BUCHI NIRCal User Manual
Page 110
NIRCal 5.5 Software Manual
110
NIRCal 5.5 Manual, Version A
Formula:
Type
This pretreatment is not depending on the calibration wavelengths.
NOTE
More sensitive to noise than Savitzky-Golay 1st derivative, can be combined with smoothing (before or
after).
1st Savitzky-Golay 9 points
More useful for spectra with very sharp absorption bands with high noise spectra, for detecting very
small wavelength shifts.
Formula:
Savitzky-Golay derivative works with orthogonal polynoms (here cubic)
Type
This pretreatment is not depending on the calibration wavelengths.
Literature:
Savitzky, Golay Analytical Chemistry Vol. 36, No. 8, July 1964, p.1627-1639, "Smoothing and
Differentiation of Data by Simplified Least Squares Procedures"
NOTE
This cited paper contains some errors in some coefficients.