What is EQ?

Using the cheesiest graphics available, this video describes what an Audio EQ device or plugin does. This is not a video that explains what the typical settings for an EQ are. This video is for someone who doesn't know what an EQ is, and wants someone to lay it out for them, assuming they know nothing about it. This video will give you the context to understand all the other videos out there on how to use EQ effectively.