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Re: Format Converters
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Re: Format Converters


  • Subject: Re: Format Converters
  • From: Jeremy Sagan <email@hidden>
  • Date: Sun, 16 Oct 2005 16:52:19 -0400

I was thinking about using AUVarispeed or AUTimePitch as a fast forward function in my application but I noticed AUVarispeed (and even more so, AUTimePitch) have latency. I don't want to add unnecessary latency to playback just in case the user presses fast forward.

I can understand AUTimepitch having (big) latencies but I don't see why AUVarispeed needs any latency at all.

It does work but because of the latency there is a nasty glitch for the duration of the latency when the button is pressed.

I know I could buffer on the output side of the plug-in but if I do that I may as well just do the sample conversion myself.

Is there a way around this besides buffering on the output side?


Jeremy

On Oct 13, 2005, at 11:10 AM, Jeremy Sagan wrote:

I have recently added support for format converters to my application. I am just wondering where there is documentation on what exactly these audio units do, their correct usage and what their parameters mean. In OS X 10.4 I notice the following audio units:

AUConverter
AUDeferredRenderer
AUMerger
AUSplitter
AUTimePitch
AUVarispeed

I have a pretty good idea what the last 2 do. I have found very limited info in the file AudioUnitParameters.h but that is it.

Jeremy
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References: 
 >Format Converters (From: Jeremy Sagan <email@hidden>)

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