"Soft materials?" You mean sorbothane? Why the circumlocution?
I worked with airborne sonars at one time and am sceptical about the transfer of acoustic energy to turntables through the air, since depending on frequencies and the size of the turntable or its components, the sound may bounce back or pass right by. Also the impedance mismatch between air and solid objects is considerable, so I can't see much energy getting in that way.
In any case why are there no measurements of this phenomenon to clarify what is going on?
I worked with airborne sonars at one time and am sceptical about the transfer of acoustic energy to turntables through the air, since depending on frequencies and the size of the turntable or its components, the sound may bounce back or pass right by. Also the impedance mismatch between air and solid objects is considerable, so I can't see much energy getting in that way.
In any case why are there no measurements of this phenomenon to clarify what is going on?