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Discussion related to multiple format tests' resul, Split from AAC @ 128kbps listening test
duartix
post Feb 11 2004, 20:42
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Split from here. This topic has been discussed to death in the threads related to the multiformat listening tests.
If you want to add something here, re-read these threads first. Only post here if you have something new to say, please
- tigre

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There is something else that I think would give all codecs a fairer chance. Even though using VBR whenever possible it would be helpfull trying to achieve similar filesizes.
(I remember the multiformat 128kpbs test where Musepack was a winner but at the expense of files 11,7% larger than the close second QT AAC.)

This post has been edited by tigre: Feb 12 2004, 21:06
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duartix
post Feb 12 2004, 20:31
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QUOTE
ARGH!! The Musepack files were only 11.whatever percent larger for those samples because those samples were mainly problem samples, so MPC, like any good VBR codec would, allocated more bits than usual! Over a large number of files MPC *at that --quality value* would average 128kbit/s. Do you understand??

@ music_man_mpc:

Even though my post count may cause you to think otherwise, I'm very familiar with the VBR concept (I've been encoding MPEG4 video since the times of the first Nandub SBC releases). So I will thank you immediately for not regarding my posts as noobarrhea. tongue.gif
Perhaps I'm not so familiar with which audio codecs support VBR. I assumed Quicktime AAC, WMApro & Blade were CBR. But even though I always encode at CQ (constant quality), so always VBR, I guess it's very important for me to know that even though as you correctly have put it:

QUOTE
those samples were mainly problem samples

they were also problem samples for QuicktimeAAC, not just for MPC, BUT it still managed to achieve closely the same quality (overall), even though it used a lower bitrate.

My point is that the day such a codec like Quicktime AAC implements CQ (VBR) encoding, it will use a lower bitrate to achieve the same quality. Clear?
This is a 128kbps test for sound quality, right? So let's isolate the bitrate and test for quality! cool.gif
Otherwise we'll all be encoding at --braindead because we don't need these tiresome ABX tests...

This post has been edited by duartix: Feb 12 2004, 20:38
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Posts in this topic
- duartix   Discussion related to multiple format tests' resul   Feb 11 2004, 20:42
- - schnofler   QUOTE (duartix)I remember the multiformat 128kpbs ...   Feb 11 2004, 21:49
- - music_man_mpc   QUOTE (duartix @ Feb 11 2004, 11:42 AM)There ...   Feb 11 2004, 22:02
- - rjamorim   QUOTE (schnofler @ Feb 11 2004, 06:49 PM)Good...   Feb 11 2004, 22:22
- - Continuum   Yes, but then the set is not chosen optimally (bal...   Feb 11 2004, 22:31
- - music_man_mpc   QUOTE (Continuum @ Feb 11 2004, 01:31 PM)I...   Feb 12 2004, 17:01
- - duartix   QUOTE ARGH!! The Musepack files were only ...   Feb 12 2004, 20:31
- - music_man_mpc   QUOTE (duartix @ Feb 12 2004, 11:31 AM)My poi...   Feb 12 2004, 20:46
- - duartix   It means that even though we are not as restricted...   Feb 12 2004, 20:52
- - Continuum   QUOTE (music_man_mpc @ Feb 12 2004, 05:01 PM)...   Feb 12 2004, 22:55
- - rjamorim   QUOTE (Continuum @ Feb 12 2004, 07:55 PM)Sadl...   Feb 12 2004, 23:41
- - guruboolez   QUOTE (Continuum @ Feb 12 2004, 10:55 PM)I di...   Feb 14 2004, 21:22
- - Continuum   QUOTE (guruboolez @ Feb 14 2004, 09:22 PM)I t...   Feb 14 2004, 21:52
- - guruboolez   QUOTE (Continuum @ Feb 14 2004, 09:52 PM)Mayb...   Feb 14 2004, 22:05
- - Continuum   I thought that's how it has been done? The ave...   Feb 14 2004, 22:13
- - rjamorim   QUOTE (Continuum @ Feb 14 2004, 07:13 PM)Mayb...   Feb 14 2004, 22:23
- - guruboolez   QUOTE (Continuum @ Feb 14 2004, 10:13 PM)My p...   Feb 14 2004, 22:28
- - rjamorim   QUOTE (guruboolez @ Feb 14 2004, 07:28 PM)I...   Feb 14 2004, 22:36
- - guruboolez   I like this sample Did you try this another pian...   Feb 14 2004, 22:45
- - spoon   With Roberto's permission I am running backgro...   Feb 15 2004, 00:19
- - rjamorim   Yes, thank-you very much, Spoon   Feb 15 2004, 00:20


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