Title :
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
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;
Conference_Titel :
Electrotechnical Conference, 1991. Proceedings., 6th Mediterranean
Conference_Location :
LJubljana
Print_ISBN :
0-87942-655-1
DOI :
10.1109/MELCON.1991.161854
