A new ordering method for FIR filters based on finite word length effect on moments of impulse response
A. Khare, Toshinori Yoshikawa · 2003
The effect of the finite word length on the moment of the impulse response of a digital filter is investigated. It is shown that the quantization error in the moment values is almost linear with a slope of 3 dB/b and is well related to the output roundoff noise. An algorithm is also proposed to order the cascade sections of a finite impulse response (FIR) filter with low output roundoff noise.>