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Real Ear Versus Artificial Mastoid Methods of Calibration of Bone-Conduction Vibrators

Two studies were carried out to determine the usefulness of the artificial mastoid for calibration of bone-conduction vibrators as opposed to that of the real-ear calibration technique. It was found that the artificial mastoid allows more precise comparison between vibrators than does the real-ear method. Differences in frequency response characteristics, harmonic distortion, and intensity output can readily be detected with the use of the artificial mastoid, while such comparisons appear to be less precise and more variable with the real-ear calibration method.

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