**Electronic/World Wide Web>**

**Blog:**Bhatia, Aatish (NOV 06, 2013)

*, The Math Trick Behind MP3s, JPEGs, and Homer Simpson’s Face*, Nautilus Blog, Retrieved on 2013-11-07

**Folksonomies:**mathematics science writing

## Memes

07 NOV 2013

## Fourier Transformations

So what was Fourier’s discovery, and why is it useful? Imagine playing a note on a piano. When you press the piano key, a hammer strikes a string that vibrates to and fro at a certain fixed rate (440 times a second for the A note). As the string vibrates, the air molecules around it bounce to and fro, creating a wave of jiggling air molecules that we call sound. If you could watch the air carry out this periodic dance, you’d discover a smooth, undulating, endlessly repeating curve that’...**Folksonomies:**mathematics

**Folksonomies:**mathematics

It's like prism that breaks apart the components of a sound wave or image into it's smaller parts.