Intermodulation distortion reduction in a contact hearing system
AssigneeEarlens Corporation
InventorsStuart W. Wenzel, Lawrence W. Arne
Life of this patent
Estimating the term…
Abstract
In embodiments of the invention, the present invention is directed to a contact hearing system including: a transmit circuit including a transmit coil positioned in an ear tip, THE transmit circuit having a first bandpass characteristic, wherein the transmit circuit is tuned such that a center of the first bandpass characteristic is set at a first frequency; and a receive circuit including a receive coil positioned on a contact hearing device, the receive circuit having a second bandpass characteristic, wherein the receive circuit is tuned such that a center of the second bandpass characteristic differs from the center of the first bandpass characteristic.
Claims35
A contact hearing system comprising:
- a transmit circuit comprising a transmit coil positioned in an ear tip, the transmit circuit having a first bandpass characteristic, wherein the transmit circuit is tuned such that a center of the first bandpass characteristic is set at a first frequency;
- and
- a receive circuit comprising a receive coil positioned on a contact hearing device, the receive circuit having a second bandpass characteristic, wherein the receive circuit is tuned such that a center of the second bandpass characteristic is set to a second frequency and differs from the center of the first bandpass characteristic, and wherein the first frequency is selected to be less than 10% lower than the second frequency.
A method of tuning a transmit circuit and a receive circuit, wherein the transmit and receive circuit form components of a contact hearing system, the transmit circuit having a bandpass characteristic and the receive circuit having a receive bandpass characteristic, the method comprising the steps of:
- tuning bandpass characteristics of the transmit circuit such that a center of the transmit bandpass characteristic is set to a first frequency;
- and
- tuning bandpass characteristics of the receive circuit such that a center of the receive bandpass characteristic is set to a second frequency differing from the first frequency, wherein the first frequency is selected to be less than 10% lower than the second frequency.
A contact hearing system comprising:
- a transmit circuit comprising a transmit coil positioned in an ear tip, the transmit circuit having a first passband, wherein the transmit circuit is tuned such that a center of the first passband is set at a first frequency;
- and
- a receive circuit comprising a receive coil positioned on a contact hearing device, the receive circuit having a second passband, wherein the receive circuit is tuned such that a center of the second passband differs from the center of the first passband and such that the center of the second passband is within the first passband.
A method of tuning a transmit circuit and a receive circuit, wherein the transmit and receive circuit form components of a contact hearing system, the transmit circuit having a passband and the receive circuit having a passband, the method comprising the steps of:
- tuning the passband of the transmit circuit such that a center of passband of the transmit circuit is set to a first frequency;
- and
- tuning the bandpass characteristics of the receive circuit such that a center of the passband of the receive circuit is set to a second frequency differing from the first frequency, wherein the second frequency is within the passband of the transmit circuit.
A contact hearing system comprising:
- a transmit circuit comprising a transmit coil positioned in an ear tip, the transmit circuit having a first bandpass characteristic, wherein the transmit circuit is tuned such that a center of the first bandpass characteristic is set at a first frequency;
- a receive circuit comprising a receive coil positioned on a contact hearing device, the receive circuit having a second bandpass characteristic, wherein the receive circuit is tuned such that a center of the second bandpass characteristic differs from the center of the first bandpass characteristic;
- and
- wherein the receive circuit is tuned such that the center of the second bandpass characteristic is tuned to a frequency which is lower than the first frequency and is within the first bandpass characteristic of the transmit circuit.
A method of tuning a transmit circuit and a receive circuit, wherein the transmit and receive circuit form components of a contact hearing system, the transmit circuit having a bandpass characteristic and the receive circuit having a receive bandpass characteristic, the method comprising the steps of:
- tuning the bandpass characteristics of the transmit circuit such that a center of the transmit bandpass characteristic is set to a first frequency;
- and
- tuning the bandpass characteristics of the receive circuit such that a center of the receive bandpass is set to a second frequency differing from the first frequency, wherein the second frequency is lower than the first frequency, and wherein the second frequency is within the transmit bandpass characteristic of the transmit circuit.
Dependencies are inferred from the claim text.