4 ms·
> This is why CD audio has 44.1 sampling rate - common divisor for fitting 3 samples per line of video in both 50 and 60 field rates. Indeed. Naively multiplyi
by s_gourichon 5y ago
> This is why CD audio has 44.1 sampling rate - common divisor for fitting 3 samples per line of video in both 50 and 60 field rates.
Indeed. Naively multiplying the line frequency (15734Hz in NTSC, 15625 in PAL) by 3 doesn't fit, but if some room is made to make a really valid video signal, which implies 50 or 60 gaps per second, and some logic to play samples at correct point in time, then it fits.
Ref: https://en.m.wikipedia.org/wiki/44,100_Hz https://en.m.wikipedia.org/wiki/44,100_Hz