Samplers

``Sampling'' is also used for the process of recording audio into a wavetable then playing it out again.

A ``sample'' is also sometimes used (especially commercially) to refer to the the entire wavetable.

Suppose $x(n)$ is a one-second recording and is of length 44100.

• if $y(n)$ has a period of 22050 samples, it has a frequency of 2 Hz.
• the sound will be played back at double the speed.