代码搜索：3dB
找到约 123 项符合「3dB」的源代码
代码结果 123
www.eeworm.com/read/6855/101690
pdf 片状多层混合耦合器-3db混合.pdf
www.eeworm.com/read/454995/7380364
asv jichu_8.asv
%数据采样为1000Hz，设计6阶低通椭圆滤波器，阻带纹波为50db，通带滤波为3db，截止频率为300Hz
clear;clc;close all;
Fs=1000;
[b,a]=ellip(6,3,50,300/500);
freqz(b,a,512,1000);
www.eeworm.com/read/454995/7380376
m jichu_8.m
%数据采样为1000Hz，设计6阶低通椭圆滤波器，阻带纹波为50db，通带滤波为3db，截止频率为300Hz
clear;clc;close all;
Fs=1000;
[b,a]=ellip(6,3,50,300/500);
freqz(b,a,512,1000);
www.eeworm.com/read/482655/6620643
m hptransform.m
%高通滤波器的设计
w0=4; %cutoff frequency截止频率
%设计一个三极点，3dB波动的一型切比雪夫滤波器
[z,p,k]=cheb1ap(3,3);
[b,a]=zp2tf(z,p,k);
[b,a]=lp2hp(b,a,w0);
H=tf(b,a);
f=0:15/200:10;
w=2*pi*f;
bode(H,w);
www.eeworm.com/read/483133/6610831
m ideal_lp1.m
%函数 ideal_ip
function hd=ideal_lp1(wc,N);
%理想标准低通滤波器计算
%----------------------------------------------------------------------
%条件：已知3db通带截止频率和截取长度
%[hd]=ideal_ip(wc,N);
%hd为0到N-1之间的理想脉冲响应
%wc
www.eeworm.com/read/482655/6620640
asv chebyshev.asv
%切比雪夫滤波器chebyshev %%%和书上不一样，？？？，page351
[z,p,k]=cheb1ap(2,3); %通带内允许有3dB波动的2几点切比雪夫滤波器
%注意cheb1lap
[b,a]=zp2tf(z,p,k);
w=0:0.01:4;
H=tf(b,a);
bode(H,w);
www.eeworm.com/read/360606/10085311
m ex5_3.m
%
% This file generates the graph for Example 5.3
% In this example we compare the frequency response of
% three types of filters: Chebyshev with 3dB ripples,
% Butterworth, and linear ph
www.eeworm.com/read/154092/11989921
m ex5_3.m
%
% This file generates the graph for Example 5.3
% In this example we compare the frequency response of
% three types of filters: Chebyshev with 3dB ripples,
% Butterworth, and linear ph