Modeling and experiment of future hearing aid device

Houwen Tang; Yun-Bo Yi; M. A. Matin

doi:10.1117/12.796525

3 September 2008 Modeling and experiment of future hearing aid device

Houwen Tang, Yun-Bo Yi, M. A. Matin

Proceedings Volume 7072, Optics and Photonics for Information Processing II; 707218 (2008) https://doi.org/10.1117/12.796525
Event: Optical Engineering + Applications, 2008, San Diego, California, United States

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.

Citation Download Citation

Houwen Tang, Yun-Bo Yi, and M. A. Matin "Modeling and experiment of future hearing aid device", Proc. SPIE 7072, Optics and Photonics for Information Processing II, 707218 (3 September 2008); https://doi.org/10.1117/12.796525

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