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Attenuating The Feedback Pressure Of A Light-Activated Hearing Device To Allow Microphone Placement At The Ear Canal Entrance, Morteza Khaleghi, Sunil Puria
Attenuating The Feedback Pressure Of A Light-Activated Hearing Device To Allow Microphone Placement At The Ear Canal Entrance, Morteza Khaleghi, Sunil Puria
Morteza Khaleghi
The Earlens Contact Hearing Device (CHD) is a non-surgical hearing device consisting of three components:
Tympanic Lens (Lens), which is a light-activated balanced-armature transducer that drives the middle ear through direct contact with the umbo. Light Tip that shines pulses of light into the ear canal to wirelessly drive and power the Lens. Behind-the-ear unit (BTE) that receives incoming sound and outputs an encoded and amplified signal to drive the Light Tip.
Goals of this work are to characterize the ear-canal feedback pressure (ECFP) due to umbo-drive forces; characterize the gain margin (i.e., the MSG) and equivalent pressure output (EPO) …