The microphone signals were treated electronically, and the resulting signals were sent to 116 loudspeakers positioned in the ceiling and under the balcony.

The microphone signals are further amplified and detected using lock-in amplifiers.

The DJ's microphone signal is routed to the compressor's sidechain so that whenever the DJ speaks the compressor reduces the volume of the music.

The individual microphone signals are routed to separate tracks.

These are typically used to carry microphone signals from one side of the stage to the other, or as an extension cable for a few channels on a larger stage box.

This involves using one or more microphones placed near the ear, and electronic circuitry which uses the microphone signal to generate an "antinoise" signal.

A microphone preamplifier is a sound engineering device that prepares a microphone signal to be processed by other equipment.

Echo cancellation is a signal-processing operation that subtracts the far-end signal from the microphone signal before it is sent back over the network.

Two pins are used for the mono headphone signal and two pins for the unbalanced microphone signal.

Professional video camera and microphone signals come into the production truck for processing, recording and possibly transmission.