倍频带声压级 meaning in English

octave band pressure level
octave band sound pressure level

Standard test method for evaluating masking sound in open offices using a - weighted and one - third octave band sound pressure levels
用a加权和1 3倍频带声压级评价敞开式办公间掩蔽声的标准试验方法
Electroacoustics . instruments for measurement of aircraft noise . performance requirements for systems to measure one - thirs - octave band sound pressure levels in noise certification of transport - category aeroplanes
电声学.航空噪声测量仪.运输机噪声检定的三分之一倍频带声压级系统测量用性能要求