::Sampling (signal processing)


Sampling::audio    Samples::video    Signal::digital    Title::nyquist    Sample::sampling    Digital::audio

Signal sampling representation. The continuous signal is represented with a green colored line while the discrete samples are indicated by the blue vertical lines.

In signal processing, sampling is the reduction of a continuous signal to a discrete signal. A common example is the conversion of a sound wave (a continuous signal) to a sequence of samples (a discrete-time signal).

A sample is a value or set of values at a point in time and/or space.

A sampler is a subsystem or operation that extracts samples from a continuous signal.

A theoretical ideal sampler produces samples equivalent to the instantaneous value of the continuous signal at the desired points.

Sampling (signal processing) sections
Intro   Theory    Practical considerations   Applications    Undersampling    Oversampling    Complex sampling    See also    Notes    Citations   Further reading   External links