Re: software reverb to use with LIVE

[Jeff Larson <Jeffrey.Larson@Sun.COM>]

Art Simon wrote:
 > On Apr 2, 2005 1:55 AM, Per Boysen <per@boysen.se> wrote:
 >
 >
 >>The other day I decided to record an improvisation
 >>with this set-up and I set an audio track to "input: Resampling",
 >>record enabled it and hit a clip for recording while I played. Then I
 >>heard awful crackles in the audio during recording. But the funny thing
 >>was that the recorded file on the drive was ok! Audio artifacts only
 >>affected playback audio.
 >
 > I've noticed the same thing when recording "live" in EnergyXT.  I'd
 > love to hear a technical explanation of why it works this way.


When this happens to me, it is because the output side of the
audio stream is too slow to keep up with the audio interrupt rate.
In other words, output latency is too low.  This results in output
buffers being dropped which you hear as a crackle.  On the input
side, buffers can be queued if you're not processing them fast enough,
so you can still get a clean recording even though you can't monitor it
without crackles.

Jeff