When NTSC color was introduced in 1953, the older rate of 60 fields per second was reduced by a factor of 1000/1001 to avoid interference between the chroma subcarrier and the broadcast sound carrier.
Would someone then explain to me why reducing this rate avoids interference between the chroma subcarrier and the broadcast sound carrier though?
Whats the reasoning behind it?
Name:
Anonymous2010-01-28 20:53
>>2
They changed it so the sound carrier would be exactly 1/2 harmonic off from the chroma.
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