Helen Bach
if it ain't Baroque ...
hello Richard,
the 'sound' one gets when materials are hit is governed by a few things, how the material is made, what the exact composition is, what the dimensions are and how it is supported. Added to that is what you hit it with (impedance of each).
One of the major influences is what the critical frequency is. Pertinent to this reply is what happens below and above the critical frequency. Below the critical frequency, resonances begin to be radiated (into the environs surrounding the structure), at lower frequencies, radiation is small, but as one approaches the critical frequency, radiation increases, although the amount depends on the harmonic content. At the critical frequency, the radiation is amplified several fold. Above the critical frequency, all resonances are radiated 100%. So what one hears when the structure is hit is the sum of all the radiating resonances.
Hope that makes sense.
the 'sound' one gets when materials are hit is governed by a few things, how the material is made, what the exact composition is, what the dimensions are and how it is supported. Added to that is what you hit it with (impedance of each).
One of the major influences is what the critical frequency is. Pertinent to this reply is what happens below and above the critical frequency. Below the critical frequency, resonances begin to be radiated (into the environs surrounding the structure), at lower frequencies, radiation is small, but as one approaches the critical frequency, radiation increases, although the amount depends on the harmonic content. At the critical frequency, the radiation is amplified several fold. Above the critical frequency, all resonances are radiated 100%. So what one hears when the structure is hit is the sum of all the radiating resonances.
Hope that makes sense.