generating time vector for noisy sine wave

Question

Sahdev Patel 2020-9-10

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/591391-generating-time-vector-for-noisy-sine-wave

编辑： Xavier 2020-9-10

I want to generate a vector signal with 4 cycles of 1kHz sinewave at a sampling frequency of 44.1kHz and an amplitude of 1V .Plot the signal on the screen and label the X and Y axes with the correct labels. can you plese correct the " t ". thank you.

fs= 44.1e3; % given sampling frequency

ts=1e3; % time period of each cycle

t=0:ts/fs:ts/4; % total time to wave

A= 1; % amplitude

x=A*sin(2*pi*t); % Generation of sine wave

plot (t,x) % Plotting of sine wave

xlabel ('Time period');

ylabel ('Amplitude')

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Answer 1

Xavier 2020-9-10

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https://ww2.mathworks.cn/matlabcentral/answers/591391-generating-time-vector-for-noisy-sine-wave#answer_492427

编辑：Xavier 2020-9-10

在 MATLAB Online 中打开

%%Sine wave:
    Fc = 1e-3;                        % hertz
    %%Time specifications:
    Fs = 44.1e3;                      % samples per second
    dt = 1/Fs;                        % seconds per sample
    nWavelengths = 4;
    StopTime = (1/Fc) * nWavelengths; % seconds
    t = (0:dt:StopTime-dt)';          % seconds
      x = sin(2*pi*Fc*t);
      
   % Plot the signal versus time:
   figure;
   plot(t,x);
   xlabel('time (us)');
   title('Signal versus Time');
   zoom xon;
   