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
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cdf Schallschutz, Dieter Friedemann

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DAkkS D-PL-19426-01-00 Dresden, DE
DIN 4150-1 DIN 4150-2 DIN 4150-3 DIN EN 61400-11
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cetecom advanced

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DAkkS D-PL-12047-01-01 Saarbrücken, DE
ISO 7637-1 ISO 7637-2 ISO 7637-3: 2016 ISO 10605 ISO 11452-2: 2019 + 3 more
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dEnergy

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DAkkS D-PL-23069-01-01 Berlin, DE
ISO 9613-02
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deBAKOM Gesellschaft für sensorische Meßtechnik

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DAkkS D-PL-18963-01-00 Odenthal, DE
DIN 45645-2
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eco-INSTITUT Germany

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DAkkS D-PL-20051-01-01 Köln, DE
DIN ISO 16000-3 DIN ISO 16000-6 DIN EN ISO 16000-9 DIN EN ISO 16000-10 DIN EN ISO 16000-11 + 3 more
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enosite

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DAkkS D-PL-21111-01-00 Rerik, DE
ISO 9613-2
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esz AG calibration & metrology

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DAkkS D-K-15019-01-01 Landkreis Fürstenfeldbruck, DE
Hochspannung - Wechselspannung Bereiche Rechteckspannung Amplitudenparameter + 3 more
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eumetron

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DAkkS D-K-15151-01-01 Aalen, DE
− Durchmesser − Parallelendmaße − Formabweichung − Strichmaße, Abstände − Virtuelle Koordinatenmessgeräte + 3 more
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europascal

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DAkkS D-K-15055-01-01 Hanau, DE
- Gleichspannung / Messgeräte > 0 V > 0,22 V > 2,2 V + 3 more
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halstrup-walcher

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DAkkS D-K-21048-01-00 Kirchzarten, DE
Positiver und negativer Positiver Überdruck p e 1) In den CMC sind die erweiterten Messu
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iKM Service

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DAkkS D-K-21115-01-00 Zwickau, DE
Industrielle Messtechnik ≤ 860 mm GmbH, Oberkochen, D
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iLF Magdeburg

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DAkkS D-PL-18869-01-01 Magdeburg, DE
DIN EN ISO 9117-3 DIN EN ISO 9117-5 DIN EN ISO 1463 DIN EN ISO 2808 DIN EN ISO 2178 + 3 more
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ifm prover gmbh Sensorik für die Prozeß- und Verfahrenstechnik

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DAkkS D-K-17060-01-00 Tettnang, DE
Taupunkttemperatur –0,91 bar bis Positiver und negativer Überdruck p *) (ein- oder mehrgängige + 3 more
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ift Rosenheim

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DAkkS D-PL-11349-01-01 Rosenheim, DE
ASTM E 330/E 330M ASTM E 283/E283M DIN 4103-1 DIN 68706-1 UNE-EN 12211 + 3 more
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iki Institut für Krankenhaushygiene und Infektionskontrolle

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DAkkS D-PL-21129-01-03 Gießen, DE
DIN EN ISO 5667-1 (A 4) DIN ISO 5667-5 (A 14) DIN EN ISO 5667-3 (A 21) DIN EN ISO 19458 (K 19) DIN 19643-1 + 3 more
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imetrologie GmbH Institut für Metrologie und Prozesstechnologie

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DAkkS D-K-15219-01-02 Helmstadt, DE
Taupunkttemperatur fixpunktzellen Railway braking — urban guided transport Railway vehicle body structural requirem SPRT-Sensor + 3 more
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innomatec Mess- und Schnellanschluss-Systeme

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DAkkS D-K-19194-01-00 Idstein, DE
Absolutdruck p abs > 0,8 bar > 1,2 bar > 20 bar + 3 more
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innomatec Mess- und Schnellanschluss-Systeme

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DAkkS D-K-19194-01-01 Idstein, DE
Absolutdruck p Positiver Überdruck p e Absolutdruck Pabs > 0,8 bar Überdruck p + 3 more
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iocto

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DAkkS D-K-21204-01-00 Hofheim am Taunus, DE
Taupunkttemperatur direktanzeigende −45 °C Railway vehicle body structural requirem Widerstandssensor direktanzeigende > 200 °C + 3 more
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labopart - Medizinische Laboratorien

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DAkkS D-ML-13309-01-00 Dresden, DE
Basophile Eosinophile Erythrozyten Hämatokrit Leukozyten + 3 more
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materia services

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DAkkS D-K-22604-01-01 Neumünster, DE
Kraft (WPM) Vibration measuring instruments — test m Werkstoffprüfmaschinen Acoustics — tonality assessment (DIN 456 Measurement of traffic noise immissions + 3 more
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mib Medizinisches Infektiologiezentrum Berlin

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DAkkS D-ML-13067-01-00 Berlin, DE
Basophile Eosinophile Erythrozyten Hämatokrit Leukozyten (Zellzahl) + 3 more
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qbig

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DAkkS D-K-21619-01-00 Leer, DE
Durchflussmess- 13 m³/h - Hochspannungsmessgrößen > 25 m³/h Volumendurchfluss > 40 m³/h + 3 more
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seca

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DAkkS D-K-22590-02-01 Hamburg, DE
nichtselbsttätige elektronische Waagen − Waagen
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synlab Medizinisches Versorgungszentrum Labor München Zentrum

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DAkkS D-ML-13149-01-00 München, DE
Blutungszeit 5-Hydroxyindolessigsäure Aminosäuren Carbohydrate-Deficient-Transferrin Everolimus + 3 more
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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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