The simplest technique used to develop digital FIR filters is windowed filters. This technique is based on designing a filter using well-known frequency-domain transition functions called windows.

This technique is based on designing a filter using well-known frequency domain transition functions called “windows”. The use of windows often involves a choice of the lesser of two evils.

The design of finite impulse response (FIR) filters remains a cornerstone of digital signal processing, with ongoing efforts to refine both the algorithmic and hardware aspects of their ...