Invention Grant
- Patent Title: Hearing aid magnetic sensor with counter windings
- Patent Title (中): 助听器磁传感器带逆向绕组
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Application No.: US13422154Application Date: 2012-03-16
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Publication No.: US09025803B2Publication Date: 2015-05-05
- Inventor: Michael Karl Sacha
- Applicant: Michael Karl Sacha
- Applicant Address: US MN Eden Prairie
- Assignee: Starkey Laboratories, Inc.
- Current Assignee: Starkey Laboratories, Inc.
- Current Assignee Address: US MN Eden Prairie
- Agency: Schwegman Lundberg & Woessner, P.A.
- Main IPC: H04R25/00
- IPC: H04R25/00
Abstract:
A hearing aid includes a magnetic sensor to sense a sound signal being a magnetic field. The magnetic sensor includes a telecoil to sensor the sound signal and a counter coil to cancel a noise signal resulting from electromagnetic interference. In one embodiment, a driver circuit for the counter coil allows for automatic adjustment of the hearing aid circuit for an interference null.
Public/Granted literature
- US20120294468A1 HEARING AID MAGNETIC SENSOR WITH COUNTER WINDINGS Public/Granted day:2012-11-22
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