spectrogram(sig, 256);
t = linspace(0, 4*n/fs, size(s,1));
f = linspace(0, fs/2, size(s,2));
figure;
imagesc...spectrogram(sig, 256, 255);
t = linspace(0, 4*n/fs, size(s,1));
f = linspace(0, fs/2, size(s,2));
figure;
imagesc...+ 1;
f = linspace(0, 150e3, f_len);
[s, f, t] = spectrogram(sig, window, noverlap , f, fs);
figure;
imagesc...在这里插入图片描述
最后再把功率谱密度的返回值加上
[s, f, t, p] = spectrogram(sig, window, nfft, f, fs);
figure;
imagesc(t,...noverlap = window/2;
nfft = window;
[s, f, t, p] = spectrogram(sig, window, noverlap, nfft, fs);
figure;
imagesc