Butterworth lim shortcomings
Butterworth lim yog kev tsim cov hom kev lim dej, zoo ib yam li Chebyshev lim, nws muaj kev ua haujlwm siab, qis qis, seev hla-hla, siab dhau, band-nres thiab lwm yam lim. Nws muaj lub zog ruaj khov-zaus ntawm cov yam ntxwv sab hauv thiab sab nraud ntawm daim ntawv hla, tab sis muaj qhov hloov mus ntev, uas yooj yim los cuam tshuam hauv thaj chaw hloov chaw. Thaum hu rau Butterworth lim hauv MATLAB, lub teeb liab yuav ib txwm ua thawj. Lub sijhawm hloov kho me ntsis. Tab sis qhov ntuas-zaus cov yam ntxwv yav tom ntej yog qhov zoo heev.