DPS
Drejtoria e Përgjithshme e Standardizimit
Tel/Cel: +355 4 222 62 55
E-mail: info@dps.gov.al
Adresa: Rr.: "Reshit Collaku", (pranë ILDKPKI, kati VI), Kutia Postare 98, Tiranë - Shqipëri
Main menu

ISO 3744:2010

Acoustics — Determination of sound power levels and sound energy levels of noise sources using sound pressure — Engineering methods for an essentially free field over a reflecting plane
22 sht 2010

General information

90.92     11 mar 2020

ISO

ISO/TC 43/SC 1

International Standard

17.140.01  

anglisht   frëngjisht  

Buying

Publikuar

Language in which you want to receive the document.

Scope

ISO 3744:2010 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 the noise source (machinery or equipment) in an environment that approximates to an acoustic free field near one or more reflecting planes. The sound power level (or, in the case of noise bursts or transient noise emission, the sound energy level) produced by the noise source, in frequency bands or with frequency A-weighting applied, is calculated using those measurements.
The methods specified in ISO 3744:2010 are suitable for all types of noise (steady, non-steady, fluctuating, isolated bursts of sound energy, etc.) defined in ISO 12001.
ISO 3744:2010 is applicable to all types and sizes of noise source (e.g. stationary or slowly moving plant, installation, machine, component or sub-assembly), provided the conditions for the measurements can be met.
The test environments that are applicable for measurements made in accordance with ISO 3744:2010 can be located indoors or outdoors, with one or more sound-reflecting planes present on or near which the noise source under test is mounted. The ideal environment is a completely open space with no bounding or reflecting surfaces other than the reflecting plane(s) (such as that provided by a qualified hemi-anechoic chamber), but procedures are given for applying corrections (within limits that are specified) in the case of environments that are less than ideal.
Information is given on the uncertainty of the sound power levels and sound energy levels determined in accordance with ISO 3744:2010, for measurements made in limited bands of frequency and with frequency A-weighting applied. The uncertainty conforms to ISO 12001:1996, accuracy grade 2 (engineering grade).

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 3744:1994

WITHDRAWN
ISO 4872:1978

NOW

PUBLISHED
ISO 3744:2010
90.92 Standard to be revised
11 mar 2020

REVISED BY

IN_DEVELOPMENT
ISO 3744

National adoptions

Akustika - Përcaktimi i nivele të fuqis të tingullit dhe niveleve të energjis së tingullit në burimet e zhurmës duke përdorur presionin e tingullit - Metodat inxhinierike për një fushë të lirë mbi një plan reflektues (ISO 3744:2010)

60.60 Standard published

DPS/KT 211 më tepër