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New opus test build
NullC
post Apr 16 2013, 23:31
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I've posted up a new win32 build of libopus git master: https://people.xiph.org/~greg/opus-tools_exp_a8783a1.zip

There aren't many major changes from the prior alpha but a number of small bugs fix, some of which impact quality. I think we're particular interested in knowing about any quality regressions vs prior versions and particular cases where the speech/music detection get confused. (For the actual release we'll likely back that detector off at high rates but for now it's set more aggressively in order to find problems)
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ChristianK
post Jun 17 2013, 21:22
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QUOTE (jmvalin @ Jun 17 2013, 20:25) *
Where your_value should be between 0 and 16384 where 0 mean "collapse to mono" and 16384 means "keep stereo without width reduction".

If you can figure out the optimal width for several bit-rates, I can change the code to reflect that.

Tried it out and it works just like you said.
I'll try to find some time to play with that number and see if I figure out what sounds best.
A quick test suggests that it could be lowered a bit.

One quick question: does or could it hurt that I decode these newer files with libopus 1.0.2 through gstreamer or should I use the new opusdec?
(I've made the git compiled version portable in order to easily compare side by side.)
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jmvalin
post Jun 18 2013, 00:23
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QUOTE (ChristianK @ Jun 17 2013, 16:22) *
One quick question: does or could it hurt that I decode these newer files with libopus 1.0.2 through gstreamer or should I use the new opusdec?
(I've made the git compiled version portable in order to easily compare side by side.)


You can decode with any version of the decoder. The Opus format is frozen and any change we make is just encoder-side improvements.
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ChristianK
post Jun 30 2013, 20:50
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QUOTE (jmvalin @ Jun 18 2013, 01:23) *
You can decode with any version of the decoder. The Opus format is frozen and any change we make is just encoder-side improvements.

Good, I was under that impression but it couldn't hurt to ask.
I have to excuse for the fact that I have not come up with any real results yet, I've been quite busy and it is actually a lot harder than I initially thought.
I've tried a lot of encodes to point that it almost drove me mad and I think that around a bitrate of 42 Kbps music does sound a little bit better with just a bit more stereo.
Lower than that (<40) currently doesn't seem favourable because it makes the sound crackle more.
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Posts in this topic
- NullC   New opus test build   Apr 16 2013, 23:31
- - Dynamic   I was trying to test the speech/music detection, b...   Apr 17 2013, 19:32
|- - jmvalin   QUOTE (Dynamic @ Apr 17 2013, 14:32) I wa...   Apr 17 2013, 21:13
- - Gainless   Good to see the Muse Breaks fix finally bundled. B...   Apr 17 2013, 20:32
|- - jmvalin   QUOTE (Gainless @ Apr 17 2013, 15:32) Goo...   Apr 17 2013, 21:13
|- - Gainless   QUOTE (jmvalin @ Apr 17 2013, 22:13) I th...   Apr 19 2013, 14:57
- - CoRoNe   Using this test build (libopus 1.1a-67) to encode ...   Apr 18 2013, 20:27
- - Gainless   Forgot to add this one: Probably the worst of the...   Apr 20 2013, 10:52
- - IgorC   Gainless, Can You provide some ABC/HR logs compar...   Apr 20 2013, 16:14
|- - Gainless   QUOTE (IgorC @ Apr 20 2013, 17:14) Gainle...   Apr 21 2013, 10:33
- - IgorC   Here are some results for 96 kbps 1.0.2 https://f...   Apr 21 2013, 02:32
- - Kamedo2   I visualized IgorC's precious results on the p...   Apr 21 2013, 03:17
- - IgorC   Thank You, Kamedo2. I was thinking to add it but h...   Apr 21 2013, 04:00
- - Gainless   Ok, I've done ABC-HR tests with the samples at...   Apr 21 2013, 15:18
- - IgorC   There are two first samples (01 and 05) those have...   Apr 25 2013, 05:39
- - Gainless   What I don't really get, is why Opus's VBR...   Apr 25 2013, 10:41
|- - jmvalin   QUOTE (Gainless @ Apr 25 2013, 05:41) Wha...   Apr 25 2013, 13:06
|- - Gainless   QUOTE (jmvalin @ Apr 25 2013, 14:06) That...   Apr 25 2013, 14:00
|- - jmvalin   QUOTE (Gainless @ Apr 25 2013, 09:00) Can...   Apr 25 2013, 16:45
|- - Gainless   QUOTE (jmvalin @ Apr 25 2013, 17:45) Depe...   Apr 25 2013, 21:27
- - IgorC   Gainless, Some time ago You have submited one sam...   Apr 25 2013, 21:56
|- - Gainless   QUOTE (IgorC @ Apr 25 2013, 22:56) Gainle...   Apr 25 2013, 22:11
- - IgorC   Yes, it was Project 100 Sample. http://www.hydrog...   Apr 27 2013, 19:35
- - Gainless   Ok, then this is at least clear. What's probab...   Apr 27 2013, 21:11
- - IgorC   Have tried "Iron Man" sample with the ex...   May 11 2013, 19:26
- - Gainless   Igor, you may also take this sample into considera...   May 12 2013, 12:26
- - IgorC   Gainless, Yes, 1.0.2 was better than the experi...   May 12 2013, 21:42
- - Gainless   Maybe some framesize otpimation/detector can be do...   May 13 2013, 20:33
|- - jmvalin   QUOTE (Gainless @ May 13 2013, 15:33) Btw...   May 14 2013, 04:52
|- - Gainless   Sorry^1000 to Jmvalin and Igor, was my fault with ...   May 14 2013, 08:10
- - Gainless   Here's another sample that could benefit from ...   May 23 2013, 17:15
|- - jmvalin   QUOTE (Gainless @ May 23 2013, 12:15) Her...   May 24 2013, 08:43
|- - Gainless   QUOTE (jmvalin @ May 24 2013, 09:43) QUOT...   Jun 2 2013, 21:41
- - ChristianK   Hi, is this the place to also discus the latest ve...   Jun 14 2013, 19:02
- - ChristianK   Well, I'll just go ahead and post my question ...   Jun 16 2013, 22:02
|- - jmvalin   QUOTE (ChristianK @ Jun 16 2013, 17:02) I...   Jun 16 2013, 22:16
- - ChristianK   Yes, I'm curious on how to control the stereo....   Jun 17 2013, 19:10
|- - jmvalin   QUOTE (ChristianK @ Jun 17 2013, 14:10) Y...   Jun 17 2013, 19:25
|- - kabal4e   QUOTE You should replace the second line simply wi...   Jun 18 2013, 23:06
- - ChristianK   QUOTE (jmvalin @ Jun 17 2013, 20:25) Wher...   Jun 17 2013, 21:22
|- - jmvalin   QUOTE (ChristianK @ Jun 17 2013, 16:22) O...   Jun 18 2013, 00:23
|- - ChristianK   QUOTE (jmvalin @ Jun 18 2013, 01:23) You ...   Jun 30 2013, 20:50
- - Bostedclog   Could you tell me which opus encoder we should be ...   Jun 25 2013, 18:00
- - IgorC   Previously I gave a try to new temporal VBR at 48...   Jul 1 2013, 04:40
- - Gainless   A question: Does the tonality detector inside Opus...   Jul 4 2013, 15:03


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