Determines how the noise in each box is found NOI.BOX_TYPE
"
noi.box_size"
) is found by taking Fourier
transform of the residuals in each box and then using the mean power in the range 2 to 10
Hz as the noise. If it is non-zero, the noise for each residual is set to the variance of the
neighbouring residuals in a box centred on the residual. Using this scheme causes the noise
values to vary continuously with time, whereas the FFT scheme produced blocks of equal
noise values. When using a small box size, "
noi.box_type=1"
will often result in far fewer
samples being flagged as unusable. Note, if "
noi.box_size"
is set to zero, then the value of
"
noi.box_type"
is ignored and the noise is always calculated on the basis of the mean
power in the 2 to 10 Hz band. [1]