adaptive threshold filter

combinative threshold filter

filter threshold

Integral threshold

multi-scale threshold filter

threshold filter

wavelet soft-threshold filter

wavelet threshold filter

integral filter

RC integral filter

active power filter filter

Choquet Integral Defined by Lebesgue-Stieltjes Integral

adaptive spatial-temporal-spectral filter(ASTS filter)

band elimination filter band suppression filter

band suppression filter band elimination filter

band-rejection filter (=band elimination filter)

composite filter beds biological aerated filter

DBGF filter (deep-bed glass fibre filter)

filter paper filter