21Corrections and updates
The short version: This guide will have mistakes in it, and the people who know best are the ones who run these systems every day. If something here is wrong, out of date or missing credit, tell us and we will fix it and log the change below with the date.
Spotted something wrong?
Send a correction
Email hello@thirdpolararch.com with the section, the sentence, what is wrong, and a source if you have one. If you work with sound for a living - as an acoustician, an audiologist, a sound engineer, a noise officer, a transit or airport staffer - say so; first-hand accounts are welcome, and we will cite them only with your permission.
We fix errors of fact, broken links, missing or wrong credit, and anything out of date. Arguments about policy stay out of scope, but we will fix any place where we stated one side as fact.
Change log
| Date | What changed |
|---|---|
| Oct 22, 2026 | First published. Before publication every section went through two independent source-check rounds and a wording and audience pass. |