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
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TÜV SÜD Product Service GmbH Laborbereich Reifen & Räder

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ISO 18164 ISO 28580 ISO 16392 ISO 15222 ISO 13325
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ISO 2631-4 DIN EN 15839 DIN EN 15746-1 DIN EN 15746-2 DIN EN 15746-3 + 3 more
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IEC 61508-1 EN 61508-1: IEC 61508-2 IEC 61508-3 DIN EN 61508-3 + 3 more
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DIN 4150-1 DIN 4150-2 DIN 4150-3 DIN 45680 Beiblatt 1 DIN 45691
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DIN EN ISO 3170 DIN 19698-1 DIN 19698-2 DIN 19698-5 DIN 19698-6 + 3 more
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UL International Germany

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IEC 61851-1: 2010 IEC 61851-23 IEC 62109-1 IEC 62109-2 IEC 61010 + 3 more
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Universität Stuttgart Institut für Gebäudeenergetik, Thermotechnik und Energiespeicherung

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Sound power — engineering method using a Sound power — survey method (ISO 3746) Sound power — in-situ using reference so Sound intensity — scanning method (ISO 9 Sound intensity — scanning method part 2 + 3 more
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Universität Stuttgart Materialprüfungsanstalt Universität Stuttgart

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DIN EN ISO 4590 DIN EN ISO 9053-1 DIN EN ISO 12571 DIN EN ISO 12572 DIN EN ISO 15148 + 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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