You will need use a computer with attached headphones (which I will supply).
Do Exercises 13.1, 13.2, 13.3,
13.6, and 13.7. For each exercise, you will write a function with an appropriate argument (see
hints on each exercise for details). For exercises where you answer a question, you can just put
your answer in the comments in your function.

Playing sounds is easy in Matlab. If you have a vector of sound samples
*x* sampled at frequency *fs*, you can play it as follows:
`sound(x, fs)`