In attempting to do phase vocoding analysis with Winsound/Utilities, I get
the following error in the Winsound window:

pvanal: 1 is a bad window overlap index

parameters are: 
frame size = 1024 (tried others but doesn't seem to make a difference)
window overlap factor = 4 (recommended in the  manual)
hop size = 0. 

If hop size blank, I get a pop-up Windows error message that has no message
- only the window, caution icon, and OK button.

Sample rate, begin and end default to the sound file (aiff).

BTW pvanal (as standalone exe file) runs fine under DOS, using same
parameters. Seems to be a problem with WInsound's interface, or am I using
it wrong?

Thanks in advance.

-David.