Just to add, there’s plywood and there’s plywood.
It is intriguing Karen as I have been studying the theory of the wire harps, the thicker the sound board, the longer the sustain. What appears to heppen is the soundboard absorbs the energy that maintains the sustain. I have duplicated this with my brass soundboard experiments.
What I hope you are trying to express is that the boundary conditions for the string, which are assumed by simple theory to be perfectly rigid end points, cannot be so in practice (as the soundboard is moving or there would be no sound) and therefore objects beyond the main vibrating length of the string can have an effect on the vibration.
- The forum ‘Amateur Harpists’ is closed to new topics and replies.