CODEWITHSUNDEEP
matlabaudioplotsignal-processingsignals
sj755
sj755

Reputation: 4062

Plotting a sound signal

I have a sound file, which I'll call sndfile.wav. So far I have determined the number of samples, sampling rating, and the length in seconds.

[f,Fs] = wavread('mike.wav');
N = length(f);
slength = N/Fs;

Given that f is the vector containing the samples from the sound file, Fs is the sampling rate, N is the number of samples, and slength is the length of the sound file in seconds, how can I plot the sound signal with respect to time in seconds.

Upvotes: 1

Views: 24071

Answers (2)

Navan
Navan

Reputation: 4477

moorepants answer is good for plotting the signal. If you want to do more to the signal after viewing take a look at the "Simple Audio Editor" available at file exchange. http://www.mathworks.com/matlabcentral/fileexchange/19873-simple-audio-editor

It can read an audio file directly and display it. You can also play the signal and do cut,copy and paste with the audio signal.

Upvotes: 2

moorepants
moorepants

Reputation: 1869

Make a time vector and then plot it versus f. 

t = linspace(0, N/Fs, N)
plot(t, f)

Upvotes: 7

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