Sample the sinc function at given points
A vector of x-axis points at which the sinc function will be sampled.
If TRUE, a normalized sinc function is returned.
The formula for the unnormalized sinc function is y = sin(x)/x.
The formula for the normalized sinc function is y = sin(x*pi)/(x*pi).
A vector containing y-axis values for each specified x-axis value is returned.
Santiago Barreda <[email protected]>
Lyons, R. G. (2004). Understanding Digital Signal Processing (2nd ed.). Prentice Hall.
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x = seq(-20,20,.1) ## generate both forms of the sinc function between -20 and 20 y1 = sinc (x) y2 = sinc (x, normalized = TRUE) ## the unnormalized sinc function has zero crossing at ## integer multiples of pi plot (x,y1, type = 'b') ## the normalized sinc function has zero crossing at integers lines (x,y2, type = 'b', col = 4) abline (h = 0)
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