How to generate variable sine wave after fixed number of samples

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guduguntla sai shankar 2016-2-21

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https://ww2.mathworks.cn/matlabcentral/answers/269262-how-to-generate-variable-sine-wave-after-fixed-number-of-samples

评论： guduguntla sai shankar 2016-3-6

i have to generate a sine wave increasing its frequency about 50khz after certain periods(like it should generate 25 periods of 50 khz and 25 periods of 100khz and go on...) until 1Mhz. Thanks in Advance

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采纳的回答

Azzi Abdelmalek 2016-2-21

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https://ww2.mathworks.cn/matlabcentral/answers/269262-how-to-generate-variable-sine-wave-after-fixed-number-of-samples#answer_210665

在 MATLAB Online 中打开

np=25
f=50
t=0:T/10:T;
y=sin(2*pi*f*t);
for k=1:19
  f=f+50;
  T=1/f;
  t1=t(end)+T/20:T/20:t(end)+np*T;
  y1=sin(2*pi*f*t1);
  t=[t t1];
  y=[y y1];
end
plot(t,y)