How to plot WAV file

john_smith45 asked: 2021-12-13 plot , time domain , frequency domain , wav

Learn how to plot WAV audio files in MATLAB with our step-by-step guide! Visualize your audio data, analyze sound waves, and gain insights. Start plotting your

Expert Answer

John Williams answered . 2025-07-29 20:34:51

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)));

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