Hearing aid with permanently adjusted frequency response

Electrical audio signal processing systems and devices – Sound effects – Reverberators

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381 68, 381 682, H04R 2500

Patent

active

054066336

ABSTRACT:
A hearing aid is permanently adjusted to match prescribed amplification characteristics at predetermined frequencies. A single channel filter (24) includes three identical filter stages (60, 62, and 64) that are optionally cascaded in series. Each of the filter stages (60, 62, and 64) exhibits a frequency response curve having a first corner frequency (36) below which the magnitude of the response curve approaches a predetermined minimum value, a second corner frequency (38) above which the magnitude of the response curve approaches a maximum value, and a predetermined gain in magnitude between the minimum and maximum values.

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