標準號：ANSI/ASA S12.56-2011
中文標準名稱：聲學.利用聲壓的噪聲源聲功率級和聲能級的測定.采用反射面上方密封測量表面的測量法
英文標準名稱：Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Survey method using an enveloping measurement surface over a reflecting plane
標準類型：Z32
發布日期：2011/1/1 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：Z32
國際標準分類號：17.140.01
適用范圍：This National Standard specifies methods for determining the sound power level or sound energy level of a noise source from sound pressure levels measured on a surface enveloping a noise source (machinery or equipment) in a test environment for which requirements are given. The sound power level (or, in the case of noise bursts or transient noise emission, the sound energy level) produced by the noise source with frequency A-weighting applied is calculated using those measurements.