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Re: Spurious MIDI note-on messages in AU
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Re: Spurious MIDI note-on messages in AU

On the off chance that anyone else has a similar problem I tracked my bug down to a dodgy pointer in MySynthNote::Attack() which caused that function to 'bum-out' early for want of a better expression. In MonoTimbralInstrumentBase::RealTimeStartNote() below you can see that IncNumActiveNotes() is called before AttackNote which is why I got seemingly spurious note-on events.. I post just in case anyone else makes this kind of mess :)

IncNumActiveNotes();
note->AttackNote(NULL, ..)
inGroup->mNoteList[kNoteState_Attacked].AddNote(note);
return noErr;

Stephen


On 6 Aug 2008, at 09:54, Stephen Blinkhorn wrote:

Hi all,

I know this a slightly long shot and a slightly desperate post :) For some reason, after recent code changes of course, I'm getting spurious MIDI note-on messages the first time my synth receives a note. 6 to be precise. The problem is that these message are not accompanied by a note-off so they just get stuck and are no longer free notes. This is for a synth built upon the SinSynth structure although a lot has changed. But I don't know why my changes have affected this area. It seems that StartNote in AUInstrumentBase is putting 6 extra note-on events in the SynthEventQueue which PerformEvents picks up and then calls RealTimeStartNote.

Anyway, does this ring any bells for anyone.

Thanks,
Stephen.
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 >Spurious MIDI note-on messages in AU (From: Stephen Blinkhorn <email@hidden>)























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