The Most Important Formula For Car Interiors

Okay you engineers and math heads do you know what this formula is used for? This formula is known as the "Fourier Transform." As Wired explains

Sounds are waves. The Fourier Transform analyzes a given wave, and produces the equivalent of its audio opposite. When that's played, the two more or less cancel out, muffling your audio environs.

[Source: via Gizmodo]