Home  · Classes  · Annotated Classes  · Modules  · Members  · Namespaces  · Related Pages

NoiseFilter

Executes a Savitzky Golay or a Gaussian filter to reduce the noise in a MS experiment.

The idea of the Savitzky Golay filter is to find filter-coefficients that preserve higher moments, which means to approximate the underlying function within the moving window by a polynomial of higher order (typically quadratic or quartic) (see A. Savitzky and M. J. E. Golay, ''Smoothing and Differentiation of Data by Simplified Least Squares Procedures'').

The Gaussian is a peak area preserving low-pass filter and is characterized by narrow bandwidths, sharp cutoffs, and low passband ripple.


Generated Tue Apr 1 15:36:39 2008 -- using doxygen 1.5.4 OpenMS / TOPP 1.1