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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ENAC LE1260 Cáceres, ES
UNE-EN ISO 10704 UNE-EN ISO 10703 EPA 903.0 EPA 909.0 ISO 13161 + 3 more
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CEM DI-025 CEM DI-018 UNE-EN ISO 21920-3 CEM DI-009 CEM DI-003 + 3 more
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UNE-EN ISO 7887 UNE-EN ISO 17852 UNE-EN ISO 8467 ISO 7150-1 SM 2510 B + 3 more
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ENAC LC10.195 Paterna, ES
ISO 5-3 ISO 2813 UNE-EN ISO 9342-1 UNE-EN ISO 8598-1 ISO 3664 + 3 more
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ISO 11290-1 AOAC 991.43 UNE-EN ISO 15216-2 UNE-EN ISO 6579-1 UNE 77324 + 3 more
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UNE 10523 UNE 27888 UNE 7027-1 ISO 23695 UNE-EN ISO 9308-1 + 3 more
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SM 2540 F SM 2540 C UNE-EN ISO 7027 SM 2520 B SM 2510 B + 3 more
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UNE-EN 7027-1 UNE-EN ISO 10523 SM 2520 B UNE EN 27888 UNE-EN 872 + 3 more
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LABSEL

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ACCREDIA 01258 Lequile, IT
DIN EN 12457-2 DIN EN 15634-1 DIN EN 13039 DIN EN ISO 10304-1 UNI 10802 + 3 more
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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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DAkkS D-ML-13087-01-00 Schüttorf, DE
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Blutsenkung Benzol Ethylbenzol Aceton, Isopropanol, Methanol Ethanol + 3 more
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Blutsenkung Benzol Ethanol Ethylbenzol Aceton, Isopropanol, Methanol + 3 more
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ACCREDIA 00086 Prato, IT
IEC 60695-2-11 IEC 60332-2-2:2004 DIN EN ISO 12952-2 DIN EN 60754-2 DIN EN ISO 12952-1 + 3 more
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ENAC LE2494 Paterna, ES
ISO/IEC 18045 ISO/IEC 15408 UNE 320001
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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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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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