Response of an edge‐supported circular membrane electret earphone. Part I—Theory
作者:
Ilene J. Busch‐Vishniac,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1984)
卷期:
Volume 75,
issue 3
页码: 977-989
ISSN:0001-4966
年代: 1984
DOI:10.1121/1.390564
出版商: Acoustical Society of America
数据来源: AIP
摘要:
The behavior of an edge‐supported circular membrane foil electret earphone is studied in a three‐step analytical procedure. First, the static deflection is determined for a specified set of transducer parameters. The deflection is expressed as a power series in radial location. Second, the dynamic deflection, which depends on the static deflection, is found. It is also expressed as a power series in radial location. Third, the linear dynamic response is examined to determine a procedure for maximizing the sound pressure level which is generated in the ear. The results presented here indicate that with the choice of an optimum set of earphone parameters it is possible to construct an earphone with a sensitivity of 82 dB/V and a relative distortion level of about −40 dB.
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