ANSI S12.51 Part 1-2002 声学.利用声压测定噪声源的声级.混响室精确法

标准号：ANSI S12.51 Part 1-2002
中文标准名称：声学.利用声压测定噪声源的声级.混响室精确法
英文标准名称：Acoustics - Determination of sound power levels of noise sources using sound pressure - Precision methods for reverberation rooms
标准类型：Z32
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：Z32
国际标准分类号：17.140.01
适用范围：Specifies a direct method and a comparison method for determining the sound power level that would be produced by a source operating in an environment at standard meteorological conditions corresponding to a characteristic impedance of pc = 400 N s/m3 (where p is the density of air and c is the speed of sound). It specifies test room requirements, source location and general rules for operating conditions, instrumentation and techniques for obtaining an estimate of mean-square sound pressure levels from which the sound power levels of the source in octave or one-third-octave bands are calculated with a grade 1 accuracy.