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 ...

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.