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Signal processing

All-pass filter

Filter that passes signals of all frequencies with same gain, but changes the phase relationship among various frequencies

Analog-to-digital converter

System that converts an analog signal into a digital signal

Band-pass filter

Filter that rejects signals outside a certain range

Signal used to represent data as a sequence of discrete values

Digital-to-analog converter

Device that converts a digital signal into an analog signal

Filter (signal processing)

Device or process that removes unwanted components or features from a signal, or enhances wanted ones, or both

High-pass filter

Filter that passes signals with a frequency higher than a certain cutoff frequency, and attenuates signals with lower frequencies

Lattice phase equaliser

Type of signal processing filter

Low-pass filter

Type of signal filter

Mechanical filter

Type of signal processing filter

Method of combining multiple signals into one signal over a shared medium

Noise (electronics)

Random fluctuation in an electrical signal

Nyquist–Shannon sampling theorem

Sufficiency theorem for reconstructing signals from samples

Instrument for displaying time-varying signals

Sampling (signal processing)

Measurement of a signal

Signal processing

Academic subfield of electrical engineering

Signal-to-noise ratio

Ratio of the desired signal to the background noise