ISO 9568-1993 电影 影院、鉴定放映室及混录棚的背景噪声声级

标准号：ISO 9568-1993
中文标准名称：电影 影院、鉴定放映室及混录棚的背景噪声声级
英文标准名称：Cinematography; background acoustic noise levels in theatres, review rooms and dubbing rooms
标准类型：P77
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：P77
国际标准分类号：97.200.10
适用范围：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.