BEHIND-THE-EAR HEARING AID
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United States of America Patent
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Issued Date -
Jun 26, 2008
app pub date -
Dec 21, 2007
filing date -
Dec 26, 2006
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
In a behind-the-ear hearing aid 1 having a hook 3, a tube 4 and a joint 5 between a hearing aid body 2 and an ear-plug 6, the joint 5 is provided with a damper 8. It is desirable that the value of the acoustic impedance of the damper 8 be less than .+-.10% of the value of the characteristic impedance of a path 7 formed by making connections between the hook 3, the tube 4 and the joint 5.
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