Twister Posted July 30, 2023 Share Posted July 30, 2023 If I position the playhead before a MIDI note and start the playback, resetting the playback after the MIDI note by clicking the play button or pressing enter will inconsistently trigger a CC 120 (all sound off) message if repeated often enough. This CC message will instantly mute any decaying sound coming from the external instrument. To reproduce: Create an External MIDI instrument with external instument plug-in. MIDI destination must be set to something. I have it set to USB MIDI Device (an audio interface with MIDI I/O). Having an actual instrument is not required, but it can provide auditive feedback that helps identifying the issue. Create a region with a note on the first beat. It can be 1/16th for example, although the length shouldn't matter. Position the playhead 1-2 beats before the region/note so that you have enough time to observe MIDI out messages. Start the playback. After the note has played, without stopping, keep resetting the playback repeatedly by clicking on the play button or pressing enter. The playhead must reach the MIDI note between repeats. Watch the MIDI out display, MIDI CC 120 should appear randomly. With an External MIDI instrument without external instrument plug-in this does not occur. With this the CC 120 is sent consistently every time, which I think should be intended behavior (although I'd like it to be optional). Logic Pro 10.7.9 Mac OS 13.4.1 Quote Link to comment Share on other sites More sharing options...
Jordi Torres Posted July 30, 2023 Share Posted July 30, 2023 Hi Twister, Although I agree this behavior should probably be optional, it is not a bug and it is not inconsistent. You need to test with a better monitoring tool than Logic's MIDI Activity Display. I recommend you use Snoize's MIDI Monitor for this. I noticed this CC 120 recently and wondered when this was introduced. Turns out it's been there since Logic 10.5. And as far as I can tell the behavior is exactly the same with "classic" External MIDI tracks and Software Instrument tracks with the External Instrument plugin. J. Quote Link to comment Share on other sites More sharing options...
Twister Posted July 30, 2023 Author Share Posted July 30, 2023 I am testing it with MIDI Monitor and it is inconsistent. I'm looking at All Sound Off messages: Sometimes it is triggered by playback reset and sometimes it is not. Quote Link to comment Share on other sites More sharing options...
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