Earpiece, telephone handset and headphone intended to correct individual hearing deficiencies
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United States of America Patent
Stats
-
Aug 16, 1988
Grant Date -
N/A
app pub date -
Aug 20, 1985
filing date -
Sep 7, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An earpiece comprises a suction cup sensor, a preamplifier, a potentiometer for varying the gain of the amplifier, a pass band filter and electronic means enabling the user to adjust the central frequency and/or the width of the pass band of the filter. One application of the invention is the construction of self-contained and individualized telephone handsets or headphones which may be connected without any wire connection on any telephone set.
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Family
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