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Proceedings Paper

Modeling and experiment of future hearing aid device
Author(s): Houwen Tang; Yun-Bo Yi; M. A. Matin
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Paper Abstract

During the past few years, many new technologies have been introduced to hearing aids for a better performance. Recently, we proposed an implantable piezoelectric hearing aid. The simulation of our hearing aid is presented with a detail study of its physical properties. However, an accurate experimental study of its performance is needed. Vibration frequency is a major factor that affects the quality of a hearing aid. Among various of existing measurement technologies, laser measurement is always considered to be a precise approach for measuring the frequency properties for MEMS (micro-mechanical-electrical-system) devices. In this paper, a piezoelectric transducer used as hearing aid speaker is demonstrated and an optical measurement method for frequency measurement of our device is discussed in detail. Our measurement system is based on Mach-Zehnder interferometer system. Experimental results show that the vibration of our sample can be accurately detected using a laser beam and spectrum analyzer. The vibration frequency is calculated by measuring the intensity variance. This system aims to provide a simultaneous optical measurement with high accuracy.

Paper Details

Date Published: 3 September 2008
PDF: 9 pages
Proc. SPIE 7072, Optics and Photonics for Information Processing II, 707218 (3 September 2008); doi: 10.1117/12.796525
Show Author Affiliations
Houwen Tang, Univ. of Denver (United States)
Yun-Bo Yi, Univ. of Denver (United States)
M. A. Matin, Univ. of Denver (United States)

Published in SPIE Proceedings Vol. 7072:
Optics and Photonics for Information Processing II
Abdul Ahad Sami Awwal; Khan M. Iftekharuddin; Bahram Javidi, Editor(s)

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