The introduction of transducers with a smooth frequency response has left the resonances in the tubing used to conduct the sound to the ear as the main source of uneven total frequency response of a hearing aid. A new approach to applying damping that eliminates cut-and-dry methods has been devised. Th'result is a smooth frequency characteristic independent of the tubing length.

Author: Carlson, Elmer V.
Affiliation: Industrial Research Products, Inc., a Knowles Company, Elk Grove Village, IL
JAES Volume 22 Issue 6 pp. 426-429; August 1974
Publication Date: August 1, 1974

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