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
๐Ÿ‡ฉ๐Ÿ‡ช DIN EN ISO 3382-1 ๐Ÿ‡ฌ๐Ÿ‡ง BS EN ISO 3382-1 ๐Ÿ‡ซ๐Ÿ‡ท NF EN ISO 3382-1 ๐Ÿ‡ฎ๐Ÿ‡น UNI EN ISO 3382-1 ๐Ÿ‡ช๐Ÿ‡ธ UNE EN ISO 3382-1 ๐Ÿ‡ณ๐Ÿ‡ฑ NEN EN ISO 3382-1 ๐Ÿ‡ฉ๐Ÿ‡ช DIN EN 60268-16 ๐Ÿ‡ฌ๐Ÿ‡ง BS EN 60268-16 ๐Ÿ‡ซ๐Ÿ‡ท NF EN 60268-16 ๐Ÿ‡ฎ๐Ÿ‡น UNI EN 60268-16 ๐Ÿ‡ช๐Ÿ‡ธ UNE EN 60268-16 ๐Ÿ‡ณ๐Ÿ‡ฑ NEN EN 60268-16
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20 Countries

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COFRAC 1-0833 Mende, FR
DIN EN ISO 17294-2 DIN EN ISO 14403-2 NF T 90-412 DIN EN ISO 21528-2 DIN EN ISO 7899-1 + 3 more
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COFRAC 1-1466 Pessac Cedex, FR
NF V08-106 NF T 90-412 NF EN ISO 7887 โ€“ VDE 414-9-11 DIN EN ISO 7899-1 + 3 more
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COFRAC 1-0551 Laon Cedex, FR
DIN ISO 11466 NF X31-120 DIN EN ISO 11885 NF X31-147 DIN EN 16175-1 + 3 more
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COFRAC 1-0796 Dijon Cedex, FR
DIN EN ISO 17294-2 DIN EN ISO 14403-2 DIN EN ISO 13395 NF T 90-412 DIN EN ISO 7899-1 + 3 more
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COFRAC 1-7330 Montauban, FR
DIN EN ISO 10703 NF T 90-412 DIN EN ISO 21528-1 DIN EN ISO 7899-1 VDE 414-9-11 + 3 more
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COFRAC 1-0977 Montpellier Cedex 2, FR
DIN EN ISO 13395 DIN EN ISO 7899-1 DIN EN ISO 6888-2 ISO 5815-1 NF T90-015-1 + 3 more
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COFRAC 1-0997 Limoges, FR
ISO 5815-1 EN 13087-2 DIN EN ISO 6579-1 NF U47-108 ISO 15705 + 3 more
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COFRAC 1-1046 Les Ponts De Ce, FR
NF V08-401 DIN EN ISO 6888-2 DIN ISO 16649-2 BS ISO 15214:1998 NF V08-409 + 3 more
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COFRAC 1-1356 Gap Cedex, FR
NF V 04-155 DIN EN ISO 21528-2 DIN ISO 16649-2 DIN EN ISO 6888-2 NF V08-054 + 3 more
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COFRAC 1-1105 Serres-Castet, FR
DIN EN 10002-1 ASTM E8/E 8M ASTM A 370 NF EN ISO 6892-1 (mรฉthodes A1, A2 et DIN EN 2002-001 + 3 more
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COFRAC 1-1021 Saint Beauzire, FR
ISO 14698-1 DIN EN ISO 17141 DIN EN 12469 DIN EN ISO 11138-2 DIN EN ISO 11737-2 + 3 more
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COFRAC 1-6990 La Ciotat, FR
DIN EN 13624 DIN EN 13727 DIN EN ISO 11930 DIN EN 17387 DIN EN ISO 22717 + 3 more
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COFRAC 1-1979 Limoges, FR
NF V 04-407 DIN EN ISO 6888-1 NF V04-403 0.95) based on BS ISO 21527-2:2008 DIN EN ISO 6888-2 + 3 more
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COFRAC 1-1160 Trinite, FR
NF T 90-412 DIN EN ISO 6888-1 DIN EN ISO 7899-1 DIN EN ISO 21528-2 DIN ISO 16649-2 + 3 more
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COFRAC 1-0714 Sophia Antipolis Cedex, FR
DIN EN ISO 21528-2 DIN EN ISO 6888-2 DIN ISO 16649-2 ISO 5815-1 BS ISO 15214:1998 + 3 more
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COFRAC 1-1173 Lagor, FR
DIN EN 14385 NF U47-002 NF X43-551 ETSI EN 301 489-1 V2.2.3 2019-11 DIN EN ISO 14403-2 + 3 more
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COFRAC 1-1847 Lyon 7Eme, FR
DIN EN 10002-1 BS ISO 9227:2022 DIN EN ISO 643 EN ISO 12624 DIN EN 10045-1 + 3 more
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LABSUD7

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COFRAC 1-7045 Sete, FR
NF X 43-050 (parties utiles NF X 43-269 NF X 43-050
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COFRAC 1-1734 La Capelle, FR
DIN EN ISO 8968-1 DIN 19662 DIN EN ISO 5534 DIN EN ISO 8968-4 DIN EN ISO 5764 + 3 more
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LDA 13

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COFRAC 1-1290 Marseille Cedex 13, FR
NF V08-106 DIN EN ISO 17294-2 NF T 90-412 NF U47-105 DIN EN ISO 7899-1 + 3 more
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COFRAC 1-2193 Bourg-En-Bresse Cedex 9, FR
DIN EN ISO 17604 NF V08-401 0.95) based on BS ISO 21527-2:2008 DIN EN ISO 6888-2 DIN ISO 16649-2 + 3 more
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LDAE 95

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COFRAC 1-1405 Cergy, FR
NF T 90-412 DIN EN ISO 7899-1 VDE 414-9-11 DIN EN ISO 10304-1 ISO 5815-1 + 3 more
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COFRAC 1-2350 Villepinte, FR
NF X 43-269 DIN 51750-3 NF X 46-032 NF EN 15934 โ€“ NF X 43-269 โ€“ Annexe K + 3 more
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LHEM

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COFRAC 1-0053 Gonfreville L'Orcher, FR
NF EN ISO 6892-1 Mรฉthode B DIN EN ISO 6508-1 ISO 4969 DIN EN 10002-1 DIN EN ISO 643 + 3 more
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LIDAL

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COFRAC 1-0600 Annecy, FR
NF T 90-412 DIN EN ISO 7899-1 DIN EN ISO 10304-1 DIN EN ISO 6888-2 DIN ISO 16649-2 + 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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