标准编号：ISO 21727:2004
中文名称：电影技术 活动 图片声频材料的可感觉燥声的测量方法
英文名称：Cinematography — Method of measurement of perceived loudness of motion-picture audio material
发布日期：2004-10
标准范围
This International Standard specifies a method of measurement of 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 with suitable channel summation, frequency weighting and time integration.NOTE Typical recording and replay levels are discussed in Annex A.
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