How to plot WAV file
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Hello,
I'd like to plot .wav file in time and frequency domain.
采纳的回答
Wayne King
2011-11-23
If this is the output of wavread, then see if you have two channels in y
[y,fs] = wavread(filename);
If y is two-channels, Nx2, then just plot one:
y = y(:,1);
dt = 1/fs;
t = 0:dt:(length(y)*dt)-dt;
plot(t,y); xlabel('Seconds'); ylabel('Amplitude');
figure
plot(psd(spectrum.periodogram,y,'Fs',fs,'NFFT',length(y)));
10 个评论
Wayne King
2011-11-23
so are these saved in a .wav file as two channels? one for the right ear and one for the left?
If so, then just do
yright = y(:,1);
yleft = y(:,2);
or however it is.
Daniel Shub
2011-11-24
@John, Pardon the yelling: THE MIT KEMAR HRTFS ARE NOT GIVEN FOR THE RIGHT AND LEFT EARS. Please read the documentation about how they recorded the HRTFS.
Maurel
2015-12-29
Hi !! thanks for your helpful post. I wonder if the unit is volt or mV ? Please can you confirm me that the unit of the amplitude axe is in Volt (or mV) ? thank !!
muhammad faiz
2017-12-4
hi sorry, but why it display "Undefined function or variable 'wavread'." after i run this coding "[y,fs] = wavread(filename);" ??
Florian Schüling
2018-1-25
try: [y,fs] = audioread ('Filename')
maithri kodakandla
2019-2-12
thank you :)
Natalie Phillips
2019-3-24
Hello Wayne King,
Could you explain the variables and why you put them in the format you did? If you can explain your code with comments that would be helpful.
Thank you,
Natalie
Eshaan Goyal
2020-10-7
what should be its xlabel and ylabel (for the graph which is plotted)
irtaza mazhar
2022-1-26
wht if channel is 1??
Anzzza
2022-2-9
when you have stereo audio, you got two channels. if you can, it's easier to work with one
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