The effects of coefficient quantization to the response of a digital filter are studied. Easy-to-use expressions for the required coefficient word length, with which the filter response deviations are within specified bounds, are derived for filters realized with floating-point or logarithmic arithmetic. The required coefficient word lengths of floating-point and fixed-point realizations of filters are compared with simulations.<
Published in:
Signal Processing Letters, IEEE
(Volume:1
,
Issue:
3
)
Date of Publication: March 1994