would it be possible to induce the vibration of the metal piece (assuming it's magnetic) without nails?
using very rapid magnetic oscillations (like a speaker??)?
I think the electronics would be different, but is it possible?
using very rapid magnetic oscillations (like a speaker??)?
I think the electronics would be different, but is it possible?
You might like the Magnetic Resonator Piano: http://instrumentslab.org/research/mrp.html
You could send a plain sine wave matching the frequency of the bar above it, but at that point you've just invented a single frequency speaker.