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Unusual AU initialization behavior in Digital Performer?
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Unusual AU initialization behavior in Digital Performer?


  • Subject: Unusual AU initialization behavior in Digital Performer?
  • From: Chris Johnson <email@hidden>
  • Date: Wed, 14 Feb 2007 18:06:01 -0500

	I've got a user who seems happy enough, but he tells me:

"I'm using channel with Digital Performer 5.01..."
"Anyway the reason I'm writing is because whenever I open a saved project that has channel instantiated somwhere (be it aux sends, channels or the mix bus) it makes a strange cascading explosive sounds that fades in 2 or 3 seconds. After the exploding cascade there are no more issues and channel keeps working fine. I'm aware that you made this plugs for logic, nevertheless I think you should be on the loop when this kind of stuff happens."


I actually made them for any AU host, but they work as expected in Logic, AULab, Amadeus etc. As near as I can figure, what has to be happening is that Digital Performer is not running the Reset code on instantiation, and starting some IIR values I use off with insanely high values. They've gotta be REALLY crazy for it to take several seconds to die off.

I'm going to try defining the values in Channel.h and also assigning them to 0.0 there- not just in the Reset. I had this idea that everybody would call Reset *ROFL* imagine that, such an idea... looks like I have an entire product line to overhaul and put in redundant initial values, IF this workaround bails DP out.

So I'm going to ask- are they missing a trick, is it my mistake assuming Reset is supposed to be called at least once for every plugin, is this a known issue?

	Chris Johnson
	airwindows
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