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clear all
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close all
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pkg load signal
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[y,fs] = audioread('modulator22.wav');
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audiowrite('outmodulator22.wav',y,fs/2);
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n = length(y);
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t=0:1/fs:(n-1)/fs; % time range
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downsample(y,4000);
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spectrogram(y,fs,5,30);
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[power,duration]=frequencySpectrum(y, fs, false); |