desibeliin

Desibeliin is a fictional unit of acoustic intensity used in speculative and entertainment literature, as well as in some game-design theory, to quantify sound levels in environments with extreme dynamic range. The term is derived from decibel with a fictitious suffix -iin, signaling an alternate scale.

Definition and measurement: In its imagined framework, one desibeliin is a logarithmic unit that corresponds to a fixed perceptual change described by the authors. It is defined with a reference level and weighting curve tailored to the setting; practical use involves calculating sound pressure or intensity relative to that reference, producing values in the 0–200 desibeliin range for typical scenes.

Origins and usage: The concept first appears in speculative engineering essays and certain science-fiction narratives published in the early 22nd century. It is sometimes used to model how living beings perceive loudness in new environments, or to design quiet habitats in space habitats and megastructures.

Reception and status: In real-world acoustics and standards bodies, desibeliin has no official status and remains a fictional construct. It is sometimes used as a didactic tool in discussions of perceptual models and as a world-building device in fiction.

See also: decibel, perceptual weighting, sound design.