Data segmenting with overlap and then multiplying each segment with hammond and rectangular window
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Hello! This is currently my code:
[x,fs1] = audioread('Male1.mp3');
z1=x-mean(x);
t=(1:N)/10000;
z=x-mean(x);
w1=hamming(N);
w2= rectwin(N);
y=z.*w1;
figure;
plot(t,z,'k',t,y,'r');
xlabel('Time (s)'); ylabel('Amplitude');
figure;
y1=z1.*w2;
plot(t,y1);
It plots, but I want to overlap the data into 50 and 100 ms long overlapping segments. Would I have to use a buffer function? I'm not too familiar with Matlab. Thank you!
6 个评论
Ryan Le
2020-11-23
Mathieu NOE
2020-11-24
hello
you can have a look at pwelch function to see how overlapping and windowing is done for fft spectral analysis
edit pwelch
Ryan Le
2020-11-24
I think I'm supposed to do it in time domain.
Mathieu NOE
2020-11-24
Yes, windowing applies on time domain , before you do fft
Ryan Le
2020-11-24
Mathieu NOE
2020-11-25
ok maybe I added some confusion in my last answers
the original question was simply to define overlapping sections of signal, not windowing and fft as with pwelch
回答（1 个）
Shubham Khatri
2020-12-7
0 个投票
Hello,
Hope it helps
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2020-12-7
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