Telecoil system periodic interference canceller
AssigneeStarkey Laboratories, Inc.
InventorsThomas O. Monsen, Justin R. Burwinkel, Kenneth Kragh Jensen
Life of this patent
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Abstract
Disclosed herein, among other things, are systems and methods for removing periodic interference from a telecoil signal for ear-wearable devices. A method includes receiving a signal from a telecoil of a hearing device, and determining a base period of periodic interference present in the signal. The signal is divided into clip samples having a clip length based on the base period, and the clip samples are used to create an averaged clip of the periodic interference. The averaged clip of periodic interference is inverted and summed with the signal to cancel the periodic interference from the signal, and audio from the summed signal is played for a wearer of the hearing device.
Claims27
A method, comprising:
- receiving a signal from a telecoil of a hearing device;
- determining a base period of periodic interference present in the signal;
- dividing the signal into clip samples having a clip length based on the base period;
- using the clip samples to create an averaged clip of the periodic interference;
- inverting the averaged clip of periodic interference;
- summing the inverted averaged clip with the signal to cancel the periodic interference from the signal;
- and
- playing audio from the summed signal for a wearer of the hearing device.
A hearing device, comprising:
- a magnetic sensor configured to receive an inductive input;
- and
- at least one processor and data storage in communication with the at least one processor, wherein the data storage comprises instructions thereon that, when executed by the at least one processor, causes the at least one processor to:
- receive a signal from magnetic sensor;
- determine a base period of periodic interference present in the signal;
- divide the signal into clip samples having a clip length based on the base period;
- use the clip samples to create an averaged clip of the periodic interference;
- invert the averaged clip of periodic interference;
- sum the inverted averaged clip with the signal to cancel the periodic interference from the signal;
- and
- play audio from the summed signal for a wearer of the hearing device.
Dependencies are inferred from the claim text.