Fan of creative technology, elearning, instructional design and a little geeky

Posts tagged history

Nyquist’s Theorem

Amazingly this law of sound dates back to 1928: "for a digital system to reproduce the entire frequency range of human hearing—20 to 20,000 Hz—then the system has to sample the incoming signal at two times the highest input frequency, or 40 kHz. This doubled figure is known as the sampling rate or sampling frequency"