[ardour-users] playback and capture sample rates do not match (44100 vs. 44099)

Wolfgang Woehl tito at rumford.de
Fri Feb 4 00:12:18 PST 2005

Kevin Cosgrove <kevinc at doink.com>:
> How much do I need to worry about playback/capture rates mismatching
> by 1Hz?  That's 0.002%  In a 5 minute recording that amounts to 0.68
> seconds.  That's certainly audible.  What could/should I do about
> this?

Do that again: It's 0.0068 seconds (300 samples) in 5 minutes. You can 
set playback rates in mixer strips but the finest you'll get from the 
gui is 1.001 or 0.999 (~43Hz difference).

You could set a finer value directly in the session file. Look for 
<DiskStreams> and "speed". With 6 digits you can take 0.044 Hz steps.

Make sure you need to bother. You would probably want to set up 2 click 
tracks with 1.000000 and 1.000023 (about 1 Hz difference) and listen to 
that for 5 minutes. That should be fun.

How did you measure the difference? Is it stable?


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