Sinc Function
[Fourier Transform](https://texonom.com/fourier-transform-5ee1f9063a9743dd9846ddc600286d5a) [Box Filter](https://texonom.com/box-filter-0d975966a9474accb02603c75baafb0c) 


$$sinc(x) = \begin{cases}\frac{sinx}{x}, & \text{if } x  \ne 0\\1, & \text{if } x=0\end{cases}$$
$$sinc(\theta) = \frac{sin(\pi\theta)}{\pi\theta}$$


### [Fourier Transform](https://texonom.com/fourier-transform-5ee1f9063a9743dd9846ddc600286d5a) then [Rectangular function](https://texonom.com/rectangular-function-4d71deb4ffec44379df7cb97eb078dc9) 

 


 



