Most of us first encounter frequency-specific dynamic processing in a de-esser, and this works by combining a compressor with a task-specific EQed side chain. However, there is another way of making threshold-based frequency changes and it’s called a dynamic EQ.
A dynamic EQ is an EQ processor that includes threshold-dependent parameters to determine whether a particular band is boosted or cut. In practice, this means we can compress or expand specific frequencies, although the mechanism used isn’t the same as a typical compressor, so explaining it in this way can be slightly confusing.
