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out = rms_emg (data, numPoints)
RMS_EMG Rectify and RMS an EMG signal.
OUT = RMS_EMG (DATA, NUMPOINTS) computes uses the data contained in DATA
and computes its RMS by squaring each data point, averaging NUMPOINTS / 2
points before and after the point to get a new value for the point, and then
taking the square root. If DATA is a matrix, each column is assumed to be
a channel of EMG.
NUMPOINTS + 1 are used if NUMPOINTS is even. IF NUMPOINTS is not entered, it
defaults to 51.
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