Method, device and computer program product for filtering an EMG signal out of a raw signal
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United States of America Patent
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Dec 15, 2009
Grant Date -
Jun 7, 2007
app pub date -
Nov 18, 2004
filing date -
Nov 19, 2003
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Abstract
In a method, device and computer program product for extracting an EMG signal out of a raw signal obtained with a number of electrodes, the electrodes being adapted to interact with a patient to obtain signals from the patient's diaphragm on respective channels associated with the electrodes, a signal-to-noise-ratio is determined for the raw signal in each channel, and a weighting factor is automatically determined dependent on the signal-to-noise ratio. The respective raw signals from the channels are weighted according to the weighting factors, and are summed in order to generate a sum signal that represents the total EMG signal contained in all of the raw signals.
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