The applet below shows the Discrete Time and Continuous Time Frequency Transforms of a function f(t) = (0.6 * sin(w1t) + 1.4 * sin(w2t))/2.

Eg parameters:-

(3.0, 8.0, 1.81, 12.07, 50, NA, 50, 10.0, 0.4), for frequencies up to w

Increasing w2 to 16rad/s shows the CTFT has lines at 3 and 16rad/s while the DTFT has lines at 3, 14, 16 and 27rad/s. Between 0 and w

Increasing w2 to 29rad/s shows the CTFT has lines at 3 and 29rad/s while the DTFT has lines at 1, 3, 27 and 29rad/s. Between 0 and w

© 2007 Cuthbert A. Nyack.