Filter used to eliminate chrominance (color) information from the luminance (brightness) information in a composite video signal. A notch filter or comb filter must be used to separate the color and brightness portions of a composite video signal where the two components have been combined into one signal. Of the two, a comb filter does this better than a notch filter. A notch filter has the negative effect of reducing the maximum number of horizontal lines and thus reducing resolution. It is also less effective at separating the color from the brightness portions of the video resulting in more distortions than a comb filter. Most higher quality video devices use comb filters instead of notch filters due to their inherent degradation and quality issues.