Unstable noise
Non-steady noise - noise whose sound level changes over time by more than 5 dBA when measured on a slow time characteristic
Source: "MSanPiN 001-96. Sanitary norms for permissible levels of physical factors when using consumer goods in household conditions. Interstate sanitary rules and norms." (approved by the Decree of the State Committee for Sanitary and Epidemiological Surveillance of Russia dated January 19, 1996 No. 2, by the Ministry of Health of the Republic of Belarus dated June 8, 1995 No. 9-29-95) (with amendments from December 21, 1999)
Понятие «шум непостоянный» мужского рода.
| Падеж | Единственное число | Множественное число |
|---|---|---|
| Р | шума непостоянного | шумов непостоянных |
| Д | шуму непостоянному | шумам непостоянным |
| В | шум непостоянный | шумы непостоянные |
| Т | шумом непостоянным | шумами непостоянными |
| П | шуме непостоянном | шумах непостоянных |