倍频程和1/3倍频程滤波器型式评价大纲
Program of Pattern Evaluation of Octave-Band and Third-Octave-Band Filters

2015-12-07

Characterization of pavement texture by use of surface profiles — Part 4: One third octave band spectral analysis of surface profiles
用表面轮廓表征路面结构第4部分:表面轮廓的三分之一倍频带光谱分析

2024-04-18

电声学 飞机噪声测量仪器 运输机噪声评定用1/3倍频程声压级测量系统的性能要求
Electroacoustics-Instruments for measurement of aircraft noise-Performance requirements for systems to measure on-third-octave band sound pressure levels in noise certification of transport-category aeroplanes

2013-10-17

전기음향 — 항공기 소음 측정용 장비 — 수송 범주 항공기의 소음 인증 시 1/3 옥타브 대역 음압 레벨을 측정하기 위한 시스템의 성능 요구사항
电声学 - 飞机噪声测量仪器 - 运输类飞机噪声认证中测量三分之一倍频程声压级的系统性能要求

2017-08-29

전기음향 — 항공기 소음 측정용 장비 — 수송 범주 항공기의 소음 인증 시 1/3 옥타브 대역 음압 레벨을 측정하기 위한 시스템의 성능 요구사항
电声学.飞机噪声测量仪器.运输类飞机噪声认证中测量三分之一倍频带声压级系统的性能要求

2017-08-29

电声学 航空噪声测量仪器在运输类飞机噪声合格审定中测量1/3宽带倍频声压级装置的性能要求
Electroacoustics-Instruments for measurement of aircraft noise-Performance requirements for systems to measure one-third-octave band sound pressure levels in noise certification of transport-category aeroplanes

2008-10-20

Standard Test Method for Measurement and Reporting of Masking Sound Levels Using A-Weighted and One-Third-Octave-Band Sound Pressure Levels
使用A加权和三分之一倍频程声压级测量和报告掩蔽声级的标准试验方法

2022-06-01