From bruce@ashbysolutions.com Mon Jan 29 06:14:24 2007
Subject:Double Triggering Part II

Hi Andreas,

While reading back my previous email, I realized that I never actually explained what double-triggering is!

Double-triggering is caused when the key is released very quickly. The key will slam into the upper end of the keybed, and if there is enough energy left in the key, it may bounce back downward 1-2 times. This bounce is both very fast and not very large, so it is difficult to see with the eye. If the bounce is far enough to trip the upper key switch, though, a double-trigger will occur. This is quite likely with certain Hammond playing styles, especially funk and R&B.

From the point of view of the Hammond clone player, the first switch should be located a little farther down the line of key travel to prevent problems from the bounce. From the point of view of the velocity-based player, however, the first switch should be located as high as possible, to provide as much measurement range as possible.

Unfortunately, clone players are only 1-2% of the keyboard world. :-(

Regards,

-BW

--
Bruce Wahler
Design Consultant
Ashby Solutions™ http://consult.ashbysolutions.com
978.386.7389 voice/fax
bruce@ashbysolutions.com

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