Related Words

Chebyshev Filter: A filter that has some ripple in the pass-band but has an initial attenuation slope which is steeper than a Butterworth filter.

Machine-Learning Filters: Filters run by machines that determine whether to block email based on algorithms that point to whether the message is likely spam.

Neutral Density Filter: Describes a gray camera filter which has an equal opacity to all the colors of the spectrum and so does not affect the colors in the final image. It is used to reduce the amount of light ent . . . View Full Definition

Notch Filter: A special type of cut-only equalizer used to attenuate ( no boosting ) a narrow band of frequencies. Three controls: frequency, bandwidth and depth, determine the notch. Simplified units pro . . . View Full Definition

Oil Filter: An Oil Filter filters the oil in the engine. Changing the oil and oil filter is one task that many riders do for themselves. Consult your owner's manual for recommended intervals and oil wei . . . View Full Definition

Low Pass Filter: A network of components which attenuate all frequencies above a predetermined frequency selected by the designer. Frequencies below cut-off are passed without any effect.

Panchromatic Vision Filter: Filter through which the subject can be viewed approximately as it would appear in monochrome as recorded by a panchromatic emulsion.

Graduated Filter: Filter with a colored section, which gradually reduces in density toward the center of the filter. The rest of the filter is clear. Also referred to as a graduated filter

Heat Filter: Optical attachment made of thick infrared absorbing glass, used to absorb heat radiation from alight source without diminishing output.

High Pass Filter: An electronic filter of a type commonly incorporated in Crossover circuits that permits the passage of high frequencies while suppressing lower ones. The place in the frequency spectrum wher . . . View Full Definition