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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UKAS 0642 Ross-on-Wye, GB
(HSG 248) โ€“ 2021 M003 based on HSG 248 (PCM) based on HSG 248 M002based on HSG 248 HSG 227 (2004)) + 2 more
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UKAS 0024 Southsea, GB
(HSG 248) - 2021 ASB/SOP/OM8 based on HSG 248 ASB/SOP/OM6 based on HSG 248 DIN EN 12697-11 on BS 4401:Part 3:1970(1986) + 3 more
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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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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 โ€“ Parts 1 to 10 Unfired pressur BS EN ISO 15614 and ASME IX + 3 more
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UKAS 9452 Whaddon, GB
DIN EN 61400-11 IEC 61400-11:2012/ AMD:2018
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Healthy Abode

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UKAS 10263 Harlow, GB
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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UKAS 4659 Newry, GB
(HSG 264, 2012) and Appx. 3 of HSG 227 (2004)) Executive guides HSG 264 (2012)
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UKAS 9868 Daventry, GB
DIN EN 1026 DIN EN 12046-2 BS 6375-1:2015 + A1:2016 and the DIN EN 1027 DIN EN 1629 + 3 more
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UKAS 24561 Hertford, GB
(HSG 264, 2012)
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UKAS 4041 Croxley Green, GB
staining based on HSG 248. (HSG 248) โ€“ 2021 (PCM) based on HSG 248 A007B based on BS EN15051-2:2013 +1:2016 DIN EN 12457-3 + 3 more
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UKAS 0123 Aberdeen, GB
DC Resistance DC VOLTAGE Temperatur-Simulation AC CURRENT Base metal thermocouples + 3 more
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UKAS 0102 Grays, GB
ASTM D3338 ASTM D 2624 ASTM D 5006 ASTM D 2386 ASTM D7153 + 3 more
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UKAS 1158 Chester, GB
UK 3725 based on ASTM D2163 and BS EN 15984:2011-07 IP 411, ISO 6251 ASTM D6667 mod ISO 8973 modified + 3 more
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UKAS 8401 Drighlington, GB
Appendix 5 of HSG 227 (2004))
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UKAS 10273 Dundee, GB
and Appx. 3 of HSG 227 (2004)) Executive guides HSG 264 (2012) (HSG 264, 2012)
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J B-Monitor

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UKAS 2075 Colwyn Bay, GB
(HSG 248) โ€“ 2021 No 1 based on HSG 248 โ€“ 2021 (PCM) based on HSG 248 โ€“ 2021 No 3 based on HSG 248 โ€“ 2021 (PCM) based on HSG 248 + 1 more
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UKAS 2154 Weston-super-Mare, GB
ISO 178 BS 5350:Part C13 BS 2782 Part 10 Method 1005 BS EN ISO 14125 MIL-STD 810G:2008 Method 501.5 + 3 more
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UKAS 31736 Nottingham, GB
MIL-STD-810G, Method 508:7 BS 2011:2.1 Ca:1977 (IEC 60068-2-10:2005+A1:2018, MIL-STD-810H, Method 508:8
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UKAS 4168 Smithfield, GB
DC CURRENT INSPECTION EQUIPMENT AC CURRENT 50 Hz RMS uncertainties may be increased.
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UKAS 29792 Southampton, GB
BS EN ISO 10140-2:2021 ISO 3745 ISO 7171 IEC 60601-1 accordance with BS EN ISO 5349-1
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KROHNE

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UKAS 0812 Wellingborough, GB
Mass Flow (Water) BetriebsรผbertragungsmaรŸ TEMPERATURE Instruments (NAWI)
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Kiwa

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UKAS 8896 Rasssau, GB
DIN EN 13079 BS 1212-4:1991 Clause 4, 13, 14 DIN EN 14622 BS 1212-3:1990 Clause 4 DIN EN 14623 + 3 more
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Kiwa

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UKAS 2360 Brentwood, GB
DIN EN 55011: 2018 IEC/CISPR 22 DIN EN 55016-2-1 IEC 61326-2-2: 2012 IEC 61000-6-1 + 3 more
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UKAS 0692 Cheltenham, GB
DIN EN 16510-2-3 DIN EN 16510-2-1 DIN EN 13229 DIN EN 16510-1 DIN EN 13240 + 3 more
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UKAS 23015 Mansfield, GB
and Appendix 3 of HSG 227 (2004)) Appendix 5 of HSG 227 (2004))
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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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