The animation above show dynamic condition when the vibrating E string attacks the treble bridge feet and the end blocks. The arching structure become into dynamic state between stationary structure and structure that is driven by the string on the treble bridge foot and the end blocks.

Changing the structural conditions, the stiffness of arching shape, produces other mode shape and the acoustic result will be another.

This mainly is done by changing the thickness conditions on the fields between stationary structure and moving end blocks.

A report explaining how to change dynamical conditions will be available in a coming report.