Noise Control Simulators

Link cancellation waveform, convergence history, and residual spectrum to see how step size trades speed for stability.

Predict the noise radiated by multirotor UAVs — consumer quadcopters, industrial inspection drones, delivery UAS and eVTOLs — from blade passage frequency (BPF) and a sp…

A tool that predicts the insertion loss of a lined HVAC duct silencer using the Sabine empirical formula.

Design an expansion-chamber muffler that quietens sound not by absorbing it but by reflecting it back. Adjust the chamber-to-pipe area ratio, the chamber length and the …

Calculate sound pressure level (SPL) vs. distance for point & line sources using ISO 9613-2, including atmospheric absorption, barrier loss, and ground effects.

Calculate noise barrier insertion loss in real time using the Maekawa diffraction formula. Visualize geometry and view the full frequency spectrum.

Calculate combined noise from up to 5 sources with distance, atmospheric, and A-weighting corrections for point or line sources.

ISO 9613-2 compliant noise mapping software. Model point sources, barriers, and ground effects to generate real-time 2D noise contour maps and Lden calculations.

Calculate noise levels with our real-time dB tool for SPL, distance, A-weighting, and source combination. Compare decay curves and source dominance.

Compute the radiated sound power level L_W of a machine using the ISO 3744 free-field engineering method.

Calculate how much quieter a point sound source becomes as you move away from it.