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Topic: Opus 1.3.1 (Read 46479 times) previous topic - next topic
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Re: Opus 1.3.1

Reply #76
John at rarewares has just uploaded 32 bit and 64 bit compiles of Opus 1.3.1

https://rarewares.org/opus.php
I'm using that one and get abysmal results. Wondering is something is wrong. On long sawwave kind of pads/drones, it is kind of ducking/oscillating. Will show samples tomorrow as I'm still wondering if there's something wrong in my side. It's on fb2k convert "--quiet --bitrate 128 --vbr --music - %d" - I hear easily audible and annoying loudness instability, as in ducking, as popular in IDM, all over the place. EDIT: It's not in the opus->wav convert. Good, so it must be something wrong in the fb2k decoding process.


Re: Opus 1.3.1

Reply #78
I'm using that one and get abysmal results. Wondering is something is wrong. On long sawwave kind of pads/drones, it is kind of ducking/oscillating. Will show samples tomorrow as I'm still wondering if there's something wrong in my side. It's on fb2k convert "--quiet --bitrate 128 --vbr --music - %d" - I hear easily audible and annoying loudness instability, as in ducking, as popular in IDM, all over the place. EDIT: It's not in the opus->wav convert. Good, so it must be something wrong in the fb2k decoding process.
Would be appreciated if you could share a sample file that plays incorrectly in foobar2000 yet decodes correctly using Opus tools.
Thanks.
Microsoft Windows: We can't script here, this is bat country.

Re: Opus 1.3.1

Reply #79
Would be appreciated if you could share a sample file that plays incorrectly in foobar2000 yet decodes correctly using Opus tools.
Will do tomorrow, I'm definitely interested in what exactly was going on here.


 

Re: Opus 1.3.1

Reply #81
John at rarewares has just uploaded 32 bit and 64 bit compiles of Opus 1.3.1

https://rarewares.org/opus.php
I'm using that one and get abysmal results. Wondering is something is wrong. On long sawwave kind of pads/drones, it is kind of ducking/oscillating. Will show samples tomorrow as I'm still wondering if there's something wrong in my side. It's on fb2k convert "--quiet --bitrate 128 --vbr --music - %d" - I hear easily audible and annoying loudness instability, as in ducking, as popular in IDM, all over the place. EDIT: It's not in the opus->wav convert. Good, so it must be something wrong in the fb2k decoding process.

Out of interest did you try the netranger compile? The rarewares compiles seem to be alot bigger then other builds I've seen so wondered if any difference in sound quality.


Re: Opus 1.3.1

Reply #83
The rarewares compiles seem to be alot bigger then other builds I've seen so wondered if any difference in sound quality.
There are many possible reasons a compile of the same code can be larger. For example
- Duplicating functions optimized for different CPUs
- Including debugging symbols
- Including (part of) the C runtime
- Including optional code/features

For example, flac compiled with minGW can be around 1400kb while compiled with Visual Studio it is only 300kb. This difference is because of the first three reasons mentions above.

These reasons seem a far more likely explanation than anything that has to do with quality of the output.
Music: sounds arranged such that they construct feelings.

Re: Opus 1.3.1

Reply #84
General question out of interest, and as I'm not really into Opus: Is the codec "actively" developed on the psychoacustic level (Ie I do not mean improvements in tag handling etc...) or rather... "set"? Because it's 3 years now... Thx guys
With "active" I mean..., e.g., see TAK lossless. Nobody uses it except some very few people, but it's always improved.

Re: Opus 1.3.1

Reply #85
Is the codec "actively" developed on the psychoacustic level (Ie I do not mean improvements in tag handling etc...) or rather... "set"? Because it's 3 years now...
You kind of answered your own question. Do you consider a period of three years since the last quality improvement to mean that Opus is no longer meaningfully improved? It sounds like you do.

Re: Opus 1.3.1

Reply #86
Do you consider a period of three years since the last quality improvement to mean that Opus is no longer meaningfully improved? It sounds like you do.
I was off the audio scene. So I asked. Three years mean nothing, it's just an amount of years. "Quite a few people are often tuning the codec enthusiastically" is a possibility, but also "there is one guy, now he works for a big corp, we haven't heard of him for 2 years".

Re: Opus 1.3.1

Reply #87
Is the codec "actively" developed on the psychoacustic level (Ie I do not mean improvements in tag handling etc...) or rather... "set"? Because it's 3 years now...
You kind of answered your own question. Do you consider a period of three years since the last quality improvement to mean that Opus is no longer meaningfully improved? It sounds like you do.
"Opus development finished", said IgorC.

https://hydrogenaud.io/index.php/topic,120007.msg997568.html#msg997568

Re: Opus 1.3.1

Reply #88
"Opus development finished", said IgorC.

Too bad that one have to type:

opusenc file.wav file.opus

instead like with oggenc, simply:

oggenc *

It force to write a bash script to encode multiple files  :(


Re: Opus 1.3.1

Reply #89
"Opus development finished", said IgorC.

Too bad that one have to type:

opusenc file.wav file.opus

instead like with oggenc, simply:

oggenc *

It force to write a bash script to encode multiple files  :(



You can use foobar2000 to make encoding much, much easier. If you are using linux, it works under wine very well. ;)
lame --abr 288 -f --lowpass 17 (+ mp3gain@92 dB)


Re: Opus 1.3.1

Reply #91
Is the codec "actively" developed on the psychoacustic level (Ie I do not mean improvements in tag handling etc...) or rather... "set"? Because it's 3 years now...
You kind of answered your own question. Do you consider a period of three years since the last quality improvement to mean that Opus is no longer meaningfully improved? It sounds like you do.
"Opus development finished", said IgorC.

https://hydrogenaud.io/index.php/topic,120007.msg997568.html#msg997568
Since xiph.org foundation released the latest Opus version 1.3.1, they are experimenting to increase encoding efficiency, about 30% bitrate reduction with the same speech and sound quality.
The compatibility of the old existing playback applications is maintained.

have a look there.

sheets:
https://arxiv.org/pdf/1905.04628v1.pdf

Repositories, branches:
https://github.com/xiph/LPCNet
https://gitlab.xiph.org/xiph/opus/-/tree/exp_neural_fec2
https://gitlab.xiph.org/xiph/opus/-/tree/neural_plc
https://gitlab.xiph.org/xiph/opus/-/tree/exp_plc_hack4


Re: Opus 1.3.1

Reply #93
There sure have been changes: https://github.com/xiph/opus/commits/master

3 commits fixing stuff users aren't worried with, so that last build can still be considered up-to-date
Music: sounds arranged such that they construct feelings.