This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Window function hamming.svg Window function and frequency response Hamming alpha svg Hamming window and frequency response Own Bob converted to SVG by Alessio Damato source full resolution org hamming author org BobK Matlab commands dr cos pi sum noise bandwidth bins abs fft zeros fftshift log max drH figure area