FIR Filter Coefficient Quantization

We demonstrate the effects of coefficient quantization in Finite Impulse Response (FIR) filters using several examples. Then, we discuss what options you have to improve your FIR filter design, given limited-precision coefficients. Finally, we develop a rule-of-thumb for estimating the required coefficient precision, and lay out a set of guidelines for working interactively with ScopeFIR or another FIR filter design tool to arrive at an optimal limited-precision FIR filter design for your application.