3rd order loop filter

filter order number

fractional order Poisson filter

High order filter network

High order harmonic filter

higher order low-pass filter

hybrid filter order

nth order active filter

Order Filter

order morphological filter

order morphology filter

order statistics filter

rank order filter

second order filter

Second order nonlinear interpolation filter

(The symbol is abbreviated) filter

acoustical filter

Acoustic Wave Filter

acoustic optical tunable filter