Plot sine wave with bandwidth

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Vick
Vick 2017-12-2
评论： Image Analyst 2017-12-2
Hi,
I want to create a sine wave with a given bandwidth, a plot similar to this,
Say my frequency is 20Hz, amplitude is 20 and bandwidth is 4.

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回答（1 个）

Image Analyst
Image Analyst 2017-12-2
How about just using the formula for sine:
x = linspace(......
y = 20 * sin(2*pi*20*x);
  2 个评论
Vick
Vick 2017-12-2
Hi, This will give me uniform sine wave how about specifying the bandwidth? my fc=20kHz; f2-f1=4kHz. I'm also interested in having sine plot similar to the below image where the bandwidth is not in a square form.
Image Analyst
Image Analyst 2017-12-2
A sine wave does not have a bandwidth. The bandwidth is zero because it's a single frequency. To get something with a bandwidth that's not zero, you'd have to have something different than a pure sine wave.

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