Frequency transformations on low roundoff noise digital filter realizations

Author

Sanz-Gonzalez, J.L. ; Herranz-Tor, Juan C. ; Calero-Perez, Elolsa

Author_Institution

Univ. Politecnica de Madrid, Spain

fYear

1991

Firstpage

371

Abstract

A comparison is made of roundoff noise power of Butterworth, Chebyshev, and elliptic low-pass, bandpass, and bandstop digital filters realized in parallel and cascade forms (optimal against direct second-order sections) and implemented with fixed-point and floating-point numbers. The authors only compare l₂-scaled structures. It is found that both numerical representations have similar noise-to-signal ratios, taking into account similar overflow probabilities and the same register wordlengths

Keywords

band-pass filters; band-stop filters; cascade networks; digital filters; roundoff errors; Butterworth filters; Chebyshev filters; bandpass; bandstop; cascade forms; digital filter realizations; direct second-order sections; elliptic low-pass; floating-point numbers; l₂-scaled structures; noise power; noise-to-signal ratios; numerical representations; overflow probabilities; register wordlengths; roundoff noise; Band pass filters; Cutoff frequency; Digital filters; Low pass filters; Noise level; Random processes; Signal analysis; Signal processing; Signal to noise ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrotechnical Conference, 1991. Proceedings., 6th Mediterranean

Conference_Location

LJubljana

Print_ISBN

0-87942-655-1

Type

conf

DOI

10.1109/MELCON.1991.161854

Filename

161854