有没有会matlab的大神，帮帮忙写个代码。 有没有大神帮帮忙？！用matlab帮忙写一个可以做出来动态心...
\u6709\u6ca1\u6709\u5927\u795e\u4f1amatlab,\u505a\u4e00\u4e2a\u7269\u7406\u7684\u56fe\uff0c\u53ef\u4ee5\u5e2e\u6211\u5199\u4e00\u4e0b\u4ee3\u7801\u5417\u6211\u4f1a\uff0c\u505a\u4ec0\u4e48\u56fe\uff1f\u54ea\u9898\uff1f
\u7f51\u4e0a\u5e94\u8be5\u6709\u7684\uff0c\u6211\u523b\u6211\u4ee5\u524d\u4e5f\u627e\u8fc7\u8fd9\u4e2a\u4e1c\u897f
你有数据文件吗？发过来看看，我写个程序。clc
clear
Fs = 100;
load ep42
s=s';
figure
h = spectrum.welch;
psd(h,s,'Fs',Fs);%功率密度估计图
title('ep42文件功率密度估计')
[pxx,f] = pwelch(s,500,300,500,Fs);
figure
plot(f,10*log10(pxx)) %画频率谱
xlabel('Frequency (Hz)')
ylabel('Magnitude (dB)')
grid
title('ep42文件频率谱')
[s1,Fs1] = audioread('Noct1.wav');
%sound(s1,Fs1);
figure
h = spectrum.welch;
psd(h,s1,'Fs',Fs1);%功率密度估计图
title('Noct1功率密度估计')
[pxx,f] = pwelch(s1,500,300,500,Fs1);
figure
plot(f,10*log10(pxx)) %画频率谱
xlabel('Frequency (Hz)')
ylabel('Magnitude (dB)')
grid
title('Noct1频率谱')
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