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Be a Better Informed Consumer (click on links below)

Hearing Aids of the Past

The Parts of a Hearing Aid

Price and Performance of Digital and Analog Circuits

Directional Microphones and the Problems of Noise

by Chris Halpin, Ph.D.
Department of Audiology

These slideshows are a series of different slides, that change automatically every six seconds.

To our users: The information presented here is not intended to diagnose health problems or to take the place of professional medical care. If you have persistent health problems or if you have further questions, please consult your health care provider.

web page updated: Dec. 14, 2005
© 2003 Massachusetts Eye and Ear Infirmary