Signal Processing Toolbox

sawtooth

Generate a sawtooth or triangle wave

Syntax

• x = sawtooth(t)
  x = sawtooth(t,width)
  

Description

sawtooth(t) generates a sawtooth wave with period 2 for the elements of time vector t. sawtooth(t) is similar to sin(t), but creates a sawtooth wave with peaks of -1 and 1 instead of a sine wave. The sawtooth wave is defined to be -1 at multiples of 2 and to increase linearly with time with a slope of 1/ at all other times.

sawtooth(t,width) generates a modified triangle wave where width, a scalar parameter between 0 and 1, determines the point between 0 and 2 at which the maximum occurs. The function increases from -1 to 1 on the interval 0 to 2*width, then decreases linearly from 1 to -1 on the interval 2*width to 2. Thus a parameter of 0.5 specifies a standard triangle wave, symmetric about time instant with peak-to-peak amplitude of 1. sawtooth(t,1) is equivalent to sawtooth(t).

See Also

chirp, cos, diric, gauspuls, pulstran, rectpuls, sin, sinc, square, tripuls

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