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DLSMusicDevice and reverb

Subject: DLSMusicDevice and reverb
From: "E. Tejkowski" <email@hidden>
Date: Sat, 18 Nov 2006 16:52:17 -0600
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I have seen it mentioned that by default the built-in internal reverb of the DLSMusicSynth is active. I've also seen code in more than one place that shows how to deactivate it. Why is that when I omit the line to deactivate the reverb, I not only don't hear reverb, I hear nothing coming from my DLSSynth? Also, what parameters does the default reverb have and how I can access them?

Below is some pseudocode showing what I am doing:

err = NewAUGraph err = AUGraphNewNode(graph, description, 0, 0, synthNode)//dlsSynth err = AUGraphNewNode(graph, description, 0, 0, outputNode)//output err = AUGraphConnectNodeInput(graph,synthNode,1,outputNode,0)// connect dls to output err = AUGraphUpdate(graph) err = AUGraphOpen(graph) err = AUGraphInitialize(graph)

// Turn off the reverb on the synth err = AUGraphGetNodeInfo (graph, synthNode, 0,0,0, synthUnit) usesReverb = 0 //THIS NEXT LINE IS THE LINE THAT I OMIT, WHICH GIVES ME SILENCE err = AudioUnitSetProperty(synthUnit, kMusicDeviceProperty_UsesInternalReverb, kAudioUnitScope_Global, 0, usesReverb, 4)

  // Start playing
  err = AUGraphStart(graph)

Thanks,
Erick
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