... hạn12341112121,01, 287 20,5 089 1,01970 ,87 000 ,87 0000,414200,25990, 189 20, 189 21,01,01,9611,2621, 480 1, 480 0,50,50,50,5Bessel 12341112121,01,36170,75600,99961,33970,774300,6 180 00,47720, 488 90, 389 01,01,01,3231,4140,9 78 1,7970, 58 0,690,520 ,81 Butterworth ... 12341112121,01,36170,75600,99961,33970,774300,6 180 00,47720, 488 90, 389 01,01,01,3231,4140,9 78 1,7970, 58 0,690,520 ,81 Butterworth 12341112121,01,41421,01,01 ,84 78 0,765401,001,01,01,01,01,01,01,2720,7191,3900,711,00,541,31Suy ... 1dB12341112121,01,30222,21560,54422,59040,303901,551501,20574,13011,16971,01,00,4511,3530,5401,4170, 98 2,020, 78 3,56ChebyshevSuy giảm 3dB12341112121,01,06503,34960,35592, 185 30,196401,930501,19235,53391,20091,01,00,2991,3960,5571,4101,33,071, 08 5, 58 Từ...