Given c1, a curve is created which is the original curve
windowed using the Hanning window function.
Comments
The resultant vector is vec_expr multiplied by the Hanning window
function. This function is given by:(1)
Where, w is the windowing function and N is the number of elements of
vec_expr. Windowing functions are normally used in
conjunction with frequency operations. A Hanning window function is shown below. Figure 1.
The resulting curve is power-normalized, in other words, the root mean square (RMS)
of the original curve equals the RMS of the resulting curve. The mean is subtracted
from the input before windowing in order to eliminate DC bias.
