Abstract
Wideband acoustic immitance measures (WAI) are an active area of research aimed at the development of an objective and noninvasive audiometric test that can reliably identify a range of middle-ear disorders. This work compares repeated WAI measurements (absorbance and its closely related quantity power reflectance, in particular) made on normal hearing subjects. In particular, measurements were made on the left and right ears of nine subjects ages 19–22 and seven subjects ages 41 to 47. Each subject returned for repeated measurement sessions between four and eight times. At each measurement session, WAI was measured using two distinct FDA-approved devices: HearID from Mimosa Acoustics and Titan from Interacoustics. This presentation will compare the WAI measurements between two distinct age groups, the two distinct instruments, and across measurement sessions. Additional analyses will be presented to determine if assumptions about ear-canal areas might explain differences between the systems from Mimosa Acoustics and Interacoustics.
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