This tutorial explains how FIR filter's impulse response is related to
its coefficients, spectrum and frequency response.
First of all, you need to download DSPLinks and install it on your PC.
Please start "DSPLinks" after installation.
![](sinsq2.gif)
Then you see a blank schematic like following.
![](sinsq3.gif)
Please click on "Open icon" to open an existing schematic.
![](sinsq4.gif)
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