ArticleThe Journal of the Acoustical Society of America2015
Non-invasive estimation of middle-ear input impedance and efficiency.
Article in The Journal of the Acoustical Society of America, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 23 citations in OpenAlex.
- Wideband acoustic immittance: Suitable quantities for assessing middle-ear status.The Journal of the Acoustical Society of America · 2026Article
- Article
- The influence of tympanic-membrane orientation on acoustic ear-canal quantities: A finite-element analysis.The Journal of the Acoustical Society of America · 2024Article
- A systematic study on effects of calibration-waveguide geometry and least-squares formulation on ear-probe source calibrations.The Journal of the Acoustical Society of America · 2022Article
- The influence of otitis media with effusion on middle-ear impedance estimated from wideband acoustic immittance measurements.The Journal of the Acoustical Society of America · 2021Article
- Effect of Middle-Ear Pathology on High-Frequency Ear Canal Reflectance Measurements in the Frequency and Time Domains.Journal of the Association for Research in Otolaryngology : JARO · 2019Article
- On the calculation of reflectance in non-uniform ear canals.The Journal of the Acoustical Society of America · 2019Article
- Sound pressure distribution within human ear canals: II. Reverse mechanical stimulation.The Journal of the Acoustical Society of America · 2019Article
- Compensating for ear-canal acoustics when measuring otoacoustic emissions.The Journal of the Acoustical Society of America · 2017Article
- Article
Corrections and comments
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
Abstract
A method to transform the impedance measured in the ear canal, ZEC, to the plane of the eardrum, ZED, is described. The portion of the canal between the probe and eardrum was modeled as a concatenated series of conical segments, allowing for spatial variations in its cross-sectional area. A model of the middle ear (ME) and cochlea terminated the ear-canal model, which permitted estimation of ME efficiency. Acoustic measurements of ZEC were made at two probe locations in 15 normal-hearing subjects. ZEC was sensitive to measurement location, especially near frequencies of canal resonances and anti-resonances. Transforming ZEC to ZED reduced the influence of the canal, decreasing insertion-depth sensitivity of ZED between 1 and 12 kHz compared to ZEC. Absorbance, A, was less sensitive to probe placement than ZEC, but more sensitive than ZED above 5 kHz. ZED and A were similarly insensitive to probe placement between 1 and 5 kHz. The probe-placement sensitivity of ZED below 1 kHz was not reduced from that of either A or ZEC. ME efficiency had a bandpass shape with greatest efficiency between 1 and 4 kHz. Estimates of ZED and ME efficiency could extend the diagnostic capability of wideband-acoustic immittance measurements.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.