Modulatable

Modulatable is an adjective describing something that can be modulated—the process of varying a parameter over time or in response to an input. In technical contexts, a modulatable parameter or signal is one whose value can be controlled by a modulation source, such as an LFO, envelope generator, MIDI controller, or user automation.

In audio synthesis and music production, many parameters are modulatable. Common examples include oscillator pitch, filter cutoff frequency, resonance, amplitude, and effects mix. The routing of modulation sources to parameters is often organized in a modulation matrix or via modulation envelopes or steps, enabling dynamic timbre and expressive performance.

In electronics and signal processing, modulation refers to altering a carrier signal with a modulating signal. When a circuit or device exposes channels or controls that can be varied by a modulating signal, those channels or controls are modulatable. This concept underpins techniques such as amplitude modulation, frequency modulation, and phase modulation, where the carrier is continually adjusted by the modulating input.

In software and digital interfaces, modulatable controls can respond to automation or external inputs. For example, a synthesizer plugin parameter may be labeled modulatable, indicating it can be automated in a digital audio workstation or controlled by MIDI Continuous Controller messages.

Etymology and usage: from modulate + -able. The term is common across music technology and engineering, though it may be spelled modulable in some contexts. Related concepts include modulation, modulatory, and modulators.