Abstract

This study proposes the Perceptual Attenuation Field (PAF), a theoretical model grounded in long-term microtonal sound practice combined with systematic temporal and spatial modulation through delay and reverberation. The model is developed by a musician and sound researcher working from sustained phenomenological observation within private studio practice and immersive acoustic environments, and is presented explicitly as a conceptual and theoretical contribution rather than a clinical or neuroscientific one.

The model is built on the predictive processing and active inference account of brain function, in which perception is understood as the continuous generation and updating of internal models of the world, with prediction errors weighted according to their estimated precision, or reliability (Friston, 2010; Hohwy, 2013; Clark, 2016; Parr, Pezzulo, & Friston, 2022). Within this framework, PAF proposes that the coordinated modulation of frequency (microtonality), time (delay and related temporal techniques such as modulation, pitch-shifting, and granular processing), and space (reverberation) reorganizes the structure of perceptual prediction by redistributing predictive density away from sharply bounded events and toward sustained perceptual continuity.

This redistribution is consistent with independent, peer-reviewed findings across each axis: research on atonal and highly uncertain musical contexts shows measurable, dissociable changes in the confidence and precision-weighting of listeners’ pitch expectations (Mencke et al., 2019, 2021, 2022); auditory cortex has been shown to adapt its receptive fields to reverberant environments in a manner consistent with active dereverberation (Ivanov, King, Willmore, Walker, & Harper, 2022); and the established phenomenon of sensory attenuation demonstrates that precision-weighted prediction of expected sensory input measurably reduces its perceptual salience (Kiepe, Kraus, & Hesselmann, 2021). PAF proposes that these mechanisms, individually documented within their own experimental paradigms, converge structurally within an integrated acoustic architecture.

The Perceptual Attenuation Field is defined as a structurally integrated acoustic configuration in which frequency modulation, temporal extension, and spatial diffusion converge to attenuate the dominance of discrete perceptual segmentation while retaining its own internal statistical structure rather than collapsing into unstructured noise, even as fine-grained, event-level detail is necessarily reduced. Within such environments, perceptual organization is hypothesized to shift from event-centered anticipation toward field-based continuity.

This work is a theoretical framework, not a report of empirical findings specific to PAF: no experiment has yet tested the integrated model as such. It is offered as a conceptually rigorous, empirically informed proposal intended to seed future interdisciplinary collaboration between sound practice, perceptual theory, and cognitive science.

Keywords: predictive processing, active inference, microtonality, sensory attenuation, perceptual continuity