Better sound starts with physics

Physics-based room modeling, measurement, and speaker placement — all in your browser.

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The Atuund Workstation

FEM Room Modeling

Finite element analysis for any room shape — L-shaped, angled walls, alcoves. Not just rectangles.

Model your room

Acoustic Measurement

Impulse response, waterfall plots, and clarity metrics. A full measurement suite in your browser.

Measure your room

Auto-Optimize Placement

Tests thousands of speaker and listener positions to find the flattest bass response automatically.

Optimize placement

MODE 1,0,0

42.3 Hz • AXIAL

ELEMENTS: 16

NODES: 14

L-SHAPED • 4.2 × 3.6m

PRESSURE: MAX

PRESSURE: MIN

Why Physics

Real simulation, not rules of thumb

Finite Element Analysis

Professional-grade FEM simulation — the same methods used in acoustic consulting.

Any Room Shape

L-shaped, angled walls, alcoves. Draw your actual room with the polygon editor.

Results in Seconds

Full analysis runs in your browser. No uploads, no waiting, no software to install.

Free Tools

Room ModesRoom RatiosSchroeder FrequencyRT60 CalculatorSpeaker PlacementSBIR CalculatorWavelength & FrequencydB CalculatorFrequency Sweep

Ready to hear the difference?

Model any room, measure with your mic, and auto-optimize speaker placement. All in your browser.

Try Workstation

$10/mo or $50/year. Free tools always free.

Frequently Asked Questions

What is a room mode calculator?

A room mode calculator identifies the resonant frequencies of your room based on its dimensions. At these frequencies, sound waves reflect between parallel surfaces and create standing waves — areas where bass is reinforced or cancelled. Knowing your room modes helps you choose speaker and listener positions that avoid the worst peaks and nulls.

How do I find the best position for my subwoofer?

The most common approach is the "subwoofer crawl" — placing the sub at your listening position, then crawling around the room to find where bass sounds most even. Atuund automates this process computationally, testing thousands of positions against your room's acoustic model to find the optimal spot.

What is RT60 and why does it matter?

RT60 is the time it takes for sound to decay by 60 dB after the source stops. It's the standard measure of how "reverberant" a room is. A home listening room typically targets an RT60 of 0.3–0.6 seconds. Too long and speech becomes muddy; too short and the room feels dead. Atuund calculates RT60 based on your room size and surface materials.