Sawtooth or triangle wave
sawtooth(t) generates a sawtooth
wave with period 2π for the elements of time
sawtooth(t) is similar
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 2π and to increase linearly
with time with a slope of 1/π at all other
a modified triangle wave where
width, a scalar
parameter between 0 and 1, determines the point between 0 and 2π at
which the maximum occurs. The function increases from –1 to
1 on the interval 0 to 2π ×
width, then decreases linearly from
1 to –1 on the interval
2π. Thus a parameter of 0.5 specifies a standard
triangle wave, symmetric about time instant π with
peak-to-peak amplitude of 1.
sawtooth(t,1) is equivalent
Generate 10 periods of a sawtooth wave with a fundamental frequency of 50 Hz. The sample rate is 1 kHz.
T = 10*(1/50); Fs = 1000; dt = 1/Fs; t = 0:dt:T-dt; x = sawtooth(2*pi*50*t); plot(t,x) grid on
Plot the power spectrum.