What does loopback plug actually mean? Find out inside PCMag's comprehensive tech and computer-related encyclopedia.

A Bluetooth pulse code modulation (PCM) lookback test primarily verifies the functionality of the Bluetooth chip’s PCM ...

We make it sound as if we use Loopback every day — in one way we do. Every time we do any audio work, Loopback is now in the mix somewhere.

If you need to bundle two or more OS X audio sources to pass as input into another program, Rogue Amoeba's Loopback provides a simple, hack-free method.