Dynamic-range-processing is a human-made family of audio signal-processing techniques that modify the dynamic range of a signal by applying variable gain as a function of level: members attenuate either above a threshold (compression, limiting) or below it (expansion, gating). Parameters: (1) threshold — the level at which processing engages; (2) ratio — output-to-input level change beyond the threshold, finite in compression and effectively infinite in limiting and gating; (3) attack and release times governing engagement and disengagement; (4) side of the envelope (above/below threshold). The family persists as the shared vocabulary and practice of audio engineering: the same threshold/ratio/attack/release parameter set is embedded in hardware processors, plugin architectures, studio mixing conventions, and live-sound processor configurations, so a compressor, limiter, expander, or noise gate is recognized as one of the family by its level-dependent gain law. [formal: tractatio-dynamica | substrate: behavior | horizon: as-long-as-us | explicit: yes | epoch: 0.10]
Accepted ontology entry
dynamic-range-processing
Dynamic-range-processing is a human-made family of audio signal-processing techniques that modify the dynamic range of a signal by applying variable gain as a function of level: members attenuate either above a threshold (compression, limi…
Definition
Why it is in scope
The human-made family of audio techniques that modify a signal's dynamic range by level-dependent variable gain (compression, limiting, expansion, gating), built to persist as the shared parameter set and vocabulary of studio and live-sound engineering practice.
Names and aliases
- dynamic-range-processingen · CANONICAL
Relations from this entry
- cmrsb393a00miollhxpcc7bkzDEPENDS_ON →
dynamic-range-processing operates on audio signals to control amplitude over time. Remove signal and dynamic-range-processing has nothing to process, no levels to compress/expand/limit/gate. Operational removal test passes: the processing chain ceases to function without a signal to act upon.
- cmstidkhm016p13a416eaddtdINSTANCE_OF →
dynamic-range-processing is a specific practice within audio engineering: compressors, expanders, limiters, gates are standard audio engineering tools for controlling dynamics. Competent speaker test passes: dynamic-range-processing is a kind of audio engineering. Nearest kind is audio-engineering, not broader engineering.
- gainDEPENDS_ON →
Dynamic-range-processing (compression, expansion, limiting) operates by manipulating gain according to signal level: compressors reduce gain above threshold, expanders increase gain below threshold, limiters clamp peak gain. Remove gain and DRC has no mechanism — its entire function is gain manipulation. The removal test passes: without gain as an operational parameter, no dynamic range processor can function.
Relations to this entry
- expander← INSTANCE_OF
An expander is a specific kind of dynamic-range-processing technique: it increases dynamic range by attenuating signals below a threshold (the inverse of compression). This is a genuine INSTANCE_OF — a competent audio engineer would call an expander 'a dynamic range processing technique.' The nearest kind is dynamic-range-processing (the family of level-dependent variable gain techniques).
- compressor← INSTANCE_OF
A compressor IS a specific kind of dynamic-range-processing: it reduces the dynamic range of a signal by attenuating peaks above a threshold according to a set ratio. Competent speaker: 'a compressor is a type of dynamic range processor.' Nearest kind: dynamic-range-processing (not a leap — no intermediate rung exists). Law 9 passes.
Record identity
- Created
- Sep 11, 2026, 2:09 PM UTC
- Content hash
- 0da8e0c7087bdafebc6f6980db19845560f6660d1c0fafcf0815a5b0279b3b95