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Raspberry Pi 的代码
sin_wav.m
% sin_wav.m: 子程序，产生正弦波。
% 参数：周期T1，谐波次数Kh，初相位phs，采样点数,N。
function x=sin_wav(T1,Kh,phs,N)
pi=3.1415926535897932;
T1=1;
Kh=1;
N=2*10^3;
phs=0;
h=T1/N;
w=Kh*h*2*pi/T1;
fai=phs-w;
for i=1:N
f.m
function f=f(x)
n=size(x);
I=ones(n);
f=(I+(x./2).^2).^2*pi;
gngauss.m
function grsv=gngauss(m,sgma)
if(nargin==0),
m=0; sgma=1;
elseif nargin==1
sgma=m; m=0;
end;
u=rand;
z=sgma*(sqrt(2*log(1/(1-u))));
u=rand;
grsv(1)=m+z*cos(2*pi*u); grsv
4-7.txt
/* 范例：4-7 */
#include
#include
void main()
{
char name[20];
char sex;
int age;
float pi;
printf("请输入您的姓名：");
scanf("%s",name); /* #1 */
printf("请输入您的性别(
rsd_cos.m
% Function to compute raised cosine and derivatives
%
function [x,x_dot,x_ddot,x_dddot] = rsd_cos(t)
x_cos = .5*(1+cos(2*pi*t));
x = x_cos.*pls_fn(t);
x_dot = -pi*sin(2*pi*t).*pls_fn(t);
x_ddot = -2*
dtransform.m
%dtranform.m 数字滤波器设计，从低通到其他类型滤波器的频率对应关系
%具体的坐标频率转换公式参见《数字信号处理》第二版 丁玉美，高西全, 西安电子科技大学出版社
function [out0,out1]=dtransform(w,string)
%下面的参数为设计滤波器时给定的参数
wu=0.7*<mark>pi</mark>;
wl=0.5*<mark>pi</mark>;
wc=0.4*<mark>pi</mark>; %最终设计的低 ...
fm.m
function y = FM(x,beta)
[r, c] = size(x);
if r*c == 0
y = [];
return;
end;
if (r == 1)
x = x(:);
len = c;
else
len = r;
end;
Df = 2*pi*beta*100;
x = interp(x,20)
music_1.txt
clear;
d=1;
M=8;
N=2;
lma=2;
sam=200;
q=[20,40];%信源方向
A=exp(-2*pi*j*d*[0:M-1]'*sin(q*pi/180)/lma);
n=1:sam;
v1=1000000000000;
v2=3000000000005;
SNR=10;
Am=10^(SNR/20);
signal=Am*[cos(v1*n
music_2.txt
clc
clear
close
signalnum=2;
SNR1=10;
SNR2=20;
theta1=10;
theta2=40;
SA1=sqrt(2*10^(SNR1/10));
SA2=sqrt(2*10^(SNR2/10));
theta1=theta1*pi/180;
theta2=theta2*pi/180;
jay=sqrt(-1);
c=1500;l
mrpi.c
/*
* MIRACL calculate pi - by Gauss-Legendre method
* mrpi.c
*
* Copyright (c) 1988-2001 Shamus Software Ltd.
*/
#include
#include "miracl.h"
#ifdef MR_FLASH
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