PLOTTING TWO CYCLES SINE WAVE

Hi,

I need some help for a project. I need to plot TWO cycles, frequency of 1khz sine wave with an amplitude of 5v. I'm using time as [0:2] but im not sure that's correct.

please help.

Answer 1

[Mohamad]

f0=1000 ; % sinusoid frequency in Hz 
fs=50*f0; % sampling frequency
dt=1/fs; % sampling interval
duration=0.01 ; % duration = 0.01 seconds , which means this duration has 10 cycles  
t=0:dt:duration-dt ; % time vector
sig=5*sin(2*pi*f0*t); % sinusoidal signal duration 0.01 seconds 
plot(t(1:fs*2/f0),sig((1:fs*2/f0))) ; % plot of 2 cycles of the sinusoidal signal 
grid

[Steven Bedoya]

thanks alot.

[Mohamad]

Ok , please Accept the answer .

[Muhammad Adnan Liaquat]

𝑦 = 2 𝑠𝑖𝑛( 𝜔𝑡) for 𝑓 = 40 (two cycles only) I want to drwa this please help me

Answer 2

[Mohamad]

Hi , sorry for being late as I jsut saw the reply , run the code , accept the answer , thanks

%% generate and plot 2 sin(wt)
%% f= 40 Hz
f =40 ; % Sinusoid freuqncy
T=1/f; % Cycle durtation
fs=50*f; % Sampling frequency
dt=1/fs; % Sampling interval
t=0:dt:2*T-dt; % Time vector for 2 cycles 
signal=2*sin(2*pi*f*t); % The required signal 
plot(t,signal,'LineWidth',2) ; grid ; xlabel(' Time in Seconds ' ) ; ylabel ('Amplitude ' )
ylim([ -2.2 2.2])

[Muhammad Adnan Liaquat]

Thanks brother but it's too late....