Wi-Fi--The Nimble Musician in Your Laptop

It turns out that modern Wi-Fi radios are nimble musicians too, except that they generate radio waves rather than audio waves, and they are much, much faster. The integration of computer engineering and wireless technology, Wi-Fi gives every laptop its own "nimble musician" to send and receive data. A Wi-Fi radio applies computer science to the task by mathematically computing what the waveform would look like if we had actually built all those precision oscillators. The computer technology is known as digital signal processing, and the computation algorithm is known as the fast Fourier transform