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Distortion-Compensating Filter for Middle Ear of the Cat

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2 Author(s)
Paul E. Nuechterlein ; Emerson Electric Company, St. Louis, Mo. ; Russell R. Pfeiffer

A design for an electronic filter with a transfer function inverse to that of the middle ear of the cat is given. The filter predistorts electrical input signals to an earphone driver amplifier in order to counteract the inherent low-pass operation of the middle ear. Thus, the effective bandwidth at the output of the middle ear is increased from approximately 1700 Hz to approximately 10 000 Hz, thereby permitting a new degree of stimulus control.

Published in:

IEEE Transactions on Biomedical Engineering  (Volume:BME-17 ,  Issue: 1 )