Cardiac and vascular noise cancellation for pulsatile tinnitus
AssigneeThe Regents of the University of California
InventorMatthew Amans
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Abstract
A system for cancelling an internally generated noise includes a processing device disposed on a patient. The processing device includes a sensor configured to record a pulse sound waveform generated by a pulse of the patient and at least one waveform processing circuit configured to output a cancellation sound waveform based on the recorded pulse sound waveform. The system also includes a sound output device coupled to the processing device. The sound output device is configured to output the cancellation sound waveform to cancel or minimize the pulse sound waveform corresponding to the internally generated noise.
Claims19
A system for cancelling an internally generated noise, comprising:
- a processing device disposed on a patient, the processing device including:
- a sensor configured to record a pulse sound waveform generated by a pulse of the patient wearing the processing device;
- and
- at least one waveform processing circuit configured to output a cancellation sound waveform based on the recorded pulse sound waveform, wherein the at least one waveform processing circuit includes a time delay circuit configured to shift the recorded pulse sound waveform by a predetermined time period to account for a time delay between a time the pulse is generated to a time the pulse is heard by the patient;
- and
- a sound output device coupled to the processing device, the sound output device configured to output the cancellation sound waveform to cancel or minimize the pulse sound waveform corresponding to the internally generated noise.
A method for cancelling an internally generated noise, comprising:
- recording a pulse sound waveform generated by a pulse of a patient at a sensor disposed on the patient wearing a processing device;
- generating a cancellation sound waveform using at least one waveform processing circuit based on the recorded pulse sound waveform, wherein the at least one waveform processing circuit includes a time delay circuit configured to shift the recorded pulse sound waveform by a predetermined time period to account for a time delay between a time the pulse is generated to a time the pulse is heard by the patient;
- and
- outputting the cancellation sound waveform at a sound output device to cancel or minimize the pulse sound waveform corresponding to the internally generated noise.
Dependencies are inferred from the claim text.