You know it's good; I know it's good. I'm talking about Vorbis at 128 as it currently is in CVS. Please participate in a group listening test of various formats to show how Vorbis 128 has improved since RC2. I have prepared three sample music clips comparing Liquid AAC, MPC, pre-RC3 Vorbis, Lame, Xing, and WMA8, similar to the first test. Except I believe that this time Vorbis will rank up near the top. http://ff123.net/128test/instruct.html ff123 --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'vorbis-request@xiph.org' containing only the word 'unsubscribe' in the body. No subject is needed. Unsubscribe messages sent to the list will be ignored/filtered.
On a similar note, do all favours of ogg vorbis still cut the top end of the frequency spectrum? Thats currently the only thing i don't like about the format. Or is it just my encoder/decoder/plugin? Matt --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'vorbis-request@xiph.org' containing only the word 'unsubscribe' in the body. No subject is needed. Unsubscribe messages sent to the list will be ignored/filtered.
I wrote:>You know it's good; I know it's good. I'm talking about Vorbis at 128 as >it currently is in CVS. Please participate in a group listening test of >various formats to show how Vorbis 128 has improved since RC2. I have >prepared three sample music clips comparing Liquid AAC, MPC, pre-RC3 >Vorbis, Lame, Xing, and WMA8, similar to the first test. Except I believe >that this time Vorbis will rank up near the top. > >http://ff123.net/128test/instruct.htmlJust in case I didn't give a good enough reason to lend your ears: this community has a chance to assert itself first in a quality discussion (when RC3 is released) instead of letting others such as the Washington Post or slashdot sense a vacuum and attempt to fill it (with less than optimal results). ff123 --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'vorbis-request@xiph.org' containing only the word 'unsubscribe' in the body. No subject is needed. Unsubscribe messages sent to the list will be ignored/filtered.
Do you guys take the comments of Microsoft in consideration (eg that the
comparison is apples and peares instead of apples and apples?. I got flamed
severly for stating my interest in Open Source (OGG) and my anti-DMCA
stance...so you're warned :) Keep up the good work by the way :)
Regards,
Mark
--
Mark de Bokx
Internet Service Engineer
ICT Communication and Media Services
PlanetMediaGroup
the Netherlands
"If you think education is expensive, try ignorance."
-- Derek Bok, president of Harvard
-----Original Message-----
From: ff123 [mailto:miyaguch@eskimo.com]
Sent: Wednesday, October 31, 2001 4:15 PM
To: vorbis@xiph.org
Subject: Re: [vorbis] Participate in listening tests
Moritz wrote:
>In order to do it right, I will need quite some time. When is the
>deadline? I think I missed that one on your website, or overread it.
There is no deadline. The tests can run indefinitely unless answers or
comments leak out. I will periodically release statistical results, but
the comments on the sound will remain undisclosed until the tests are
closed.
So here are some statistical results for wayitis.wav. There are very few
listeners at this point, and the type of analysis makes some assumptions
which may not be warranted, so I'd interpret these results as being a
suggestion of what the final results might look like rather than swallowing
it whole without qualification.
FRIEDMAN version 1.21 (Oct 16, 2001) http://ff123.net/
Blocked ANOVA analysis
Number of listeners: 7
Critical significance: 0.05
Significance of data: 4.02E-02 (significant)
---------------------------------------------------------------
ANOVA Table for Randomized Block Designs Using Ratings
Source of Degrees Sum of Mean
variation of Freedom squares Square F p
Total 41 54.00
Testers (blocks) 6 30.85
Codecs eval'd 5 7.16 1.43 2.69 4.02E-02
Error 30 15.99 0.53
---------------------------------------------------------------
Fisher's protected LSD for ANOVA: 0.797
ogg aac lame wma8 xing
mpc 0.11 0.40 0.43 1.00* 1.10*
ogg 0.29 0.31 0.89* 0.99*
aac 0.03 0.60 0.70
lame 0.57 0.67
wma8 0.10
mpc ogg aac lame wma8 xing
4.56 4.44 4.16 4.13 3.56 3.46
mpc is better than wma8, xing
ogg is better than wma8, xing
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Regarding the listening test... Do I just suck or am I using bad equipment? I can't hear any difference at all among any of the fossile or rawhide samples. I *am* limited to either very cheap headphones ($20) or a pretty cheap stereo at low volume though. But still, you'd think I should be able to hear a difference. I got top scores on my last hearing inspection :) But seriosly; do you guys actually find any of those samples bad enough that they're "annoying"? Am I the only one who doesn't detect a difference? -- / Peter Schuller, InfiDyne Technologies HB PGP userID: 0xE9758B7D or 'Peter Schuller <peter.schuller@infidyne.com>' Key retrival: Send an E-Mail to getpgpkey@scode.org E-Mail: peter.schuller@infidyne.com Web: http://www.scode.org --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'vorbis-request@xiph.org' containing only the word 'unsubscribe' in the body. No subject is needed. Unsubscribe messages sent to the list will be ignored/filtered.