Some of the features of these pages (namely “canvas” and “slider”) are new in HTML 5. Your browser must be up-to-date. By slider, I mean a GUI control that you drag back and forth to set a number. If it is rendered like this
you are OK. (This one is just a picture, it won’t actually work.) If the blue knob is missing and there is just a text field to type in, a lot of the interactivity of the Web page will be missing.
These web pages illustrate graphically some of the interesting ideas in digital signal processing. The basic idea is that they follow a plan, and you go through them from first to last, using the links at the top or bottom of the pages. This is a good idea if you haven’t seen them before.
But you can also visit them in arbitrary order. In the section below, there are links for each page, so you can jump to them directly.