Topic: Could\should there be lid impedance, etc settings?
Do pianos differ much in the thickness and density of the lid wood? Is the lid always the same--very dense to just project the sound, or does it absorb some frequencies, and also vibrate enough to be heard as an oscillator? (Seems too thin and loosely coupled to just reflect the vibrations--surely it vibrates on its own a lot. Enough that its an oscillator that has its own sound?)
Anyone know the details about specific instruments? Does a Hamburg model B Steinway have exactly the same lid as a Hamburg model D or a bright Yamaha?
I'm not just trying to find new parameters to play with--the position of the lid comes into play here, as we already know: as the lid closes, its composition will have different effects on the sound according to the degree to which it reflects some vibrations back down to the strings and soundboard or vibrates, yes? If the lid is closed, and thus (loosely) coupled on all its edges, its density\impedance\q-factor come into play as though it were a second soundboard? (I'm aware, of course, that we already have settings for the lid position--I'm just wondering how different lids would have different effects as said lid closes on said piano.)
Just thinking aloud...and yes, probably also just wanting new parameters to toy with.
And I guess this leads to other questions--could there be impedance, cut-off, and Q-factor settings for the sides of the piano? For the harp? (Don't worry--I'm not going to ask for control over the number of hinges connecting the lid to the body, their impedance, etc...)