noise_spectrum - plot(F,X), xlabel('frequency / f s') grid;

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clear all, close all, clc; n = [0:149]; x1 = randn(150,1);sound(x1);pause N = 2048; X = abs(fft(x1,N)); X = fftshift(X); F = [-N/2:N/2-1]/N;
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Unformatted text preview: plot(F,X), xlabel('frequency / f s') grid; title('Approximate Spectrum of a Sinusoid with the FFT');...
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