Brickwall Limiter
Definition
A limiter configured to prevent any signal from exceeding a defined ceiling under any circumstances. Unlike a standard limiter, a brickwall limiter applies extreme, instant gain reduction to guarantee the output never exceeds the set maximum — at the cost of potential transient distortion at high settings.
In Simple Terms
A limiter that absolutely, unconditionally prevents audio from exceeding a set ceiling. Nothing gets through above that line — period. It's the last safety net in mastering before your file goes out to the world.
In Practice
A brickwall limiter set to -0.3 dBTP is the final processor in a mastering chain, ensuring the delivered file meets platform true peak requirements with absolute certainty.