Hearing system which is responsive to acoustical feedback

Details Hearing system which is responsive to acoustical feedback Hearing system which is responsive to acoustical feedback

2003-10-01

2009-12-29

Kuntz, Curtis (Department: 2614)

Electrical audio signal processing systems and devices

Hearing aids, electrical

Remote control, wireless, or alarm

C381S318000, C381S312000

Reexamination Certificate

active

07639827

ABSTRACT:
A hearing system includes a hearing device with an input acoustical/electrical converter. The system is controllably operable in at least first and second modes. A sensing unit senses behavior of an acoustical impedance of an acoustical input of the input converter. An evaluation unit evaluates the sensed behavior over at least one predetermined behavior of the acoustical impedance. An output of the evaluation unit controls change over from the first mode to the second mode.

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Mark Ross, Dr. Ross on Hearing Loss Acoustic Feedback Control, Hearing Loss, May/Jun. 1997, 4 pages.
European Search Report for 1424873 dated Oct. 2, 2009.

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