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Calculation Validation
Open accuracy data. We publish our benchmarks so you can verify our calculations.
ISO 3382-2 · ANSI S12.60 · IEC 60268-16
6/6 Benchmarks Passing
AcousPlan v0.43.0 — 2 April 2026
Methodology
AcousPlan validates its RT60 and STI calculations against ISO reference values, published worked examples, and competitor cross-checks. Each benchmark runs the same Sabine and Eyring engines that power the live calculator.
V1: Sabine/Eyring Reference Values
ISO 3382-2:2008 Annex A — Acceptance: ±1% of analytical solution
| ID | Test Case | Expected | Calculated | Error | Status |
|---|---|---|---|---|---|
| V1.1 | Sabine — ISO reference (V=200m³, A=30m²) | 1.0733 s | 1.0741 s | 0.071% | PASS |
| V1.2 | Sabine — Large room (V=10000m³, A=1000m²) | 1.6100 s | 1.6111 s | 0.068% | PASS |
| V1.3 | Sabine — Classroom 10×8×3 (treated) | 0.48 s @500Hz | 0.4786 s | <1% | PASS |
| V1.4 | Eyring — Low α convergence (ā=0.02) | Ratio ≈ 1.0 | Ratio = 0.990 | 1.0% | PASS |
| V1.5 | Eyring — High α divergence (ā=0.5) | Ratio < 0.85 | Ratio = 0.721 | N/A | PASS |
| V1.6 | Air absorption effect @4kHz | < 1.611 s | 1.1508 s | N/A | PASS |
Live Room-Level Benchmarks
Running benchmarks...
Open Challenge
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