Scope
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
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DIN EN ISO 3382-1
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BS EN ISO 3382-1
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NF EN ISO 3382-1
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UNI EN ISO 3382-1
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UNE EN ISO 3382-1
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NEN EN ISO 3382-1
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DIN EN 60268-16
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BS EN 60268-16
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NF EN 60268-16
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UNI EN 60268-16
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UNE EN 60268-16
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NEN EN 60268-16
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I2 Analytical
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staining based on HSG 248.
(HSG 248) – 2021
(PCM) based on HSG 248
A007B based on BS EN15051-2:2013 +1:2016
DIN EN 12457-3
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ITS Testing Services (UK)
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BS EN ISO 1833-1:2020
And the following parts of ISO 1833
ISO 1833-4:2017/EU Reg. method 2ISO 1833
ISO 1833-3: 2019
ISO 1833-6: 2019
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ASTM D 5443
ASTM D2892 (modified)
ASTM D2503
ASTM D4052 (modified)
ASTM D2887 (modified)
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DC Resistance
DC VOLTAGE
Temperatur-Simulation
AC CURRENT
Base metal thermocouples
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ITS Testing Services (UK)
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UK 3725 based on ASTM D2163
and BS EN 15984:2011-07
IP 411, ISO 6251
ASTM D6667 mod
ISO 8973 modified
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DC Resistance
AC VOLTAGE (continued)
AC POWER
AC CURRENT
Generation (continued)
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Intona
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and Appx. 3 of HSG 227 (2004))
Executive guides HSG 264 (2012)
(HSG 264, 2012)
J B-Monitor
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(HSG 248) – 2021
No 1 based on HSG 248 – 2021
(PCM) based on HSG 248 – 2021
No 3 based on HSG 248 – 2021
(PCM) based on HSG 248
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JCS Technology
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ISO 178
BS 5350:Part C13
BS 2782 Part 10 Method 1005
BS EN ISO 14125
MIL-STD 810G:2008 Method 501.5
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Jackson and Keay
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BS EN ISO 11623:2015
BS EN ISO 18119:2018+A1:2021
BS EN ISO 10460:2018
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Javer Labs
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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
Johnson and Allen
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DC CURRENT
INSPECTION EQUIPMENT
AC CURRENT 50 Hz RMS
uncertainties may be increased.
K B Calibration Services
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LENGTH
ended (excluding length bars)
Chronic progressive external
Dial gauges and dial test
Caliper Gauges
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KP Acoustics Research Labs
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BS EN ISO 10140-2:2021
ISO 3745
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IEC 60601-1
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Kiwa
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DIN EN 13079
BS 1212-4:1991 Clause 4, 13, 14
DIN EN 14622
BS 1212-3:1990 Clause 4
DIN EN 14623
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Kiwa
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DIN EN 55011: 2018
IEC/CISPR 22
DIN EN 55016-2-1
IEC 61326-2-2: 2012
IEC 61000-6-1
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Kiwa
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DIN EN 16510-2-3
DIN EN 16510-2-1
DIN EN 13229
DIN EN 16510-1
DIN EN 13240
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Kiwa
Active
DIN EN 55011: 2018
AS/NZS CISPR 11:2004
EN 55011 2016 + A1 2017 + A11 2020
IEC/CISPR 14-1
DIN EN 55013
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Kordus Consulting
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and Appendix 3 of HSG 227 (2004))
Appendix 5 of HSG 227 (2004))
Kova Asbestos Consultants
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(HSG 248) – 2021
(PCM) based on HSG 248
SAS 02 based on HSG 248
Kovia
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Appendix 5 of HSG 227 (2004))
HSG 227 (2004)
HSG 264 (2012) and Appendix 3 of
LAB (UK)
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(HSG 248) – 2021
(PCM) based on HSG 248
MAAM 05 based on HSG 248
(HSG 264, 2012)
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