Open wave file in RB
Click on the Audio Chord Wizard (ACW) icon
When the pop up appears change it to 'NO' (don't keep tempo map, let ACW make a new one)
Play it in ACW and hit the F8 key on the 'one' of every beat.
When done, export it back to RB and open the Tempo map window.
You'll see the variations pretty exactly.

How much is acceptable?
Well I wouldn't worry about any numbers to the right of the decimal!


I do not work here, but the benefits are still awesome
Make your sound your own!