False beats - a correction

[BobDavis88@aol.com]

> If there are false beats, then the vertical component of the string
vibration
>  would have to vary cyclically.
> Bob Scott

 Only if you explain false beats as amplitude modulation. Frequency
modulation makes more sense to me, as explained by Jim Coleman Sr.
(difference in speaking lengths in vertical and horizontal modes causes pitch
change. This can be due to unclean notch OR bridge pin which wobbles in
horizontal mode, causing the string to act longer in that mode).

Bob Davis