DSP Sawtooth sawtooth and Square square wave MATLAB production (M2.2)

tags: Signal processing matlab Digital signal processing

x = sawtooth(t,xmax)Generate a serrated sequence, there are two parameters, wherein the second parameter XMAX can be omitted.

This function cycle is 2 π 2\pi 2π, T is the time scale sequence, XMAX is a scale scaling coefficient, between 0 and 1, default is 1, the default amplitude is from -1 to +1 zigzag rising.

x = square(t,duty)Similar to the SawTooth function, the cycle is 2 π 2\pi 2π, T is a time scale sequence, and DUTY is a duty cycle.

The actual use code is as follows:

A = input('The peak value =');%Peak7
L = input('Length of sequence =');%Sequence length100
N = input('The period of sequence =');%Sequence repetition cycle13
FT = input('The desired sampling frequency =');%Sampling frequency20000
DC = input('The square wave duty cycle = ');%Waveform duty cycle60
% Create signals
T = 1/FT;%Sampling interval
n = 0:L-1;%Sequence serial number
x = A*sawtooth(2*pi*n/N);%A serrated wave generating cycle N
y = A*square(2*pi*(n/N),DC);%Production cycle is N, a square wave for duty cycle
% Plot
subplot(211)
stem(n,x);
ylabel('Amplitude');
xlabel(['Time in ',num2str(T),'sec']);
subplot(212)
stem(n,y);
ylabel('Amplitude');
xlabel(['Time in ',num2str(T),'sec']);

Results Map:

The above is a sawtooth wave, which is a square wave (digital sampling signal) amplitude is 6, duty cycle is 60%.

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