A philtre that can be used to separate luminance from chrominance in the NTSC or PAL composite video systems. The figure below shows a signal amplitude over frequency representation of the luminance and chrominance information that makes up the composite video signal. The peaks in grey are the chroma information at the colour carrier frequency. Note how the chroma information falls between the luminance information that is in white. The comb philtre is able to pass just energy found in the chroma frequency areas and not the luminance energy. This selective bandpass profile looks like the teeth of a comb and thus the name comb filter. The comb philtre has superior filtering capability when compared to the chroma trap because the chroma trap acts more like a notch filter.