GMIS - Acoustic Calculator

GMIS - Acoustic Calculator delivers fast, consistent, field‑grade computations for acousticians and environmental noise professionals. What's inside: • Fundamentals: Wavelength, Frequency, Speed of Sound, Acoustic Delay, Directivity Index, Doppler Effect, Acoustic Impedance, Blade Pass Frequency, Bragg's Law, Coincidence Frequency, Mach Number, Noise Exposure & Allowed Time, Needed/Potential Acoustic Gain. • Decibel tools: dB calculator; SPL / SWL / SIL; Weighting Converter (dBZ ↔ dBA ↔ dBC). • Quantifying noise: Ldn, Lden, SEL, NPL for standardized assessment. • Outdoor propagation: SWL↔SPL (full/spherical/hemispherical), distance attenuation; point/line/plane source models; barrier attenuation. • Room Acoustics: Reverberation Time (RT60) with material catalog & frequency chart; Room Mode Calculator with 3D visualizer. • Resonators: Helmholtz, Perforated Panel, Slotted Panel, Wood Slats & Membrane Panel resonance frequency calculators. Designed for experts: fast input, metric units, field‑first UX. One‑time purchase, no ads, offline logic.