What is a Signal Flow?

Signal flow refers to the path that an audio signal takes as it moves through different pieces of audio equipment from the original sound source to the final output.

In a recording or sound system, the signal might begin with a microphone or instrument, then pass through devices such as preamps, mixers, audio interfaces, effects processors, and amplifiers before reaching speakers, headphones, or a recording device.

Understanding signal flow is essential in audio production because it helps engineers and producers correctly route audio signals, troubleshoot problems, and optimize the sound throughout the recording, mixing, and playback process.