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Old 10-08-2017, 08:56 AM   #1
juliansader
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Default Take volume envelope is out of sync by one sample

When doing sample-level editing using automation envelopes, the take volume envelope is out of sync by one sample:



The track volume and pre-FX volume envelopes work fine.

(REAPER v5.50)
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File Type: png Take volume envelope out of sync by one sample.png (11.1 KB, 392 views)
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Old 10-08-2017, 10:06 AM   #2
mpl
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I doubt envelopes works at sample level.
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Old 10-08-2017, 10:38 AM   #3
juliansader
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I am not familiar with sample-level editing, so I may be wrong, but thus far it seems to work. For example, here is a short snippet before and after rendering:

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File Type: png Sample-level editing.png (16.0 KB, 357 views)

Last edited by juliansader; 10-08-2017 at 10:45 AM.
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Old 10-08-2017, 10:51 AM   #4
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Yes, afaik volume and pan envelopes work at sample level but not plugin envelopes (unless VST3 and sample accurate automation is implemented in the plugin).
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Old 10-09-2017, 01:28 PM   #5
Klangfarben
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If track volume and pan envelopes work at sample level, shouldn't take volume envelopes as well? Seems like a bug to me.
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Old 10-09-2017, 01:36 PM   #6
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Works here. Some combination of sample rate and possibly tempo (if envelopes are beat-based) may be causing a half-sample rounding error in your case.




.. er, I should say, the render appears to be correct to the exact sample. The preview display is off by one sample -- in the first take, the sample before the muted one is displayed with zero volume. That seems to be the case in your screenshot as well.
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Old 03-17-2018, 03:20 PM   #7
juliansader
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This display bug is still alive in v5.77 (in volume and other take envelopes such as pitch):

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Old 09-23-2020, 12:09 PM   #8
juliansader
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Three year bump for this bug.

REAPER v6.13.
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