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automation.png (25,966 bytes) |
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I just tested that with Diva (1.4.3), automating the "output" volume, and cannot reproduce the issue. Could you share the .ardour session file? perhaps there is something else that is key here, maybe related to BPM/samplerate (rounding issues)? |
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Thanks for looking into this. I didn't keep the previous test session, i was using the new vst3 version of TAL Noisemaker in that one. I created a new one using Diva and automation for the output parameter. i get stuck notes this time. I attached an archive of the test session. |
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Here is a test session using the vst3 version of TAL Noisemaker: https://tal-software.com/products/tal-noisemaker. In this case notes are dropped. The same thing happens for the other TAL plugins. |
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I've mitigated the issue in Ardour 6.8-68-g13f5fb3dee, but the underlying issue cannot be fixed before Ardour 7.0 There are rounding errors when converting music-time (bar/beat) to sample-time which leads to stuck notes, among other issues. In this case the rounding error coincided with splitting the process cycle to send automation-data to VST3 plugin (process n samples, update parameter, process remaining samples). VST2 plugins were not affected since VST2-instruments are always called with a fixed buffer-size. PS. using a sample-rate of 48000 instead of 44100 greatly reduces the likelihood of those rounding errors. which is why I was not able to reproduce this issue. |
- Anonymous
