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
1,670 Accredited labs
18 Countries

Showing 126โ€“150 of 349 labs

UKAS 4279 Heaton Mersey, GB
DIN EN 14791 IEC 60519-11 BS ISO 11338-1:2003 DIN EN 13284-1 DIN EN 14385 + 3 more
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UKAS 4225 Deeside, GB
(HSG 248) โ€“ 2021 (PCM) based on HSG 248 based on BS EN 12457 DIN EN 1948-4 dbSNP rs1800562, rs1799945, rs1800730, r
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UKAS 0170 Heaton Mersey, GB
(HSG 264, 2012) HSG 227 (2004)) (HSG 248) โ€“ 2021 (PCM) based on HSG 248
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UKAS 0621 Wednesbury, GB
DIN EN 1303 DIN EN 12209 DIN EN 14846 BS 3621:2007+A2:2012 BS 8621:2007+A2:2012 + 3 more
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UKAS 9141 Sutton Fields, GB
DIN EN 12279 DIN EN 12278 -22018G/A, rs182549 DIN EN 303-2 DIN EN 15502-2-1 + 3 more
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UKAS 2604 Wentloog, GB
(HSG 248) โ€“ 2021 (Section 2) based on HSG 248 (Section 4) based on HSG 248 staining based on HSG 248 (HSG 264, 2012) + 3 more
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UKAS 0441 Glasgow, GB
HSG 264 (2012) and Appx. 3 of (HSG 264, 2012) HSG 227 (2004)) Appendix 5 of HSG 227 (2004))
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UKAS 1755 Redditch, GB
(HSG 248) โ€“ 2021 SOP/11, based on HSG 248 (PCM) based on HSG 248
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UKAS 1227 Fareham, GB
(HSG 248) โ€“ 2021 DIN EN 12457-2 3.02 based on HSG 248 staining based on HSG 248. (PCM) based on HSG 248
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Envirolab

Active
UKAS 1247 Hattersley, GB
(HSG 248) โ€“ 2021 (PCM) based on HSG 248
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UKAS 2499 Pontypridd, GB
requirements of BS EN 15259:2007 DIN EN 14181 DIN EN 13126-19 DIN EN 15058 DIN EN 14789 + 3 more
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UKAS 2719 Cannel Row, GB
(HSG 248) โ€“ 2021 TP003 based on HSG 248 (PCM) based on HSG 248 TP002 based on HSG 248 Appendix 5 of HSG 227 (2004) + 1 more
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UKAS 27551 Crook, GB
(HSG 264, 2012)
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UKAS 4238 Hereford, GB
Appendix 5 of HSG 227 (2004) (HSG 264, 2012)
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UKAS 2099 Exeter, GB
(HSG 248) โ€“ 2021 (PCM) based on HSG 248 SP1 based on HSG 248
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UKAS 9608 Basildon, GB
(HSG 264, 2012) and Appx. 3 of HSG 227 (2004)) Executive guides HSG 264 (2012)
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Environtec

Active
UKAS 2030 Chelmsford, GB
(HSG 248) โ€“ 2021 (PCM) based on HSG 248 staining based on HSG 248
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UKAS 28785 Wolverhampton, GB
(HSG 248) โ€“ 2021 SOP 3 based on HSG 248 (PCM) based on HSG 248
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UKAS 8007 Corringham, GB
(HSG 248) โ€“ 2021 (PCM) based on HSG 248 TP03 based on HSG 248
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UKAS 2734 Darlington, GB
(HSG 248) โ€“ 2021 TP005, based on HSG 248 (PCM) based on HSG 248
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UKAS 2183 Newmarket, GB
staining based on HSG 248. (PCM) based on HSG 248 (HSG 248) โ€“ 2021 DIN EN 12457-2 DIN EN 12457-3
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UKAS 0452 Bideford, GB
AC CURRENT AC VOLTAGE (continued) Measurement (continued) DC CURRENT Generation (continued) + 3 more
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UKAS 1574 York, GB
IEC 61000-6-1 IEC 61000-4-29: 2000 DIN EN 62233 IEC 61000-4-11: 2004 DIN EN 61000-4-12 + 3 more
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UKAS 2262 Ipswich, GB
ISO 6579-1 ISO 6888-1 ISO 16649-2 ISO 11290-1 1) AM/M/11-2 based on BS EN + 3 more
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UKAS 9659 Grimsby, GB
Method 15.2 based on BS EN ISO ISO 15213-2 Method 9.8 based on BS EN BS EN Method 5.11 based on BS EN ISO Method 4.3 based on BS EN ISO + 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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