Old 09-10-2016, 02:02 AM   #1
jm duchenne
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Default Elastique - noise with multichannel files

Hi,

If the files' channels number is 49 or more, every timestretching or pitch with one of the Elastic algorithms results of only high pitch noise at high level (or nothing at all).
It is 100% reproducible on all versions I have tested.

The problem does not occur with up to 48 channels or with the other algorithms.

Last edited by jm duchenne; 10-08-2016 at 04:38 AM.
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Old 10-08-2016, 04:35 AM   #2
jm duchenne
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Hello,

Could you take some time to look at this bug ?
I know that it will not worry a lot of people, but it is a bug nevertheless, and it annoys me at least ;-)

By the way, it happends all the same in the macOS version.

Thanks in advance !
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Old 11-17-2016, 10:01 AM   #3
jm duchenne
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Hello again,

How could I know that this bug report has been seen by the devs and that there is some chance that it will be solved ?
Or could you tell me if it is not possible ?

I understand that I am perhaps the only one that has a problem with it, but I am stucked in some projects since I have reported it...
Thanks.
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Old 11-17-2016, 01:16 PM   #4
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Maybe it's a limitation in the Zplane algorithm. The Reaper developers could then only do some hack to work around that, I guess.
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Old 11-17-2016, 01:43 PM   #5
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Yes, maybe ?

Thus it would be nice to know ;-)
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Old 12-13-2016, 01:32 AM   #6
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Hi, Justin and C°, could you just tell if :
1. you have read this BR
2. you can confirm the reported behaviour or I make some mistake
3. it doesn't depend on Cockos devs
4. you will look later
5. other...

Thanks anyway !

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Old 12-13-2016, 03:24 AM   #7
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Quote:
Originally Posted by jm duchenne View Post
Hi...
Did you read this? http://forum.cockos.com/showthread.php?t=36653
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Quote:
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Make a thread "F%#! you Reaper! I quit!" to get more views and feedback since these kind of threads get much more traction
SoundCloudFR: True Non-destructive GLUEAll the REAPER names
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Old 12-13-2016, 04:07 AM   #8
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Yes, thanks.
But I thought that I had given all the necessary clues, since it is very simple and always reproducible, in all platforms, when set as described.
I don't know what I could give more... but I can try ;-)

So, a more detailed description :
- conditions : multichannel audio files with 49 channels and more
- action : change pitch only or time with constant pitch (timestretch)
- selected algorithm : Elastic all versions
- result : high level and pitch noise burst (can be more than +100 db), OR silence, OR other kinds of noise/silence balance, more or less random ?
- no crash, no error
- no problem if there is no pitch change (speed only)
- no problem with Soundtouch and Windowed algorithms
- no problem with files with up to 48 channels
- computers / OS : Windows 7/10, MacOS 9/10, various processors from Atom to Core i7
- Reaper version : 5x (not tried with 4)
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