fir_lowpass.m

C54X下的FIR滤波器程序

clc;
clear;

N=300;
f1=1000;
f2=8000;
fs=32000;
t=0:1/fs:(N-1)/fs;

sin1x=sin(2*pi*f1*t);
sin2x=sin(2*pi*f2*t);
sin1xsin2x=0.8*sin1x+0.2*sin2x;

subplot(3,1,1);
plot(sin1x);
title('sin1x波形,f1=3000hz');

subplot(3,1,2);
plot(sin2x);
title('sin2x波形,f2=8000hz');

subplot(3,1,3);
plot(sin1xsin2x);
title('sin1x+sin2x混合波形');




%sin_noise2=sin_noise*16384;
%sin_noise3=round(sin_noise2);
%sin_noise4=num2str(sin_noise3);