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4-4.html
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4-4.c
#include "stdio.h"
#define StackSize 100 //假定预分配的栈空间最多为100个元素
typedef int DataType;//假定栈元素的数据类型为字符
typedef struct{
DataType data[StackSize];
int top;
}SeqStack;
// 置栈空
voi
4_4.htm
Untitled Document
4.4
4-4.htm
var isnMonth = new
Array("1月","2月","3月","4月","5月","6月","7月","8月","9月","10月","11月","12月");
var isnDay = new
Array("星期日","星期一","星期二","星期三","星期四","星期五","星期六","星期日");
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4-4.m
%例程4－4 基于巴特沃斯模拟滤波器设计数字带通滤波器
Wp=[0.3*pi,0.4*pi];
Ws=[0.2*pi,0.5*pi];
Ap=3;
As=18;
[N,wn]=buttord(Wp/pi,Ws/pi,Ap,As); %计算巴特沃斯滤波器阶次和截止频率
[b,a]=butter(N,wn,'bandpass'); %频率变换法设计巴特沃斯带通滤波器