- - rjamorim   QUOTE (AstralStorm @ Sep 22 2003, 11:46 AM)Th...   Sep 22 2003, 15:48
- - bond   good idea calling it low/high anchor (perhaps you ...   Sep 22 2003, 15:50
- - guruboolez   Glad to know anon1's name. It's one of the...   Sep 22 2003, 15:51
- - 2Bdecided   I was sad to be anon05 - I'll have to demand c...   Sep 22 2003, 16:18
- - ff123   QUOTE (2Bdecided @ Sep 22 2003, 07:18 AM)I wa...   Sep 22 2003, 16:31
- - c_haese   QUOTE (rjamorim @ Sep 22 2003, 09:47 AM)OK, I...   Sep 22 2003, 17:44
- - Niknak   Can you give us the actual bitrates or filesizes w...   Sep 22 2003, 17:49
- - de Mon   I can't understand why didn't the best ver...   Sep 22 2003, 18:42
- - Continuum   GT3 is only real tuned for high bitrates (>160 ...   Sep 22 2003, 18:45
- - sony666   the mp3PRO result is interesting.. too bad the for...   Sep 22 2003, 18:56
- - JohnV   QUOTE (de Mon @ Sep 22 2003, 08:42 PM)I can...   Sep 22 2003, 19:10
- - JohnV   QUOTE (sony666 @ Sep 22 2003, 08:56 PM)the mp...   Sep 22 2003, 19:17
- - AstralStorm   I can't read the comments from the site. If I...   Sep 22 2003, 19:22
- - de Mon   Thanks you for your replies, Continuum and JohnV. ...   Sep 22 2003, 21:54
- - Dologan   Heh, I find it weird that I usually scored MP3Pro ...   Sep 22 2003, 22:00
- - ff123   Results have been slashdotted: http://slashdot.or...   Sep 22 2003, 22:42
- - AstralStorm   My results: CODELAME     MP3Pro   H...   Sep 22 2003, 23:03
- - pseudoacoustic   Great test Roberto. However, I also cannot access ...   Sep 22 2003, 23:28
- - rjamorim   QUOTE (ff123 @ Sep 22 2003, 06:42 PM)Results ...   Sep 23 2003, 03:11
- - ff123   I always find stuff to reply to in the /. threads ...   Sep 23 2003, 04:17
- - Dologan   QUOTE (rjamorim @ Sep 22 2003, 08:11 PM)That ...   Sep 23 2003, 04:20
- - rjamorim   QUOTE (ff123 @ Sep 23 2003, 12:17 AM)I always...   Sep 23 2003, 04:47
- - phong   I added a big rant to the /. thread, but I don...   Sep 23 2003, 05:07
- - ScorLibran   QUOTE (From Slashdot) The poster offers an intere...   Sep 23 2003, 05:24
- - JohnV   ok ok.. everybody knows what kind of place slashdo...   Sep 23 2003, 05:31
- - rjamorim   LOL!   Sep 23 2003, 05:41
- - rjamorim   QUOTE (ScorLibran @ Sep 23 2003, 01:24 AM)Int...   Sep 23 2003, 05:50
- - phong   QUOTE (ScorLibran)Some people are like defective p...   Sep 23 2003, 06:10
- - ScorLibran   QUOTE (phong @ Sep 23 2003, 01:10 AM)QUOTE (S...   Sep 23 2003, 06:34
- - ff123   QUOTE (phong @ Sep 22 2003, 09:10 PM)Can anyo...   Sep 23 2003, 06:35
- - [proxima]   QUOTE (phong @ Sep 23 2003, 06:10 AM)Can anyo...   Sep 23 2003, 09:48
- - joey_m   Ditto with WMA... I rated it even better than LAME...   Sep 23 2003, 15:58
- - vinnie97   If you can easily detect upper-range frequencies, ...   Sep 23 2003, 17:01
- - rjamorim   QUOTE (vinnie97 @ Sep 23 2003, 01:01 PM)Rober...   Sep 23 2003, 17:51
- - [proxima]   QUOTE (rjamorim @ Sep 23 2003, 05:51 PM)You s...   Sep 23 2003, 18:07
- - Volcano   Just wanted to say... great work as usual, Roberto...   Sep 23 2003, 18:12
- - rjamorim   QUOTE ([proxima),Sep 23 2003, 02:07 PM] I...   Sep 23 2003, 18:29
- - [proxima]   Roberto, these sort of mistakes clearly indicate ...   Sep 23 2003, 19:22
- - Latexxx   QUOTE (joey_m @ Sep 23 2003, 06:58 AM)Ditto w...   Sep 23 2003, 19:54
- - rjamorim   Hello. I just uploaded the bitrate tables. They a...   Sep 23 2003, 20:12
- - phong   Thanks everyone for the comments on WMA, that...   Sep 23 2003, 20:28
- - spoon   I am thinking that certain manufacturer claims of ...   Sep 23 2003, 22:36
- - XXX   It's always a mistake to scale a chart that na...   Sep 23 2003, 23:00
- - Dibrom   QUOTE (rjamorim @ Sep 23 2003, 12:12 PM)Hello...   Sep 23 2003, 23:06
- - Dibrom   QUOTE (spoon @ Sep 23 2003, 02:36 PM)I am thi...   Sep 23 2003, 23:09
- - Jon Ingram   You mention in the blurb that it's interesting...   Sep 23 2003, 23:13
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