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Document ID (ISN)102252
CIS number 03-1376
Year 2003
Convention or series no. ISO 7235:2003
Title Acoustics - Laboratory measurement procedures for ducted silencers and air-terminal units - Insertion loss, flow noise and total pressure loss
Original title Acoustique - Modes opératoires de mesure en laboratoire pour silencieux en conduit et unités terminales - Perte d'insertion, bruit d'écoulement et perte de pression totale [in French]
Bibliographic information International Organization for Standardization (ISO), Case postale 56, 1211 Genève 20, Switzerland, 2nd ed., 2003. v, 49p. Illus. 24 ref. Price: CHF 142.00.
Abstract This international standard specifies methods for determining: the insertion loss, in frequency bands, of ducted silencers with and without airflow; the sound power level, in frequency bands, of the flow noise generated by ducted silencers; the total pressure loss of silencers with airflow; the transmission loss, in frequency bands, of air-terminal units. It is applicable to all types of silencer, including silencers for ventilating and air-conditioning systems, air intake and exhaust of flue gases, and similar applications. However, it is not applicable to the reactive silencers used in motor vehicles.
Descriptors (primary) ISO; acoustics; noise level measurement; silencers; sound attenuation
Descriptors (secondary) exhaust gases; standard; description of technique; ventilation
Document type F - Information notes, codes of practice, standards
Country / State or ProvinceISO
Subject(s) Noise, hearing and vibration
Broad subject area(s) Physical hazards
Browse category(ies) Noise