标准摘要
[中文适用范围]： 适用于短时运动图像声频的测量方法，用于评估主观响度和声音记录在推荐回放水平下房间中的恼人度。 [外文原描述]： ISO 21727:2016 specifies a method of measurement of short duration motion-picture sound that allows assessment of the subjective loudness and annoyance of the sound recording when replayed at the recommended replay level in rooms aligned with the characteristics of ISO 2969. The specified method of measurement assesses the entire duration of the sound recording, typically commercials and trailers that do not exceed 3 min in length, with suitable channel summation, frequency weighting and time integration. It does not specify a maximum recommended level for such material and is solely aimed at describing a measurement method. NOTE Typical recording and replay levels are discussed in Annex A.
英文名称Cinematography — Method of measurement of perceived loudness of short duration motion-picture audio material