SIS SS-ISO 3742-1989 声学．噪声源声功率级测定．混响室离散频率和窄带源的精密测量法

标准号：SIS SS-ISO 3742-1989
中文标准名称：声学．噪声源声功率级测定．混响室离散频率和窄带源的精密测量法
英文标准名称：Acoustics — Determination ofsoundpower levels ofnoise sources — Precision methods for discrete-frequency and narrow-band sources in reverberation rooms
发布日期：1989/12/6 12:00:00
实施日期：1999/12/31 12:00:00
适用范围：This International Standard applies to sources which radiate discrete frequencies or narrow bands of noise. The spectrum of the source can include broad-band components upon which the prominent discrete frequencies or narrow bands of noise are superimposed. These methods are often complex and time-consuming for measurements on sources which primarily radiate discrete frequencies below 200 Hz. For such sources, measurements in a free field as described in ISO 3745 are likely to be more appropriate.