標(biāo)準(zhǔn)號：ISO 9568-1993
中文標(biāo)準(zhǔn)名稱：電影 影院、鑒定放映室及混錄棚的背景噪聲聲級
英文標(biāo)準(zhǔn)名稱：Cinematography; background acoustic noise levels in theatres, review rooms and dubbing rooms
標(biāo)準(zhǔn)類型：P77
發(fā)布日期：1999/12/31 12:00:00
實(shí)施日期：1999/12/31 12:00:00
中國標(biāo)準(zhǔn)分類號：P77
國際標(biāo)準(zhǔn)分類號：97.200.10
適用范圍：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.