AcoustaPLOT Echo

How AcoustaPLOT Echo actually works, start to finish -- four questions, a real acoustic calculation, and a branded report in under a minute.

Walks through Echo's five-step flow: four questions about the room, a Sabine/Eyring reverberation calculation run in under 60 seconds, speech clarity worked out using IEC 60268-16, the result compared against the relevant ISO 3382 target, and five fix options presented with the exact surface area each one needs.

Covers all three ways to use it: a free instant check, a £34.99 one-off branded PDF report for a single room, and Echo Studio at £149/month for anyone specifying more than one room.

The everyday rooms that go acoustically wrong -- restaurants, classrooms, open-plan offices, hotel bars -- and the five standard ways to actually fix them.

Covers the rooms that most commonly go wrong acoustically -- restaurants, classrooms, open-plan offices, hotel lobbies and bars, co-working floors -- and the five treatment categories Echo always checks: ceiling rafts, wall panels, carpet with underlay, curtains, and upholstered seating.

States Echo's real pricing throughout: £34.99 one-off, £149/month for Studio (including its 15-day-before-first-charge and 3-month minimum terms), £299/month for Pro.

The actual science behind reverberation time and speech clarity -- RT60, STI, C50, and why a room can be "quiet" and still impossible to understand.

Goes deep on the science: RT60, STI, C50 and DIN 18041 Class B, background noise in dB(A), the Sabine/Eyring equations, ISO 354 absorption coefficients, flutter echo and comb filtering -- and where Echo Pro's geometric ray-tracing goes further than a statistical prediction.

Sourced from the methodology and glossary pages only (no FAQ in this pair), so this episode correctly doesn't state a price -- it closes on the free instant check and echo.acoustaplot.com instead.

How Echo's prediction lines up against the real standards -- BB93, ANSI/ASA S12.60, DIN 18041 -- and what a formal measured survey actually requires on top.

Covers the real standards Echo checks a result against: BB93 for UK classrooms, ANSI/ASA S12.60 for North American core learning spaces, DIN 18041 for Germany/DACH -- and is honest that restaurants, retail, hotel bars and co-working floors have no single mandated legal target, so those get compared against equivalent guidance instead.

Draws the same honest line Echo states everywhere: this is a design-stage prediction, and a formal measured survey to BS EN ISO 3382-2 by a qualified acoustician is what a contractual sign-off actually needs.

What actually separates Echo Studio from Echo Pro -- whole-room statistical prediction versus seat-by-seat geometric ray-tracing.

Studio runs a single Sabine/Eyring whole-room average and handles flat, sloped or vaulted ceilings -- aimed at designers, fit-out companies and venues. Pro runs full geometric ray-tracing, surface by surface and seat by seat -- aimed at architects and consultants working on auditoria, lecture halls and performance spaces.

States the real live pricing: Studio at £149/month (or £447 for the first 3 months) with a 3-month minimum term; Pro, still in development and waitlist-only, at £299/month (or £897 for the first 3 months).

Where Echo fits into an architect's actual workflow -- at concept, at detailed design with a real DXF import, and at client sign-off.

Walks through the three points in a real design workflow Echo is built for: a fast check at concept stage, a DXF-import-driven check at detailed design, and a final figure to show a client at sign-off -- each with the same five fix options and exact surface areas.

Framed for architects specifically: works on a phone or iPad for a site visit, keeps an order record for 6 years so a report can always be re-downloaded, and is explicit that it's a design-stage prediction tool, not a substitute for a consultant or a formal measured survey under BS EN ISO 3382-2 when a contractual figure is required.

Why AcoustaPLOT Echo is vendor-neutral -- it's paid for by the £34.99 report, not by anyone selling you panels afterwards.

Makes the case for vendor-neutral advice directly: a business that sells acoustic panels has an obvious incentive to recommend buying more of them; Echo is paid for by the report itself, not by what you buy afterwards, so its five treatment routes (ceiling rafts, wall panels, carpet with underlay, curtains, upholstered seating) are shown on their real merits.

Closes with the real numbers: £34.99 one-off, no account or subscription required, a print-ready branded A4 report, and Echo Studio at £149/month for anyone doing this for a living.

A Victorian primary-school classroom brought from 1.15s down to 0.55s reverberation, inside BB93's refurbishment limit -- without touching the ceiling.

An illustrative worked example: an 8 x 6.5 x 3.6m Victorian classroom (187m3) with a baseline reverberation time of 1.15 seconds -- well outside BB93 Table 6's refurbishment limits (0.8s primary, 1.0s secondary).

Treated with roughly 26m2 of wall panels and 52m2 of carpet tile (which also helps with footfall noise); curtains were costed but not used. Result: 0.55 seconds, comfortably inside the binding limit -- a design-stage Sabine/Eyring prediction, not a substitute for a measured survey to BS EN ISO 3382-2.

A 40-desk fintech office in a converted warehouse, taken from 0.9s down to 0.48s to clear the WELL v2 open-workspace threshold -- without hiding a single duct.

An illustrative worked example: a 22 x 14 x 4.2m open-plan floor (about 1,294m3) in a converted warehouse -- exposed brick, polished concrete, no suspended ceiling, all treated as non-negotiable design constraints.

Baseline reverberation of roughly 0.9 seconds against WELL v2's 0.5-second open-workspace threshold. Treated with about 210m2 of ceiling-hung rafts and 90m2 of fabric-wrapped wall panels, plus 4 freestanding acoustic call booths for privacy (not counted toward the reverberation figure). Result: 0.48 seconds -- inside the WELL threshold, industrial character intact.

A school sports hall brought from over 2 seconds' reverberation down to roughly 1.3s -- without blocking a single rooflight.

An illustrative worked example: a 36 x 20 x 8m sports hall (5,760m3) with reverberation over 2 seconds, checked against Sport England guidance.

Treated with about 260m2 of ceiling rafts hung between the rooflights (daylight deliberately preserved) and 140m2 of high-level wall panels kept above the 2.5m ball-strike line. An 18m curtain divider track was priced as a reserve option but not used. Result: roughly 1.3 seconds.