ISO 9614-1:2023

Sound Power — Intensity Method (Discrete Points)

This test uses a sound intensity probe to measure acoustic intensity at discrete points on a measurement surface, allowing determination of sound power levels without requiring a fully anechoic environment. The intensity-based approach is effective for characterizing noise sources in semi-reverberant or field conditions where traditional pressure-based methods are unreliable. It provides directional acoustic information and is valuable for source localization and acoustic modification assessment. Accreditation ensures proper probe calibration, measurement procedures, and data processing are maintained to standards.

What it measures

  • Sound intensity magnitude and direction (vector)
  • Sound power level by surface integration
  • A-weighted and frequency-weighted acoustic power
  • Sound radiation patterns from complex sources
🇩🇪 DIN EN ISO 9614-2 🇬🇧 BS EN ISO 9614-2 🇫🇷 NF EN ISO 9614-2 🇮🇹 UNI EN ISO 9614-2 🇪🇸 UNE EN ISO 9614-2 🇳🇱 NEN EN ISO 9614-2 🇩🇪 DIN EN ISO 3744 🇬🇧 BS EN ISO 3744 🇫🇷 NF EN ISO 3744 🇮🇹 UNI EN ISO 3744 🇪🇸 UNE EN ISO 3744 🇳🇱 NEN EN ISO 3744
1,670 Accredited labs
18 Countries

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COFRAC 1-6553 Senlis, FR
NF X 43-264 NF X 43-267 ISO 16200-1 DIN EN 14385 NF X43-551 + 3 more
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COFRAC 1-0097 Charleville-Mezieres, FR
DIN EN ISO 6508-1 ASTM E8/E 8M DIN EN ISO 643 EN ISO 12624 ISO 4967 + 3 more
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COFRAC 1-1570 Chatellerault, FR
EN 13819-2:2020 DIN 53521 DIN EN 13522 DIN 45635-23 Sizing, Range of fitting, Resistance to + 3 more
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DAkkS D-PL-12030-01-02 Plattling, DE
DIN EN 55016-2 VDE 0877-16-2-1 VDE 0877-16-2-2 VDE 0877-16-2-3 EN IEC 61000-4 + 3 more
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CSI SpA

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ACCREDIA 00009 Bollate, IT
BS 1363-1 BS EN 15662 DIN EN ISO 6888-1 DIN EN 60068-2-30 DIN EN 81-58 + 3 more
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ACCREDIA 00593 Rimini, IT
ISO 3745 DIN EN ISO 11202 DIN EN ISO 11203 UNI 9432 ISO 11204 + 1 more
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CSTB - BV

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COFRAC 1-0300 Marne La Vallee Cedex 2, FR
DIN EN 947 DIN CEN TS 15119-2 NF P 20-501 DIN EN 1026 BS EN 14351-1:2006+A2:2016 + 3 more
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COFRAC 1-1542 Saint Martin D'Heres, FR
DIN EN 1279-2 DIN EN 1279-5 DIN EN 12094-10 EN 1279-6 – Méthode de référence DIN EN 14449 + 3 more
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CTC

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COFRAC 1-0130 Lyon Cedex 07, FR
DIN EN 27888 DIN EN ISO 10523 NF X 31-615 (Uniquement prélèvements NF EN ISO 7887 Méthode D DIN EN ISO 9963-1 + 3 more
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DAkkS D-ML-13325-01-00 Cottbus, DE
Oligosaccharide Chromatographie (Gaschromatograpie Cannabinoide (THC-COOH) Amphetamine Opiate + 3 more
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UKAS 0654 Norwich, GB
DC VOLTAGE DC Resistance DC CURRENT AC Current Generation Generation (continued) + 3 more
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UKAS 21871 Pampisford, GB
BS EN ISO 10140-2:2021 ISO 7171
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UKAS 0789 Great Dunmow, GB
Sound Calibrators FREQUENCY Microphones based: ½” & ¼” microphones @ 250 Hz + 3 more
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UKAS 1079 Gloucestershire, GB
BS ISO 488:2008, 2446:2008 and on BS 4401:Part 3:1970(1986) BS 696-2:1989 (superseded and BS ISO 6731:2010 ISO BS EN 3727-1:2002 + 3 more
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UKAS 4301 Llanishen, GB
Electrolytes in blood serum: Enzymes in blood serum: (Chlamydia pneumoniae, Mycoplasma urine: Hormones in blood serum: + 1 more
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Carl Zeiss

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DAkkS D-PL-12125-01-01 Oberkochen, DE
DIN EN 60601-1 IEC 60601-1 DIN EN 60601-1-1 IEC 60601-1-1 IEC 80601-2-77 + 3 more
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DAkkS D-K-21703-01-00 Oberkochen, DE
Carl Zeiss Industrielle ≤ 3818 mm Oberkochen, D 1) In den CMC sind die erweiterten Messu Carl Zeiss Industrielle ≤ 20 m Auswertesoftware Messvolumen mit + 3 more
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DAkkS D-K-15007-01-01 Oberkochen, DE
Parallelendmaße 50 mm DIN EN ISO 3650:1999 Thermischer Ausdeh- Maximale Dimension Bandbreite Höhe: 80 mm + 3 more
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DAkkS D-PL-12037-01-02 Jena, DE
DIN EN 61010-1 VDE 0411-1 IEC 61010-1 : 2010 DIN EN 60825-1 VDE 0837 + 3 more
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DAkkS D-K-12037-01-01 Jena, DE
Parallelendmaße * 0,5 mm DIN EN ISO 3650:1999 Parallelendmaße * 40 mm Parallelendmaße * ≥ 100 mm Strichmaßstäbe 0 mm + 3 more
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UKAS 27202 Paisley, GB
(HSG 264, 2012)
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UKAS 7914 Willsbridge, GB
5 of HSG 227 (2004)) (HSG 264, 2012)
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UKAS 1643 Chelmsford, GB
(cdt), Deletion an Pos 117 (HSG 248) – 2021 (PCM) based on HSG 248 BS 6068-4.12:1998 (withdrawn)
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CeGaT

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DAkkS D-ML-13206-01-01 Tübingen, DE
angeborener Chromosomensatz (Imbalancen im Genom, (Duplikationen/Del SNRPN-Region 15q11-13 UPD15 (UBE3A) SMN1; Spinale Muskelatrophie + 3 more
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Cenata

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DAkkS D-ML-21205-01-01 Tübingen, DE
Pränatales Screening auf Chromosomenstörungen (Trisomie 21, Trisomie 18, Trisomie 13, X0, XXX, XXY, XYY, XXYY, 22q11 (DiGe
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Industries

Automotive and vehicle noise source characterization Machinery and equipment acoustic testing Building services and HVAC noise assessment Aerospace and transportation noise evaluation Environmental noise consulting and source identification

Related Standards

  • ISO 9614-2 Determination of sound power levels of noise sources by sound intensity — Part 2: Measurement by scanning
  • ISO 3744 Determination of sound power levels of noise sources using sound pressure — Precision method in anechoic and hemi-anechoic rooms
  • ISO 9613-1 Attenuation of sound during propagation outdoors — Part 1: Calculation of the absorption of sound by the atmosphere

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