Electrical audio signal processing systems and devices – Hearing aids – electrical – Specified casing or housing
Reexamination Certificate
2007-07-24
2007-07-24
Kuntz, Curtis (Department: 2614)
Electrical audio signal processing systems and devices
Hearing aids, electrical
Specified casing or housing
C381S312000, C381S327000, C381S328000
Reexamination Certificate
active
10284877
ABSTRACT:
A hearing aid includes a microphone for providing an electrical signal representative of a received acoustic signal, a means for filtering the electrical signal and a means for automatic switching. Upon detecting a presence of a magnetic field, the means for automatic switching enables the means for filtering to modify a frequency response of the hearing aid to boost a low frequency gain and reduce a high frequency gain. Such filtering can be used with or without a telecoil. A hearing aid including a telecoil is configured with a preamplifier, a inductive element, and a switch control integrated onto a single common circuit board.
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Bren Mark A.
Hagen Lawrence T.
Peterson Timothy S.
Roberts Randall W.
Dabney P.
Kuntz Curtis
Micro Bar Technology, Inc.
Schwegman Lundberg Woessner & Kluth P.A.
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