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Improving the compressor and env follower accuracy?

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Systematic
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Unread post by Systematic » 19 Dec 2010, 11:29

Was just wondering, is there a quick and easy way to improve Usine's accuracy? I notice that when i assign the audio envelope follower to a parameter, it sounds very random and not accurate.
I mean, if you loop the song over a bar, and let it play, the envelope follower never sounds the same on each pass. Even when the follower has minimum attack/release, it still sounds inconsistent. I have the same problem with the drawable compressor.
I thought it might be a problem in some settings, but i tried adjusting latency and other things, but the problem remains.

I have many other plugins with envelope followers, and they are perfectly accurate, so is there an option that you think is most likely to fix this problem?

Thanks.

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nay-seven
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Unread post by nay-seven » 19 Dec 2010, 11:53

mm, strange
have you tried to link 2 oscilloscope:
one from the audio source out
and one from the envelope follower module out

just tried here with a sampler and the piano note sample, no difference each time..

Systematic
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Unread post by Systematic » 19 Dec 2010, 12:36

You mean an oscilloscope built in to usine, or a 3rd party plugin? Well no, i haven't analyzed the situation in any way. I just noticed that both the envelope follower and custom-draw compressor both had problems, so i decided not to risk using usine for these things.
But those were the main reasons i was interested in usine, so i was hoping i just set something up wrong.

I only want to use it as a vst plugin, so i don't want to be tweaking lots of different settings just to get a stable envelope follower.
I might try the oscilloscope sometime, if i have the time, and tell you the result, but if you can't think of why this is happening, then maybe usine just isn't a good option for a vst plugin on my computer.

ps: the compressor is only slightly inaccurate. I notice it mainly on the attack, with heavy compression, but the follower is unusable.

23fx23
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Unread post by 23fx23 » 19 Dec 2010, 13:00

reducing bloc size in preferences to 32 samples will improve the time rounding that could occur and being noticeable
if on 128s default value. at 128s, you get a 3ms precision, at 32 you get 0.7 ms precision.
in vst version i think you should try Vst buffer of 0samples and blocsize of 32, then close and reopen the project.

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nay-seven
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Unread post by nay-seven » 19 Dec 2010, 19:58

And here how i 've check :
Image

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senso
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Unread post by senso » 20 Dec 2010, 10:10

it's the drawback of 'BLOC calculation' in all modular soft.
Conceptually we can't do any thing but as 23FX said, reduce the bloc size to 32.
set the setup/asio/refresh speed can also improve accuracy.

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