ISO 3382-2:2015

Room Acoustics Reverberation Time Measurement

This test method specifies procedures for measuring reverberation time and other room acoustic parameters in ordinary rooms such as offices, classrooms, lecture halls, and residential spaces. Reverberation time (T30 or T20) is a fundamental acoustic property that affects speech intelligibility, sound quality, and acoustic comfort. It is essential for designing spaces with appropriate acoustic characteristics, verifying construction specifications, and ensuring compliance with building standards. Architects, acousticians, and building professionals rely on these measurements to evaluate and optimize room acoustic performance. ISO 17025 accreditation guarantees accurate measurements following standardized methodology.

What it measures

  • Reverberation time (T30, T20, EDT)
  • Frequency-dependent acoustic absorption
  • Early decay time and room acoustic parameters
  • Clarity index (C50) and definition (D50)
  • Speech transmission index (STI) indicators
🇩🇪 DIN EN ISO 3382-1 🇬🇧 BS EN ISO 3382-1 🇫🇷 NF EN ISO 3382-1 🇮🇹 UNI EN ISO 3382-1 🇪🇸 UNE EN ISO 3382-1 🇳🇱 NEN EN ISO 3382-1 🇩🇪 DIN EN 60268-16 🇬🇧 BS EN 60268-16 🇫🇷 NF EN 60268-16 🇮🇹 UNI EN 60268-16 🇪🇸 UNE EN 60268-16 🇳🇱 NEN EN 60268-16
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NF X 43-264 NF X 43-267 NF X 43-257 NF X 43-259 ISO 15202-1
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UKAS 4083 Woking, GB
ISO 7171 ISO 1407 BS EN ISO 140-4:1998 BS EN ISO 717-2:2020
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Hartford Steam Boiler UK

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UKAS 8452 Manchester, GB
BS 2790 - Specification for the design a BS 1113 - Specification for the design a BS EN 13480 Parts 1 to 8 - Metallic EN 13445 – Parts 1 to 10 Unfired pressur BS EN ISO 15614 and ASME IX + 3 more
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Harzklinikum Dorothea Christiane Erxleben GmbH Zentrum für Laboratoriumsdiagnostik

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automatische Zelldifferenzierung Erythrozyten Leukozyten Retikulozyten Thrombozyten + 3 more
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UKAS 9452 Whaddon, GB
DIN EN 61400-11 IEC 61400-11:2012/ AMD:2018
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ISO 7171 BS EN ISO 140-4:1998 BS EN ISO 16283-1:2014+A1:2017BS EN ISO BS EN ISO 16283-2:2020 HTM 08-01 - 2013 + 2 more
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Übertragungsmaß von Messmikrofonen oder Freifeld-Leerlauf- 20 Hz Freifeld -Übertragungsmaß Vorverstärker, nach IEC + 3 more
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Innen- und Tiefenmaße Konventioneller Wägewert/ Massenormale Festkörpervolumen + 3 more
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Related Standards

  • ISO 3382-1 Acoustics - Measurement of room acoustic parameters - Part 1: Performance spaces
  • EN 60268-16 Sound system equipment - Objective rating of speech intelligibility by speech transmission index
  • ISO 140-4 Acoustics - Measurement of sound insulation in buildings and of building elements - Part 4: Field measurements of airborne sound insulation between rooms

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