Cinematography — Background acoustic noise levels in theatres, review rooms and dubbing rooms
NORMA vydaná dňa 21.1.1993
Označenie normy: ISO 9568:1993
Dátum vydania normy: 21.1.1993
Počet strán: 4
Približná hmotnosť: 12 g (0.03 libier)
Krajina: Medzinárodná technická norma
Kategória: Technické normy ISO
Description / Abstract: Specifies measurement methods and maximum ratings for indoor background sound pressure levels. Applies to noise emitted by heating, ventilating and air-conditioning systems, intrusive noise from the projector(s) and noise emitted by any other mechanical or electrical equipment, but not to intrusive noise from outside, such as traffic noise. It is intended for application when the background noise is essentially a steady-state sound, without strong time-varying components.