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Re: MIDI timing accuracy test for S1 - try this!

Posted: Fri Jul 17, 2020 7:39 pm
by robertgray3
kassra wroteso just wondering, if working on a mac, does the jitter show up when transforming (or freezing) midi tracks/virtual instruments to audio? does it matter what your buffer setting is when you freeze to audio? if i freeze at 2048 (as opposed to 32 or 64), will my resulting audio track suffer from this timing problem?


Nope, only with monitoring.

Re: MIDI timing accuracy test for S1 - try this!

Posted: Fri Jul 17, 2020 10:02 pm
by robertgray3
niles wroteIf you are able to make the same movie again I can do the same for Windows and we can clearly show the difference side-by-side. If possible you can show the deviations extremes in the scope by clicking once on the lowest latency and move to the highest (approximately). It may give the developers a better idea of what they are looking at.


Done. The tooltip is small in the video but it shows that at 512 it deviates about 10.53ms total.

Results in the ZIP file to compare audio and midi, video attached to this post.

@roland1 @Rasi @musicchamber since you guys were vocal about having issues with this it might be helpful for you to run niles' test since it's so well packaged and easily quantifiable.



Easy_Buffer_Jitter_Test_5 RG-test.zip
(2.24 MiB) Downloaded 13 times

Re: MIDI timing accuracy test for S1 - try this!

Posted: Wed Jul 22, 2020 8:05 am
by roland1
robertgray3 wrote
@roland1 @Rasi @musicchamber since you guys were vocal about having issues with this it might be helpful for you to run niles' test since it's so well packaged and easily quantifiable.


I did a MIDI loopback test earlier on and found that the accuracy of recording MIDI notes played back from an internal track deviates (don't have the notes) either from 1-3ms or 1-3 "ticks" at a 64 buffer setting on my PC (i7 7700).

I also read that this kind of random hit and miss behavior is not a rare occurrence in DAWs.

But I will try Niles test though. Right now I'm a little sidetracked.