Ambient noise canceling physiological acoustic monitoring system and method
AssigneeGeneral Electric Company
InventorsRussell C. Ward, Parry W. Heide, Bruce E. Dammann
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Abstract
The present invention is an ambient noise canceling physiological acoustic monitoring system and method. The system and method utilizes a plurality of microphones to collect input data including ambient noise signals, bed frame noise signals and patient respiratory and cardiac data signals. The system and method cancels the ambient noise and bed frame noise signals, and calculates a filtered audio output signal with an algorithm that utilizes ECG rhythm patterns and impedance pneumography. The set of input data and the filtered audio output signal are then displayed in real time.
Claims19
A method of canceling noise with a physiological acoustic monitor, the method comprising:
- collecting a set of input data from a set of input microphones, including acquiring a patient audio signal with a patient microphone of the set of input microphones, and acquiring an ambient noise signal with an ambient microphone of the set of input microphones;
- canceling a bed frame noise signal and the ambient noise signal from the patient audio signal;
- calculating a filtered audio output signal;
- and
- displaying the filtered audio output signal and the set of input data on a display.
A physiological acoustic monitoring system for canceling noise, the system comprising:
- a set of input microphones configured to collect a set of input data, the set of input microphones comprising a patient microphone configured to acquire a patient audio signal and an ambient microphone configured to acquire an ambient noise signal;
- a processor configured to receive the set of input data, wherein the processor cancels a frame noise signal and the ambient noise signal from the patient audio signal, further wherein the processor calculates a filtered audio output signal;
- and
- a display configured to receive the filtered audio output signal and the set of input data, and further configured to display the filtered audio output signal and the set of input data in real time.
A physiological acoustic monitoring system, the system comprising:
- a patient microphone that acquires a patient audio signal;
- a bed frame microphone that acquires a bed frame noise signal;
- an ambient microphone that acquires an ambient noise signal;
- a processor configured to receive the patient audio signal, the bed frame noise signal, and the ambient noise signal, the processor filters the bed frame noise signal and the ambient noise signal from the patient audio signal to produce a filtered audio output signal;
- and
- an output device that conveys the filtered audio output to a clinician.
Dependencies are inferred from the claim text.