Outdoor Heat-Pump Property-Line dBA Noise & Acoustic Shield Designer

Deterministic ISO 9613-2 hemispherical directivity Q (2/4/8 surfaces) + inverse-square spreading + Maekawa Fresnel-number barrier diffraction engine (.svg, .pdf, .json) built for Vaillant, Panasonic, Mitsubishi Electric, NIBE — zero-upload ephemeral Wasm RAM execution.

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