Acoustics - determination of sound power levels of noise sources - precision methods for anechoic and semi - anechoic rooms 声学噪声源声功率级的测定消声室和半消声室精密法
3.
Field balancing equipment . description and evoluation . fth : laboratory methods in anechoic and semi - anechoic rooms 现场配平设备.说明和评价.在消声室和半消声室里进行评价的实验室方法