title: A system for generating a variable mechanical impedance and its use in an investigation of the electromechanical properties of the B71 audiometric bone vibrator.
abstract: A method of presenting a bone vibrator with a variable mechanical load is described. Reciprocal relationships between electrical and mechanical properties of the B71 vibrator have been investigated and it is concluded that the vibrator behaves as a linear, reversible electrodynamic system. The mechanical impedance of the vibrator has been measured in the frequency range 250-4000 Hz. The relevance of these measurements to audiometer calibration and to sound radiation from the vibrator is discussed.
mesh_terms: D000158:Acoustic Impedance Tests / Q000295:instrumentation*; D001844:Bone Conduction; D004558:Electric Stimulation; D006801:Humans; D008416:Mastoid / Q000502:physiology; D014732:Vibration