Quote:
Originally Posted by Alan Carruth
Herb Hunter wrote:
"I don’t think the term, transducers, applies to acoustic guitars, they are passive radiators."
Actually, IMO, guitars are precisely transducers: devices for changing one sort of energy into another. In this case they change the somewhat regular application of force by your right hand into sound. With a bit of an assist from your left hand it can even be musical! Note that guitars are not 'amplifiers': they don't use an external power source to reinforce a small signal and turn it into a louder one. All of the power comes in from your hands, and most of it is 'lost' in the process of being turned into sound.
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That is an interesting way to look at it. To my way of thinking the kinetic energy of the right hand is transferred to the guitar. Once transferred it is still kinetic energy. I don’t see a change from one form of energy to another as when electric energy is converted to sound waves or when torque applied to a piezoelectric crystal, motion, is converted into electric current.