There 's a problem with the Audio Unit wrapper. When I modify a parameter from the editor, the DAW doesn’t handle it. Unlike VST, it has no effect on the control surface sliders or on the automated parameters.
After digging a bit into the code, I found the method sendAUEvent that is supposed to send the parameter changed notification to the unit:
void sendAUEvent (const AudioUnitEventType type, const int index)
if (AUEventListenerNotify != 0)
auEvent.mEventType = type;
auEvent.mArgument.mParameter.mParameterID = (AudioUnitParameterID) index;
AUEventListenerNotify (0, 0, &auEvent);
But the notification has no effect, there’s no callback from the unit. Why is there a problem here? May be a listener to juceFilter is missing?