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IDProjectCategoryView StatusDate SubmittedLast Update
0008865ardourbugspublic2022-01-27 15:072022-01-27 22:31
ReporterBleuzen Assigned Tox42  
PrioritynormalSeverityminorReproducibilityalways
Status closedResolutionno change required 
PlatformArchOSLinuxOS Version(any)
Product Version6.9 
Summary0008865: VST3 midi timestamps are incorrect
DescriptionHi, so apparently Ardour 6.9 sends incorrect midi timestamps to vst3 plugins. This leads to notes not being played at the correct time / delayed, for example for Surge XT, see:
https://github.com/surge-synthesizer/surge/issues/5830
Steps To Reproduce1) Load Surge XT synth plugin
2) Place some midi
3) Use a somewhat higher buffer size so it is better noticeable (2048 should do)
4) Play your midi notes
5) Notice incorrect playback/timing
TagsNo tags attached.

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x42

2022-01-27 15:32

administrator   ~0026312

I do not have surge installed, but I cannot reproduce this with other VST3 plugins.

e.g Diva with a short attack is *spot on* when bouncing MIDI to audio. also buffersize independent.
diva-vst3-align.png (251,276 bytes)   
diva-vst3-align.png (251,276 bytes)   

x42

2022-01-27 22:31

administrator   ~0026315

Issue in Surge - see https://github.com/surge-synthesizer/surge/issues/5830

Issue History

Date Modified Username Field Change
2022-01-27 15:07 Bleuzen New Issue
2022-01-27 15:32 x42 File Added: diva-vst3-align.png
2022-01-27 15:32 x42 Note Added: 0026312
2022-01-27 22:31 x42 Assigned To => x42
2022-01-27 22:31 x42 Status new => closed
2022-01-27 22:31 x42 Resolution open => no change required
2022-01-27 22:31 x42 Note Added: 0026315