Most likely it's due to 'jitter' from the pedal due to a flimsy mechanism or maybe a dirty/glitchy potentiometer, assuming it's a continuous-type pedal. I think this issue would be less likely with the simple on-off switch type. Unplugging just the pedal but leaving the keyboard active should tell you whether it's the pedal or keyboard, but it could also be happening at the input jack.

I see, technically it might not be a bug but I wonder if the pedal can be disabled by default during playback? Or at least, have the pedal movements not affect the "recording" by default. But, it's a design decision I guess.

AlanPiano wrote:

I've been experiencing the same issue as you. Have you come across the issue again and found another solution?

Did you try Qexl's suggestion to disconnect the pedal and/or keyboard (or just power it down) during playback of recorded MIDI? I think his guess that the keyboard is generating spurious pedal-up (i.e. low-value) messages is probable.

Oh yeah, seems to be the case. Interesting!

I've been experiencing the same issue as you. Have you come across the issue again and found another solution?

Did you try Qexl's suggestion to disconnect the pedal and/or keyboard (or just power it down) during playback of recorded MIDI? I think his guess that the keyboard is generating spurious pedal-up (i.e. low-value) messages is probable.

Thanks for the reply.  It’s happened both in the embedded midi recorder in the standalone version and when using it as a plug-in in Reaper.  That said, it’s inconsistent.  When I initially started pianoteq stand-alone today it sustained all the way through a test in real time but only maintained the sustain on the recording for one bar.  The little pedal animation on the main screen was down all through the recording but came back up prematurely on the playback.  That was exactly the same in Reaper but now, 10 minutes later, it’s working fine.  Maybe something I’m doing so I’ll keep an eye on it and contact support if it happens again.

I've been experiencing the same issue as you. Have you come across the issue again and found another solution?

After that, even if it didn't give clues, unplugging your keyboard (and/or pedal) and playback some prepared MIDI - to see if that has eliminated such errant firing on/off messages while you're playing back MIDI.

Just doing that might, at least at this time, isolate it to a hardware or just a loose connection issue. Some pedals can sometimes benefit from being opened up and moving parts cleaned.

Other than those things, I'm only thinking of things which may not really make sense on the face of it - but possibly try  toggling 'Local Off' on your keyboard - seems a stretch but sometimes hitting that, or "Panic" (on keyboard or click the small round "!" button on lower right of Piantoeq's interface) can unclog some gremlin infested MIDI glitch.

can you give more detail?

Do you mean in Pianoteq standalone mode? If so, sorry haven't encountered it - maybe contact support or some others might be able to help with that here when they see the thread.

Or if you're talking about openning Pianoteq generated MIDI files in a particular DAW, maybe include what DAW you use and any other things which could give us an idea.

Different DAWs may have MIDI import filters or misinterpret something like pedal data and you could find a check-box to fix it in your DAW's settings.