标准摘要
[中文适用范围]： 规定室内背景声压级的测量方法和最大额定值。 适用于供暖、通风和空调系统发出的噪声、投影仪发出的侵入性噪声以及任何其他机械或电气设备发出的噪声，但不适用于来自外部的侵入性噪声，例如交通噪声。 它适用于背景噪声本质上是稳态声音、没有强时变分量的应用。 [外文原描述]： 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.
英文名称Cinematography — Background acoustic noise levels in theatres, review rooms and dubbing rooms