EPOCH 
MASK ifnot=N2
RESTRUCTURE
FILTER bandpass=0.3,35 ripple=0.02 tw=1 fft
ARTIFACTS mask
CHEP-MASK ep-th=3,3,3
CHEP epoch
RESTRUCTURE
PSD spectrum
SPINDLES fc=11,15 annot=spindles per-spindle
WRITE-ANNOTS file=spindles-^.txt annot=spindles
