In this chapter, you will need the following:

- In Exercise 5:
 You have to find the individual notes in a simple piece of music. You can find here some music in the file, or just five seconds of it in the file Both are in a compact format readable by MatLab via 'auread'.

- In Exercise 8:
 You need images to segment 1D slices. Here is an example of a range image. You can find more range images on the Brown Range Image Database: . Such images have very clear discontinuities at the edges of objects.