Vd. Larson et al., MEASUREMENTS OF ACOUSTIC-IMPEDANCE AT THE INPUT TO THE OCCLUDED EAR CANAL, Journal of rehabilitation research and development, 30(1), 1993, pp. 129-136
Multi-frequency (multi-component) acoustic impedance measurements may
evolve into a sensitive technique for the remote detection of aural pa
thologies. Such data are also relevant to models used in hearing aid d
esign and could be an asset to the hearing aid prescription and fittin
g process. This report describes the development and use of a broad-ba
nd procedure which acquires impedance data in 20 Hz intervals and desc
ribes a comparison of data collected at two sites by different investi
gators. Mean data were in excellent agreement, and an explanation for
a single case of extreme normal variability is presented.