MATLAB program for Coswave signal Generation

Cosine Wave:

Cosine waves and sine waves are identical except for a phase or time shift of 90 degrees, which means 90/360 (or one fourth) of the basic waveform. Sine waves have a value of 0 at time=0, and cosine waves have a value of +1 at time=0.

y(t) = A cos (wt + ɸ  )

where;

     A, the amplitude, is the peak deviation of the function from its center position.

     ω, the angular frequency, specifies how many oscillations occur in a unit time interval, in

          radians per second

     ɸ, the phase, specifies where in its cycle the oscillation begins at t = 0.

Cosine Wave can be obtained by using the following formulae

x=cos(2*pi*fi*n)

MATLAB Code:-

Cosine Wave:

T=input ('Input time of the Sinusoidal signal= ');

fi=input ('Input Frequency of the Sinusoidal signal= ');

n =0:0.01:T;

X=cos(2*pi*fi*n);

stem(n,X);

%plot(n,X)

title('input Squence');

xlabel('Time n');

ylabel('Amplitude');

Output waveform:

Input time of the Sinusoidal signal= 1

Input Frequency of the Sinusoidal signal= 4