Simple Explanation

How loud or strong an audio signal is at any given point in a system.

Concise Technical Definition

A term used to describe the relative strength or amplitude of an audio signal, typically measured in decibels (dB).

Layman-Friendly Analogy

Like turning a faucet—low flow means low level, high flow means high level.

Industry Usage Summary

Refers to signal amplitude at various stages (e.g., mic level, line level, speaker level) in audio systems; critical for proper gain staging, headroom, and avoiding distortion or noise.

Engineering Shortcut

Signal amplitude measured in dB; affects gain, headroom, and distortion.

Full Technical Explanation

Levels in audio refer to the strength or amplitude of an audio signal, usually expressed in decibels (dB). Proper level management is essential in audio systems to maintain clarity, prevent distortion, and optimize headroom. Levels are categorized depending on the signal stage—mic level (very low voltage), line level (standard for most equipment), and speaker level (high power output for driving speakers). Monitoring levels helps in gain staging, where each component in the signal chain is set to operate within its optimal range. Mismatched or poorly managed levels can introduce noise, clipping, or loss of fidelity. Tools like VU meters, peak meters, and digital readouts are used to monitor and calibrate audio levels.