Five steps. About a minute. Real physics, not a guess.
Echo isn’t a questionnaire that spits out a generic recommendation. It runs the same equations a consultant would reach for first, on the room you actually describe — which is why the report at the end has real numbers on it, not a category.
Check my room →- 1
Describe it
The size and shape of the room, and what each surface is made of. A plan or a photo of one can help.
- 2
Build it
- 3
Hear it
- 4
Check it
- 5
Decide
A sketch of the room with its surfaces noted beside it. The grey figures stand for the people who use the space.
Illustration of the journey of one fictional room. A room is sketched on a plan, built into a model, sound is sent through it as teal direct paths and amber late echoes, the result is compared with a teal target gate, and treatment is added until the amber tail shortens inside the gate. A report then folds out. No real figures are shown.
Describe the room
Length, width, height, and what's on each surface — floor, walls, ceiling. That's it. No plans, no drawings required — though if you have a DXF plan, or even just a PDF or photo of one, the wizard will read the geometry straight off it and propose the outline for you to check, any room shape, not just a rectangle. Most people do this standing in the room on a phone, tape measure in the other hand.
Echo runs the physics
The same statistical method an acoustician starts a project with — the Sabine/Eyring family of equations — calculates reverberation time from the room's volume and the absorption of every surface in it. Speech clarity is calculated separately, using IEC 60268-16, the international standard for predicting how intelligible speech will be in a space. Both run in the time it takes to read this sentence.
See the room as it is now
A single reverberation-time figure and a speech-clarity score, plotted against what a room like this should be — not a guess at what "good" means, but the relevant published guidance for that room type, with the basis for that target named on the report. If the room already meets it, Echo says so plainly instead of finding a problem that isn't there.
Compare five ways to fix it
Ceiling rafts, wall panels, carpet or underlay, curtains, upholstered seating — each quantified against the actual area it would need in this specific room, each showing the reverberation time it would leave you with. Not one recommendation; five real options, so the decision about budget and appearance stays yours.
Download the report
One branded report, print-ready to A4 (open it and Print → Save as PDF): the room as it is, the five routes to fix it, the standard it's being checked against, and the method behind the numbers. Yours to keep, to send to a client, a contractor, or a colleague. The link stays open for three years from purchase; save your own copy as well — there is no account to log back into.
Where this stops being enough
Echo is honest about its own limits, on purpose. It’s an indicative prediction for deciding what to do at design stage — not a measured survey, and not a substitute for one where a formal, signed-off figure is genuinely required. Where that’s the case, that comes from a measurement to BS EN ISO 3382-2, carried out by a qualified acoustician. Most of what Echo gives you is knowing, before that survey is commissioned, whether you actually need one.
See the standards behind every figure →Try it on your own room
Seeing whether there’s a problem is free. You only pay for the report once you know you want it.
Check my room →