What is Perceived Loudness?

Perceived Loudness is the way humans experience the intensity of sound, taking into account how our ears and brain interpret audio rather than just its measured level. It is known for reflecting how loud something actually feels to a listener.

The concept typically depends on factors such as frequency balance, duration, dynamics, and the sensitivity of human hearing, which can make certain sounds seem louder even at the same amplitude.

Perceived Loudness emphasizes human perception, meaning two signals with identical peak levels can be experienced as very different in loudness.

It is often evaluated using measurements like LUFS, which are designed to approximate how humans hear sound more accurately than simple peak or RMS values.

Today, Perceived Loudness is essential in mixing, mastering, and broadcasting, valued for ensuring audio translates consistently and comfortably across different playback systems and listening environments.