- (; Digital-to-Analog Converter, DAC) , - s(tn), , s(t), s(tn), , .
( - ), .
, , : , - .
- . , - ( ):
d(t-t) = 0 t ¹ t,
d(t-t) dt = 1.
d(t-t) , , , . - t, , 1.
- . , , , t = t , .. . , 1, , - ( ), - .
- . (t-t) q, 1/q, 1. q , , , 1, . q Þ 0 - . d(t-t) t = t, , () 1. t = t, ( , ..) , 1.
- . , - d(t-t) - , t -, ..:
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f(t) d(t-t) dt = f(t).
t.
. :
t=0 1, .
. , , ,
s(t) = s(t) - s(t-T),
0-, .
. Dt. - - d(kDt-nDt), 1 k = n, . d(kDt-nDt) Dt = const, k n, .
d(t-t) d(kDt-nDt) . , , , t nDt, , , , -¥ ¥.