Two signals, x0(t) and xw(t). x0(t) is a sine wave, and xw(t) is a window function of width2π:xw(t)=u(t)−u(t−2π){\displaystyle x_{w}(t)=u(t)-u(t-2\pi )\,}
x0(t)=sin⁡(t){\displaystyle x_{0}(t)=\sin(t)\,}
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