Methods and system for processing an EMG signal
AssigneeKoninklijke Philips N.V.
InventorsRene Martinus Maria Derkx, Sandrine Magali Laure Devot
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Abstract
A method for generating a filtered EMG signal includes obtaining a combined signal, wherein the combined signal comprises an ECG signal and an EMG signal. A first high pass filter is applied to the combined signal and an ECG model signal is generated, based on the high pass filtered combined signal. The method further includes, generating a partially filtered EMG signal by subtracting the ECG model from the high pass filtered combined signal. A second high pass filter is then applied to the partially filtered EMG signal to generate a second EMG signal and to the ECG model signal to generate a second ECG model signal. A filtered EMG signal is generated based on the second EMG signal and the second ECG model by way of a gating technique.
Claims19
A method for generating a filtered EMG signal, the method comprising:
- obtaining a combined signal, wherein the combined signal comprises an ECG signal and an EMG signal;
- applying a first high pass filter to the combined signal;
- generating an ECG model signal based on the high pass filtered combined signal;
- generating a first EMG signal based on at least one of the ECG model signal and the high pass filtered combined signal;
- applying a second high pass filter to the first EMG signal to generate a second EMG signal and to the ECG model signal to generate a second ECG model signal;
- generating the filtered EMG signal based on the second EMG signal and the second ECG model by way of a gating technique;
- and
- generating a clinical parameter from the generated filtered EMG signal;
- wherein the gating technique comprises:
- computing the root mean square, RMS, of the ECG model signal;
- computing a binary gating signal based on the RMS of the ECG model signal;
- and
- gating the second EMG signal using the binary gating signal.
A controller for generating a filtered EMG signal in an EMG measurement system, wherein the controller is adapted to:
- obtain a combined signal, wherein the combined signal comprises an ECG signal and an EMG signal;
- apply a first high pass filter to the combined signal;
- generate an ECG model signal based on the high pass filtered combined signal;
- generate a first EMG signal based on at least one of the high pass filtered combined signal and the ECG model signal;
- apply a second high pass filter to the first EMG signal to generate a second EMG signal and to the ECG model signal to generate a second ECG model signal;
- and
- generate the filtered EMG signal based on the second EMG signal and the second ECG model by way of a gating technique;
- and
- generate a clinical EMG parameter from the generated filtered EMG signal;
- wherein the gating techniques comprises:
- computing the root mean square, RMS, of the ECG model signal;
- computing a binary gating signal based on the RMS of the ECG model signal;
- and
- gating the second EMG signal using the binary gating signal.
A controller for generating a filtered EMG signal in an EMG measurement system, wherein the controller is adapted to:
- obtain a combined signal, wherein the combined signal comprises an ECG signal and an EMG signal;
- apply a first high pass filter to the combined signal;
- generate an ECG model signal based on the high pass filtered combined signal;
- generate a first EMG signal based on at least one of the high pass filtered combined signal and the ECG model signal;
- apply a second high pass filter to the first EMG signal to generate a second EMG signal and to the ECG model signal to generate a second ECG model signal;
- and
- generate the filtered EMG signal based on the second EMG signal and the second ECG model by way of a gating technique;
- and
- generate a clinical EMG parameter from the generated filtered EMG signal;
- wherein the gating techniques comprises:
- computing the root mean square, RMS, of the ECG model signal;
- computing a binary gating signal based on the RMS of the ECG model signal;
- and
- gating the second EMG signal using the binary gating signal.
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