Technology
Signal Sampling
Quick fact
The Nyquist-Shannon sampling theorem states that to accurately reconstruct a signal without distortion, the sampling rate must be at least twice the highest frequency component present in the signal. For CD-quality audio, that's 44,100 samples per second.
Why this is interesting
You've probably recorded audio on your phone without thinking about it. But did you know that the sound you hear from a digital recording is actually a series of snapshots taken thousands of times per second?