How to plot binary sine function?

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NoYeah
NoYeah 2020-4-8
评论： NoYeah 2020-4-9
binary sine function change its amplitude to minus after a peirod
for example) T=3, Range 0~6
y=sin(t/3) for 0<=t<3
y=-sin(t/3) for 3<=t<6
it reculsively occurs for whole range
6~9, 15~18, ....
9~12, 18~21, ....
how to plot this graph?

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采纳的回答

Akira Agata
Akira Agata 2020-4-8
How about modulating a phase with 0 <-> pi ?
The following is an example:
T = 3;
time = linspace(0,T*4,1000);
% Create a phase 0 <-> pi
binary = mod(floor(time/3),2) == 1;
phi = pi*binary;
% Plot a phase modulated signal
figure
plot(time,sin(2*pi*(1/T)*time + phi))

更多回答（1 个）

David Hill
David Hill 2020-4-8
t=0:.01:30:
y=sin(2*pi*t/3).*(-1).^floor(t/3);%I think you are missing the 2*pi
plot(t,y);
  3 个评论
显示 1更早的评论
David Hill
David Hill 2020-4-8
It works fine for me, floor is never fractional.
NoYeah
NoYeah 2020-4-9
yes but if you set floor set fractional, the result may not correct

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