xinhaoyuna_1.m

给出了数字信号处理课程设计的基本程序

clear all
figure();
y1=zhengxian(1,28.1,32);subplot(4,2,1);stem(y1,'.');title('F=28.1');
             subplot(4,2,2);stem(abs(FFT(y1,32)),'.');%正弦信号
y1=zhengxian(1,30.3,32);subplot(4,2,3);stem(y1,'.');title('F=30.3');
             subplot(4,2,4);stem(abs(FFT(y1,32)),'.');%正弦信号
y1=zhengxian(1,32.5,32);subplot(4,2,5);stem(y1,'.');title('F=32.5');
             subplot(4,2,6);stem(abs(FFT(y1,32)),'.');%正弦信号            
y1=zhengxian(1,32,32);subplot(4,2,7);stem(y1,'.');title('F=32');
             subplot(4,2,8);stem(abs(FFT(y1,32)),'.');%正弦信号
             figure();
y1=zhengxian(1,33,32);subplot(4,2,1);stem(y1,'.');title('F=33');
             subplot(4,2,2);stem(abs(FFT(y1,32)),'.');%正弦信号
y1=zhengxian(1,35.5,32);subplot(4,2,3);stem(y1,'.');title('F=35.5');
             subplot(4,2,4);stem(abs(FFT(y1,32)),'.');%正弦信号
y1=zhengxian(1,64,32);subplot(4,2,5);stem(y1,'.');title('F=64');
             subplot(4,2,6);stem(abs(FFT(y1,32)),'.');%正弦信号            
y1=zhengxian(1,128,32);subplot(4,2,7);stem(y1,'.');title('F=128');
             subplot(4,2,8);stem(abs(FFT(y1,32)),'.');%正弦信号