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
🇧🇪 NBN EN ISO 3382-1 🇩🇪 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 🇧🇪 NBN EN 60268-16 🇩🇪 DIN EN 60268-16 🇬🇧 BS EN 60268-16 🇫🇷 NF EN 60268-16 🇮🇹 UNI EN 60268-16
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CEREMA / DTER Hauts-de-France

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COFRAC 1-5710 Saint-Quentin, FR
Tensile testing of metallic materials (I DIN EN 12390-3 DIN EN 933-1 DIN EN 933-3 DIN EN 1097-2 + 3 more
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CEREMA / DTER Méditerranée

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COFRAC 1-5697 Aix-En-Provence, FR
Tensile testing of metallic materials (I DIN EN 62196-1: 2015 DIN EN 12390-3 DIN EN 932-2 DIN EN 933-1 + 3 more
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CEREMA / DTER Occitanie

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COFRAC 1-5706 Toulouse, FR
DIN EN 62196-1: 2015 DIN EN 12390-3 DIN EN 932-1 DIN EN 932-2 DIN EN 932-3 + 3 more
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CERIB

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COFRAC 1-0001 Epernon, FR
DIN EN 62196-1: 2015 DIN EN 12350-3 DIN EN 12390-3 DIN EN 932-2 DIN EN 933-1 + 3 more
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CETIAT

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COFRAC 1-0021 Villeurbanne Cedex, FR
DIN EN 442-2 DIN EN 1860-1 IEC 62442-1 DIN EN ISO 16890-1 DIN EN ISO 16890-2 + 3 more
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CETIM

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COFRAC 1-7263 Senlis, FR
Tensile testing of metallic materials (I Charpy impact test (ISO 148-1) DIN EN ISO 4136 DIN EN ISO 5173 DIN EN ISO 9016 + 3 more
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CETSEO

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COFRAC 1-0907 Marseille, FR
DIN EN ISO 12185 DIN EN ISO 3405 DIN EN 13016-1 DIN EN ISO 20846 ASTM D 5453 + 3 more
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CHAMBRE D'AGRICULTURE DE LA GIRONDE

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COFRAC 1-0530 Blanquefort, FR
ISO 9727-1 ISO 9727-3 ISO 9727-4 ISO 9727-5 ISO 9727-6 + 3 more
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CICEA - OCE (Ouest Contrôle Environnement)

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COFRAC 1-2263 Arnage, FR
ISO 22262-1 NF X 43-262 NF X 43-257 NF X 43-298 NF X 43-050 + 3 more
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CME Environnement

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COFRAC 1-1539 Saint-Etienne, FR
DIN EN 13126-19 ISO 10780 DIN EN ISO 16911-1 DIN EN 13284-1 DIN EN 14790 + 3 more
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CNPP Entreprise

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COFRAC 1-0064 Saint-Marcel, FR
Salt spray / neutral salt fog test (ISO DIN EN IEC 60068-2-11 DIN EN IEC 60068-2-52 IEC 61000-4-2: 2008 IEC 61000-4-3: 2006 + 3 more
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COMEX

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COFRAC 1-7417 Marseille, FR
DIN EN 15250 DIN EN 1972 DIN EN 1809 NF EN 16805 ISO 18526-3 - §8 + 3 more
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COTHERM

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COFRAC 1-6619 Vinay, FR
DIN EN 50440 DIN EN 50440
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COVAIR - QUALICONSULT EXPLOITATION

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COFRAC 1-6553 Senlis, FR
DIN EN 13126-19 DIN EN ISO 16911-1 DIN EN 13284-1 DIN EN 14790 DIN EN 14792 + 3 more
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CP2A

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COFRAC 1-6057 Voisins Le Bretonneux, FR
NF X 43-050 NF X 43-269 ISO 16000-7 FD X 46-033
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CRET

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COFRAC 1-0921 Neuville-En-Ferrain, FR
DIN EN ISO 9239-1 EN ISO 11925-2 DIN EN ISO 24342 DIN EN 14041 DIN EN 60034-15 + 3 more
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CRITT Matériaux Innovation - Charleville-Mézières

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COFRAC 1-0097 Charleville-Mezieres, FR
Tensile testing of metallic materials (I ISO DIN EN ISO 6506-1 DIN EN ISO 6507-1 DIN EN ISO 643 + 3 more
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CRITT Matériaux Innovation - Nogent

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COFRAC 1-1648 Nogent, FR
Tensile testing of metallic materials (I DIN EN ISO 643 ASTM E 112 DIN EN 1484 DIN EN ISO 9377-2 + 3 more
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CRITT SPORT LOISIRS

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COFRAC 1-1570 Chatellerault, FR
DIN EN 15194: 2018 DIN EN ISO 3071 DIN 53521 ISO 3071 ISO 4045 + 3 more
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CSTB - BV

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COFRAC 1-0300 Marne La Vallee Cedex 2, FR
ISO OMIM# 614024 DIN EN ISO 2813 DIN EN 60601-1-10 DIN EN ISO 16826 + 3 more
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CSTB - Grenoble

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COFRAC 1-1542 Saint Martin D'Heres, FR
Salt spray / neutral salt fog test (ISO OMIM# 614024 DIN EN 1191 DIN EN 12046-1 DIN EN 12046-2 + 3 more
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CSTB Nantes

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COFRAC 1-0304 Nantes, FR
DIN EN ISO 3126 DIN EN 17150 DIN EN ISO 13259 DIN EN ISO 1133-1 DIN EN ISO 11357-6 + 3 more
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CTC

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COFRAC 1-0130 Lyon Cedex 07, FR
DIN EN 27888 DIN EN ISO 16212 DIN EN ISO 10863 DIN EN 55016-2-1 DIN EN ISO 6941 + 3 more
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Cabinet Expertises Environnementales

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COFRAC 1-6108 Pantin, FR
NF X 43-050 NF X 43-269 ISO 16000-7 FD X 46-033
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Centre Technique des Matériaux Naturels de Construction (CTMNC)

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COFRAC 1-0143 Clamart, FR
DIN EN 12664 DIN EN 1926 DIN EN 12372 DIN EN 1936 DIN EN 772-11 + 3 more
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Industries

Architectural and acoustic design Building construction and commissioning Educational facilities management Broadcasting and media production Hospitality and entertainment venues

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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