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physics.pop-ph2016
Air modes of the Bacon internal resonator banjo
David Politzer
Sound measurements on a sequence of related, similar constructions with slightly different dimensions confirm a simple picture of the air modes of the internal resonator banjo's bo…
physics.pop-ph2016
Banjo Rim Height and Sound in the Pot
David Politzer
Rim and back geometry determine much of the behavior of sound inside the pot, whose effect on total, produced sound is subtle but discernible. The theory of sound inside a cylinder…
physics.pop-ph2014
Banjo timbre from string stretching and frequency modulation
David Politzer
The geometry of a floating bridge on a drumhead soundboard produces string stretching that is first order in the amplitude of the bridge motion. This stretching modulates the strin…