y = rand(10000,1) ; % some random signal
Fs = 1100 ; % som frequency
save demo.mat ; % save the data into .mat file
clear y Fs % remove the variables
load demo.mat ;
filename = 'handel.wav';
audiowrite(filename,y,Fs);
[y,Fs] = audioread('handel.wav');
sound(y,Fs);
% clear sound
