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- W4387472253 abstract "Wideband acoustic immittance (WAI), in particular, ear-canal absorbance, is a useful clinical tool for assessing the middle-ear status and diagnosing conductive hearing disorders. However, little evidence documents the measurement accuracy of WAI in human ears, and, because its clinical adoption is still in its infancy, no international standards exist to define appropriate requirements for commercial instrumentation. A challenge from a standardization point of view is the lack of an absorbance reference, i.e., an acoustic load similar to the adult ear canal with a known absorbance. This paper explores various approaches to providing such an acoustic load to quantify WAI measurement accuracy. The approaches considered here include standardized and inexpensive occluded-ear simulators, and a family of semi-anechoic waveguides with different step discontinuities in cross-sectional area. These semi-anechoic waveguides could be included in a future WAI standard. In addition, a means of monitoring the stability of WAI calibrations over time is proposed, utilizing a single inexpensive occluded-ear simulator." @default.
- W4387472253 created "2023-10-11" @default.
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- W4387472253 date "2023-10-01" @default.
- W4387472253 modified "2023-10-16" @default.
- W4387472253 title "A reference for ear-canal absorbance based on semi-anechoic waveguides" @default.
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- W4387472253 doi "https://doi.org/10.1121/10.0021313" @default.
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