dynamic-range-compression

Dynamic-range-compression is a specific kind of signal processing technique that modulates the amplitude envelope of a signal. A competent speaker would call it a signal processing method. Specific→general per Law 9.

Dynamic-range-compression measures signal amplitude to determine gain reduction. Remove amplitude as a concept and DRC loses its measurement target — it has nothing to compare against the threshold. The removal test passes: without amplitude, DRC cannot operate.

Dynamic range compression is a specific technique for reducing the amplitude range of a signal. A competent speaker would call DRC 'a compression method.' Direction tested: specific (DRC) → general (compression).

parallel-compression IS a specific kind of dynamic-range-compression technique: it applies compression to a copy of the signal and blends the compressed signal with the dry original. This is the nearest general kind.

Ducking is a specific kind of dynamic-range-compression: it reduces the level of one audio signal when a second signal exceeds a threshold. A competent audio engineer would call ducking a form of compression — specifically, sidechain-controlled compression. The sense pinned: ducking as a compression technique that modulates gain based on external signal presence, distinguishing it from ordinary compression which uses the same signal.

A compressor is the concrete device/algorithm instantiating the dynamic-range-compression technique: its accepted definition (threshold, ratio, attack time, release — variable gain reduction above threshold) is the technique's accepted definition ('measuring the amplitude envelope and applying variable gain when the signal exceeds a threshold') made into hardware/software. Law 9: a specific kind of the general technique. Same ladder shape as the ALREADY ACCEPTED rungs limiter INSTANCE_OF dynamic-range-compression and de-essing INSTANCE_OF dynamic-range-compression — a compressor with finite ratio is the middle member of that family. Nearest kind per Law 11e: dynamic-range-compression, not the discipline above it (the DRC→signal-processing rung already exists as accepted, so the ladder reads compressor → DRC → signal-processing).

A noise gate is a specific kind of dynamic range compression technique: it reduces dynamic range by attenuating signals below a threshold. In audio engineering, gates are classified under the dynamic range processing family alongside compressors and expanders. A competent speaker would call a noise gate 'a form of dynamic range compression/control.'

Limiting is DRC taken to its extreme: the same envelope-measuring, threshold-triggered variable-gain mechanism with an effectively infinite ratio and hard ceiling. DRC is the nearest kind — compression (data) is a different branch, and the limiter device already sits on this rung (limiter INSTANCE_OF DRC). Pinned sense: the dynamics-control process, not the hardware.

De-essing is a frequency-selective form of dynamic range compression — it reduces the dynamic range of specific frequency bands (sibilance). De-essing IS a specific kind of DRC, just narrow-band rather than full-band.