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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NF X 43-269 NF X 43-050 ISO 22262-1 NF X 43-269 - Annexe K NF X 43-298 + 3 more
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ISO 10381-8 DIN ISO 10381-1 DIN ISO 10381-2 DIN ISO 10381-3 DIN ISO 10381-4 + 3 more
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DIN EN ISO 18119 BS EN ISO 10460:2018 BS EN ISO 11623:2015 BS EN 15888:2014 BS EN 14876:2007/Internal proceduresDiss + 2 more
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DIN EN ISO 7730 ISO 5667-5 ISO 17604 DIN EN ISO 6888-1 ISO 8573-4 + 3 more
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UKAS 1053 Bracknell, GB
ISO 11451-1 IEC 62442-1 DIN EN 16147 DIN EN 12101-3 DIN EN 14825 + 3 more
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UNE-EN 13284-2 UNE-EN 15259 UNE-EN 16911-2 UNE-EN 13284-1 UNE EN 1911 + 3 more
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AM09 based on BS ISO 21527-1: DIN EN ISO 21528-2 DIN EN ISO 4833-2 BS ISO 15214:1998 0.95) based on BS ISO 21527-2:2008
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DIN EN ISO17892-12 DIN 18134 DIN 18122-2 DIN 19698-1
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ACCREDIA 01119 Santa Croce sull'Arno, IT
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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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