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Comment on "Roundoff Noise and Attenation Sensitivity Digital Filters with Fixed-Point Arithmetic

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1 Author(s)

The relation between roundoff noise and attenuation sensitivity in digital filters with fixed-point arithmetic given in a letter by Fettweis (A Fettseis, IEEE Trans. Citcuit Theory, Vol. CT-20, pp. 174-175, March 1973) is found to be overly simplified. Some examples where the preceding relation does not hold are given along with a tentative explanation.

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IEEE Transactions on Circuits and Systems  (Volume:21 ,  Issue: 6 )