glossary
Two meters can read the same signal and move differently because they are measuring with different timing.
Meter ballistics describe the attack, release, averaging window, and display smoothing of a meter. They control how quickly the meter reacts to changes in level.
A peak meter jumps quickly to catch transients. A VU-style meter moves slower and shows something closer to perceived body or average level.
Fast ballistics help you avoid clipping. Slower ballistics help you judge level balance, density, and whether a vocal or bass line is sitting consistently.
LUFS meters add their own time windows, so momentary, short-term, and integrated loudness will all tell different but useful stories.
Do not expect one meter to solve every decision. Use fast peak or true peak readings for ceiling safety, then use RMS, VU, or LUFS windows to understand musical level.
When a meter feels jumpy or lazy, check what timing it is designed around before changing the mix.