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Response error estimates for FIR digital filters with floating point coefficients

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2 Author(s)
Horrocks, D.H. ; Sch. of Electr., Electron. & Syst. Eng., Wales Univ., Cardiff, UK ; Bull, D.R.

Response error estimates are derived for direct-form FIR (finite impulse response) digital filters having low-pass, high-pass, and bandpass characteristics. Simple-to-apply formulas are obtained on the basis of two observations: first, that the discontinuous relationships between a floating can be replaced by a continuous approximation; and secondly, that in the classes of filter considered, the impulse response possesses a closed form. Formulas that show the effect of wordlength, filter order, and filter bandwidth are derived. Simulation studies that confirm these estimates are reported

Published in:

Acoustics, Speech, and Signal Processing, 1989. ICASSP-89., 1989 International Conference on

Date of Conference:

23-26 May 1989