Acoustic vibration of the amphibian eardrum studied by white noise analysis and holographic interferometry
作者:
M. Anson,
A. C. Pinder,
M. J. Keating,
S. H. Chung,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1985)
卷期:
Volume 78,
issue 3
页码: 916-923
ISSN:0001-4966
年代: 1985
DOI:10.1121/1.392922
出版商: Acoustical Society of America
数据来源: AIP
摘要:
The motion of the amphibian eardrum under free‐field acoustic stimulation was investigated using time‐averaged holography. We show that the amplitude is linearly related to sound pressure up to ±1000 nm. The frequency response of the eardrum shows broad resonance characteristics with a main peak between 1200–2200 Hz. The velocity of the tympanic membrane’s motion at its resonance frequency matches the acoustic velocity of air particles. The resonance characteristics of the eardrum are also revealed by white noise stimulation. The power spectrum obtained by Fourier transformation of the autocorrelation of the response to noise resembles closely that obtained by holography.
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