A Direct Acoustic Scaling Model of DNA: Mapping Molecular Mass to Uniform Structural Resonance

Traditional DNA sonification frameworks frequently rely on arbitrary parameter mapping to convert genetic text into western musical scales for aesthetic convenience. This paper introduces a deterministic, interdisciplinary sonification methodology rooted entirely in the unmanipulated physical properties of the nitrogenous bases. By applying a direct 1:1 acoustic scaling factor where 1 Dalton (Da) of molecular mass equates to 1 Hertz (Hz) of frequency, and normalizing the range to a standard audible octave, we establish a natural biological pitch spectrum. We demonstrate that calculating the exact physical midpoint of this operational domain (131.12 Hz) and anchoring it directly to Middle C (C4) resolves the bases into a highly cohesive, conjunct musical scale: Cytosine maps to A3, Thymine to B3, Adenine to C#4, and Guanine to D4. Furthermore, we provide mathematical proof that the aggregate mass of complementary base pairs is virtually invariant (>99.62% uniformity), indicating that the macro-structure of the DNA double helix acts as a physical acoustic drone. On a micro-structural level, the bonding of these rungs creates a systematic alternating harmonic dialogue between foundational open resonance (C–G Perfect 4ths) and complex kinetic friction (A–T minor 2nds). This framework removes human nomenclature bias from genetic audio rendering, offering a physically grounded acoustic mapping that may support future work in auditory sequence analysis and mutation detection, which remains to be tested.