Significance and Use 5.1 This is an in situ method, that is, the measurements are made at the actual installation.

ISO 3382-2:2008 specifies methods for the measurement of reverberation time in ordinary rooms. It describes the measurement procedure, the apparatus

Tiêu chuẩn này quy định ba mức về độ chính xác của phép đo: khảo sát, kỹ thuật, và độ

ISO 3382-1:2009 specifies methods for the measurement of reverberation time and other room acoustical parameters in performance spaces. It describes

Thời gian âm vang của phòng được coi là một chỉ thị chính của các đặc tính âm thanh. Trong

Significance and Use The material loss factor and modulus of damping materials are useful in designing measures to control vibration

5.1 The material loss factor and modulus of damping materials are useful in designing measures to control vibration in structures

This document specifies the measurement of the determination of the static airflow resistance, in a laminar flow regime, of porous

Significance and Use 5.1 The specific airflow resistance of an acoustical material is one of the properties that determine its

5.1 There are several purposes of this test: 5.1.1 For transmission loss: (a) to characterize the sound insulation characteristics of materials in a less