COSC 120 WI14  Inlab 3/19

(1) load handel

(2) sound(y, Fs)

(3) add various amounts of noise to y and see what it sounds like.
When is the noise too much to recognize the music?

noise = randn(length(y), 1) * 0.10;

Play the noisy signal with
sound(y+noise, Fs)

(4) plot the original sound samples and the just barely too noisy samples on the same graph,
appropriately labeled (axes, legend with amount of noise)

(5) Make a sound track twice as long by appending y to y

(6) On the original y, see if you can decrease the volume in the last
10000 samples by decreasing the amount of the y values in the
last 10000 samples.