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Audio Playback Latency
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Audio Playback Latency


  • Subject: Audio Playback Latency
  • From: "Andrew Butcher" <email@hidden>
  • Date: Tue, 13 Jan 2009 15:26:18 -0700

Hi,

I need a way to accurately get a time stamp for when playback from a speaker begins.  Any constant latency between the timestamp and playback is perfectly acceptable in my application, but variations between the timestamp and actual playback time are very problematic.  

Can anyone suggest a highly accurate way of getting a timestamp for when playback begins?  I've tried grabbing the time from the render callback, but it doesn't seem to be any more accurate.  I've got a mean playback time that varies on the size of my buffer, but a standard deviation of about 4ms that I can't seem to reduce.

Thanks,
Andrew


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