Acoustics Simulators

Acoustic Beats Simulator — Two-Tone Interference and Beat Frequency

Sound Wave Physics

Acoustic Beats simulator: real-time waveform of two sine tones, beat frequency |f1-f2|, average frequency, beat period and maximum composite amplitude from f1, f2, A1, A2.

Acoustic Impedance Tube Simulator

Sound Wave Physics

Standing wave tube simulator for acoustics. Adjust frequency, tube length, and boundary conditions to visualize pressure distribution and resonance frequencies in real time.

Acoustic Impedance Reflection & Transmission Calculator

Sound Wave Physics

Calculate acoustic impedance, reflection/transmission coefficients, and loss instantly. Visualize wave behavior with animated diagrams for any two-medium interface.

Acoustic Resonance & Wind Instrument Simulator — Standing Waves in Pipes

Sound Wave Physics

Simulate acoustic resonance in wind instruments. Model standing waves in open/closed pipes and Helmholtz resonators. Adjust pipe length and harmonics for tone analysis.

Acoustic Standing Wave Simulator (Tube & Room Modes)

Sound Wave Physics

Visualize acoustic standing waves in tubes. Interactive simulator shows mode shapes, natural frequencies, and formulas for open, closed, and half-open resonators.

Room Acoustics Reverberation Time Calculator — Sabine & Eyring RT60

Room & Building Acoustics

Calculate RT60 reverberation time for any room. Input dimensions, materials, and target frequency to compare Sabine & Eyring formulas across 6 octave bands.

Active Noise Control FXLMS Simulator

Noise Control

Explore FxLMS active noise control attenuation and stability from target frequency, step size, filter length, and secondary-path delay.

Anechoic Chamber Low-Frequency Cutoff Simulator

Room & Building Acoustics

Anechoic Chamber Low-Frequency Cutoff Simulator: A design calculator for anechoic chambers: enter the chamber dimensions, wedge length, absorber density and …

Doppler Effect Simulator

Sound Wave Physics

Visualize the Doppler Effect in real-time. See sound waves compress and stretch, calculate observed frequency, and experience shock waves as a source moves.

Doppler Effect Simulator — Observed Frequency & Wavefront Animation

Sound Wave Physics

Doppler Effect Simulator: Adjust source velocity, observer velocity, and speed of sound to calculate observed frequency in real time. Three tabs — circular w…

Drone Quadcopter Noise Prediction Simulator

Noise Control

Drone Quadcopter Noise Prediction Simulator: Predict the noise radiated by multirotor UAVs — consumer quadcopters, industrial inspection drones, delivery UAS…

HVAC Duct Silencer Attenuation Simulator

Noise Control

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

Echo Delay & Distance Calculator

Sound Wave Physics

Calculate echo delay and reflection distance by setting delay time and temperature parameters. Essential tool for ultrasonic testing and acoustic measurement.

Helmholtz Resonator Simulator — Acoustic Resonance

Sound Wave Physics

Helmholtz resonator simulator: real-time resonant frequency, effective neck length, wavelength and period from cavity volume, neck diameter, neck length and sound speed.

Loudspeaker Thiele-Small Parameters Simulator

Electroacoustics & Audio

Compute the Thiele-Small parameters — the "blueprint" of a moving-coil loudspeaker driver.

Microphone Array Beamforming (Delay-and-Sum) Simulator

Electroacoustics & Audio

Microphone Array Beamforming (Delay-and-Sum) Simulator: Design a uniform linear microphone array that emphasises sound from one direction by aligning and sum…

Muffler Transmission Loss Simulator

Noise Control

Muffler Transmission Loss Simulator: Design an expansion-chamber muffler that quietens sound not by absorbing it but by reflecting it back. Adjust the chambe…

Music Chord Harmonics Visualizer

Electroacoustics & Audio

Music Chord Harmonics Visualizer: Select root note and chord type to visualize frequency spectrum, composite waveform, and harmonic structure in real time. U…

Noise Propagation & Distance Attenuation Calculator

Noise Control

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

Noise Barrier Insertion Loss Calculator — Maekawa Diffraction

Noise Control

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

Room Noise Criterion (NC) Curve Simulator

Room & Building Acoustics

Enter octave-band SPL values measured in a room and the tool compares them to Beranek's NC family, returning the NC rating, governing frequency and A-weighted level. Pra…

Noise Level Calculator — SPL Combination, Distance Attenuation & A-Weighting

Noise Control

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

Noise Mapping · ISO 9613-2 Compliant

Noise Control

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.

Room RT60 Sabine/Eyring Acoustic Design Simulator

Room & Building Acoustics

Room RT60 Sabine/Eyring Acoustic Design Simulator: Compute reverberation time RT60 with both Sabine and Eyring equations from room dimensions, wall/ceiling/f…

Noise & Vibration dB Calculator — SPL, Distance Attenuation, A-Weighting

Noise Control

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

Octave Band Noise Spectrum Analyzer

Electroacoustics & Audio

Enter noise levels for 9 octave bands (31.5–8kHz) and instantly calculate A/C/Z-weighted SPL, overall sound pressure level, Zwicker loudness (sone/phon), and NC curve compliance.

Room Reverberation Time Simulator

Room & Building Acoustics

Compute the reverberation time T60 — how long sound lingers in a room after the source stops — with the Sabine and Eyring equations.

Sound Absorption & Reverberation Time Calculator (Sabine)

Room & Building Acoustics

Calculate RT60 reverberation time instantly. Input room dimensions and materials for acoustic analysis of halls, studios, and more using Sabine & Eyring formulas.

Sound Level & Decibel Scale Calculator

Sound Wave Physics

Calculate sound pressure level (SPL) and decibel attenuation with reference distance modeling. Compare noise sources and predict sound levels in acoustics engineering.

Sound Pressure Level & Noise Calculator (dB Combination)

Sound Wave Physics

Calculate combined sound pressure levels, distance attenuation, and A-weighting corrections for noise analysis. Compare results with WHO/ISO standards.

Sound Power Level (ISO 3744) Simulator

Noise Control

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

Sound Pressure Level vs Distance Simulator

Noise Control

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

Sound Transmission Class (STC) Simulator

Room & Building Acoustics

Sound Transmission Class (STC) Simulator: Estimate the wall-isolation performance of partitions, party walls and studio shells using the US Sound Transmissio…

Sound Wave Simulator (Web Audio API) — See & Hear Frequency, Waveform & Beats

Sound Wave Physics

Visualize sound waves in real time. Adjust frequency, waveform, and amplitude. See particle oscillation animations and hear the resulting sound simultaneously.

STI Speech Intelligibility Simulator

Room & Building Acoustics

STI Speech Intelligibility Simulator: The Speech Transmission Index (STI) is the international standard score that quantifies how reverberation and backgroun…

Speed of Sound Simulator — Wave Propagation in an Ideal Gas

Sound Wave Physics

Speed of sound simulator: real-time c, km/h, target speed at Mach M and 1 km travel time from gamma, molar mass, temperature, with spherical wavefronts and Mach cone view.

String Resonance & Standing Wave Simulator — Harmonics, Mode Shapes & Acoustics

Sound Wave Physics

Visualize string eigenmodes in real time. Compute fundamental frequency and harmonics from tension, density, and length with this wave simulator.

Subwoofer Bass-Reflex Port Tuning — Helmholtz Fb

Electroacoustics & Audio

From enclosure volume, port diameter and port length, compute the Helmholtz tuning frequency Fb of a bass-reflex enclosure in real time, and evaluate the match against Q…

Double-Wall Sound Transmission Loss (TL) Simulator

Room & Building Acoustics

Calculate the sound transmission loss of a "two panels + air gap" construction — double-glazed windows, studio partitions, speaker enclosures.

Ultrasound Attenuation Simulator

Sound Wave Physics

Ultrasound Attenuation Simulator: See how much energy a medical ultrasound pulse loses to absorption and scattering as it travels through tissue. Adjust the …

Underwater Acoustic Sonar Equation Range Simulator

Sound Wave Physics

Underwater Acoustic Sonar Equation Range Simulator: A real-time calculator for the active and passive sonar equations (Urick 1983). Sweep source level, targe…