Devices and methods for hearing
A device to transmit an audio signal to a user comprises a transducer and a support. The support is configured for placement on the eardrum to drive the eardrum. The transducer is coupled to the support at a first location to decrease occlusion and a second location to drive the eardrum. The transducer may comprise one or more of an electromagnetic balanced armature transducer, a piezoelectric transducer, a magnetostrictive transducer, a photostrictive transducer, or a coil and magnet. The device may find use with open canal hearing aids.
1. A method of inductively transmitting an audio signal to a user, the method comprising:
inductively coupling a first coil to a second coil, wherein the first coil is placed in an ear canal of the user and the second coil is a part of a transducer placed at least partially against an eardrum of the user; and
driving a current through a third coil, wherein the second coil is electrically connected to the third coil.
2. A method according to claim 1 , the method further comprising the step of moving a balanced armature in response to the current driven through the third coil.
3. A method according to claim 2 , the method further comprising the step of vibrating the eardrum of the user through a reed post connected to the balanced armature.
4. A method according to claim 3 , the method further comprising the step of urging the transducer toward the eardrum when the transducer is placed at least partially against the eardrum.
5. A method according to claim 1 the method further comprising the step of vibrating a vibrator in response to a magnetic field.