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Opus 1.1 alpha version (not BABYEATER), [split from the good old megathread]
IgorC
post Feb 10 2013, 02:00
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If somebody hasn't seen there is an official Opus 1.1 alpha.

https://ftp.mozilla.org/pub/mozilla.org/opu...alpha-win32.zip

Also some kinda settings to play with
https://wiki.xiph.org/Opus_tuning
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Banned
post Feb 14 2013, 07:19
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And what are these graphs supposed to show? Why do you even think this is a bug?

Edit: I propose that new posts in this thread which do not continue existing discussion here be split off, as Opus has it own subforum.

This post has been edited by Banned: Feb 14 2013, 07:45
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softrunner
post Feb 14 2013, 09:15
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QUOTE (Banned @ Feb 14 2013, 10:19) *
And what are these graphs supposed to show? Why do you even think this is a bug?

Signal should be constant, as source. First spectrogram demonstrates growing frequency cutoff, and second - dramatic signal change at the beginning of the sample.
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saratoga
post Feb 14 2013, 20:16
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QUOTE (softrunner @ Feb 14 2013, 03:15) *
QUOTE (Banned @ Feb 14 2013, 10:19) *
And what are these graphs supposed to show? Why do you even think this is a bug?

Signal should be constant, as source. First spectrogram demonstrates growing frequency cutoff, and second - dramatic signal change at the beginning of the sample.


Spectrograms are basically meaningless for looking at lossy audio.
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db1989
post Feb 14 2013, 20:25
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QUOTE (saratoga @ Feb 14 2013, 19:16) *
QUOTE (softrunner @ Feb 14 2013, 03:15) *
QUOTE (Banned @ Feb 14 2013, 10:19) *
And what are these graphs supposed to show? Why do you even think this is a bug?
Signal should be constant, as source. First spectrogram demonstrates growing frequency cutoff, and second - dramatic signal change at the beginning of the sample.

Spectrograms are basically meaningless for looking at lossy audio.

This, and the Terms of Service make it clear that we’re not interested in assessing perceptual encoders visually.

It’s a paradoxical thing to do: it’s their purpose to do whatever they want to the signal in order to compress it as well as possible with the lowest probability of us noticing, so in a way, you should welcome visual differences, or at least not care about them until they’re reflected in what you hear.
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Posts in this topic
- IgorC   Opus 1.1 alpha version (not BABYEATER)   Feb 10 2013, 02:00
- - Seren   QUOTE (IgorC @ Feb 10 2013, 09:00) If som...   Feb 10 2013, 10:53
- - moosehunter   I compiled opus-tools with libopus 1.1-alpha using...   Feb 13 2013, 04:54
- - LithosZA   QUOTE I compiled opus-tools with libopus 1.1-alpha...   Feb 13 2013, 06:39
- - Jplus   Since eig is known to be a hard sample it shouldn...   Feb 13 2013, 10:05
- - Banned   And what are these graphs supposed to show? Why do...   Feb 14 2013, 07:19
|- - softrunner   QUOTE (Banned @ Feb 14 2013, 10:19) And w...   Feb 14 2013, 09:15
|- - saratoga   QUOTE (softrunner @ Feb 14 2013, 03:15) Q...   Feb 14 2013, 20:16
|- - db1989   QUOTE (saratoga @ Feb 14 2013, 19:16) QUO...   Feb 14 2013, 20:25
- - jensend   Plenty of people ready to ream the guy with knee-j...   Feb 15 2013, 00:02
|- - db1989   QUOTE (jensend @ Feb 14 2013, 23:02) Plen...   Feb 15 2013, 16:39
- - softrunner   QUOTE (saratoga @ Feb 14 2013, 23:16) Spe...   Feb 16 2013, 02:11
|- - db1989   QUOTE (softrunner @ Feb 16 2013, 01:11) D...   Feb 16 2013, 03:48
- - IgorC   After performing some blind tests on Opus 1.1a and...   Feb 23 2013, 19:12
- - CoRoNe   Although I'm no expert in detecting audible di...   Feb 23 2013, 23:06
- - CoRoNe   I didn't think my post would fit in either of ...   Feb 23 2013, 23:51
- - IgorC   A single result for sample http://www.rarewares.or...   Mar 14 2013, 03:14
|- - jmvalin   QUOTE (IgorC @ Mar 13 2013, 22:14) A sing...   Mar 14 2013, 21:41
- - mzso   Is it normal to get weird gap/crackly artifacts at...   Mar 14 2013, 20:32
|- - IgorC   QUOTE (mzso @ Mar 14 2013, 16:32) Is it n...   Mar 15 2013, 03:59
|- - mzso   QUOTE (IgorC @ Mar 15 2013, 04:59) QUOTE ...   Mar 15 2013, 09:45
- - IgorC   The noise is constant during the whole tonal part ...   Mar 15 2013, 03:37
|- - jmvalin   QUOTE (IgorC @ Mar 14 2013, 22:37) The no...   Mar 16 2013, 00:37
- - IgorC   OK. And yes, You're right. This isn't a ...   Mar 16 2013, 02:28
|- - jmvalin   QUOTE (IgorC @ Mar 15 2013, 21:28) Also t...   Mar 16 2013, 02:50
- - IgorC   It behaves exactly the same. Both beginnings have ...   Mar 16 2013, 03:05
|- - jmvalin   QUOTE (IgorC @ Mar 15 2013, 22:05) It beh...   Mar 16 2013, 03:35
- - IgorC   No hurry at all. If it will be improved at some po...   Mar 16 2013, 03:56
- - darkbyte   I wonder if there's any new builds we can try....   Apr 1 2013, 18:10
|- - lithoc   QUOTE (darkbyte @ Apr 2 2013, 01:10) I wo...   Apr 2 2013, 06:33
- - eahm   Every codec knows how to trick our earing, don...   Apr 2 2013, 06:42
- - wswartzendruber   I'm sitting here telling myself that Google Mu...   Apr 6 2013, 03:46
- - Mach-X   Coffee. Oh and as long as Starbucks coffee exists,...   Apr 6 2013, 04:20
- - softrunner   As I wrote before, Opus 1.1 alpha has some bugs, t...   Apr 7 2013, 23:11
|- - saratoga   QUOTE (softrunner @ Apr 7 2013, 17:11) Wh...   Apr 7 2013, 23:15
|- - jmvalin   QUOTE (softrunner @ Apr 7 2013, 18:11) Fo...   Apr 8 2013, 03:01
- - softrunner   QUOTE (saratoga @ Apr 8 2013, 02:15) Sure...   Apr 7 2013, 23:19
|- - saratoga   QUOTE (softrunner @ Apr 7 2013, 17:19) QU...   Apr 8 2013, 00:35
- - Gainless   Ok, so here's another ABXable issue with tonal...   Apr 8 2013, 20:36
- - Gainless   I've played a bit around with different frames...   May 6 2013, 17:13


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