Topical Terminology > Quad Chroma
Quad Chroma
For Quad Chroma we have a term and definition in Multimedia.
Quad Chroma (Multimedia) 
Quad chroma refers to a technique where the sample clock is four times the frequency of the color burst. For NTSC this means that the sample clock is about 14.32 MHz (4 x 3.579545 MHz), while for PAL the sample clock is about 17.73 MHz (4 x 4.43361875 MHz). The reason these are popular sample clock frequencies is that, depending on the method chosen, they make the chrominance (color) decoding and encoding easier.
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