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
🇧🇪 NBN EN ISO 3382-1 🇩🇪 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 🇧🇪 NBN EN 60268-16 🇩🇪 DIN EN 60268-16 🇬🇧 BS EN 60268-16 🇫🇷 NF EN 60268-16 🇮🇹 UNI EN 60268-16
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ITA

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ENAC LE257 Zaragoza, ES
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ENAC LE554 Paterna, ES
Radiated emissions (CISPR 32) DIN EN 62271-102 DIN IEC 60060-1 IEC 61000-4-2: 2008 IEC 61000-4-4: 2012 + 3 more
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INSTITUTO TECNOLÓGICO Y GRÁFICO TAJAMAR, (ITGT) DEL CENTRO CULTURAL Y DEPORTIVO TAJAMAR

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ENAC LC10.149 Madrid, ES
(380 - 780 nm) 1 < R ≤ 100 0,01< DO ≤ 0,1 0,1 < DO ≤ 0,3 1,1 < DO <
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INSTITUTO VALENCIANO DE MICROBIOLOGIA

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ENAC LE1286 Bétera, ES
10/1500 DIN EN 1104 ISO 16869 ISO 22196 DIN 52170-2 + 3 more
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INSTRUMENTACIÓN ANALITICA

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ENAC LC10.164 Prat de Llobregat, ES
(500 ± 50) mPa · s (12500 ± 1250) mPa ·
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INSTRUMENTOS TESTO

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ENAC LC10.091 Cabrils, ES
2 · 10-6 mol/mol  C  100 · 10-6 mol/mo
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ISEVAL, S.L. (ISEVAL BY LIFTINSTITUUT)

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ENAC LE1754 Torrent, ES
UNE-EN ISO 16283-1 UNE-EN ISO 16283-2 UNE-EN ISO 16283-3
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J.P. ALCARAZ ELECTRONICA

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ENAC LC10.259 Cartagena, ES
CEM EL-001 CEM EL-014 CEM EL CEM ME
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ENAC LE1644 Paterna, ES
UNE-EN ISO 16283-1 UNE-EN ISO 16283-2 UNE-EN ISO 16283-3
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ISO/IEC 15408 ISO/IEC 18045 UNE 320001 ISO/IEC 19790 ISO/IEC 24759 + 2 more
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KROMSCHROEDER

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ENAC LC10.199 Hospitalet de Llobregat, ES
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LABACUSTIC

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ENAC LE1438 Vall d Uixó, ES
UNE-EN ISO 16283-1 UNE-EN ISO 16283-2 UNE-EN ISO 16283-3 UNE-EN ISO 140-4 UNE-EN ISO 140-7 + 1 more
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ENAC LE285 Alacant, ES
Railway passenger ride comfort evaluatio Railway wheel-rail interaction — roughne ISO 21527-1 ISO 5667-11 ISO 17353 + 3 more
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AOAC 985.35 UNE EN ISO 6869 AOAC 995.11 UNE-EN 17298
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Tensile testing of metallic materials (I Sound power — engineering methods for sm ISO 4832 ISO 1443 ISO 937 + 3 more
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LABORATORIO CENTRAL OFICIAL DE ELECTROTECNIA (LCOE) DE LA FUNDACIÓN PARA EL FOMENTO DE LA INNOVACIÓN INDUSTRIAL

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ENAC LE130 Madrid, ES
Salt spray / neutral salt fog test (ISO Radiated emissions (CISPR 32) DIN EN ISO 3650:1999 CA 15-3 DIN EN 50155 + 3 more
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LABORATORIO DE ACÚSTICA APLICADA DE LA UNIVERSIDAD DE LEÓN

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ISO 2631-2 UNE-EN ISO 16283-1 UNE-EN ISO 16283-2 UNE-EN ISO 16283-3 UNE-EN ISO 3382-2 + 3 more
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LABORATORIO DE CALIBRACIÓN DE INSTRUMENTOS ACÚSTICOS (LACAINAC)

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UNE-EN 61672-3 UNE-EN 60651 UNE-EN 60804 UNE-EN 61252 UNE-EN IEC 60942 + 3 more
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LABORATORIO DE ENSAYOS ACÚSTICOS DE LA E.T.S. DE INGENIEROS INDUSTRIALES DE LA U.P.M.(LABENAC)

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UNE-EN ISO 16283-1 UNE-EN ISO 16283-2 UNE-EN ISO 16283-3 UNE-EN ISO 140-4 UNE-EN ISO 140-7 + 1 more
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LABORATORIO DE MEDIDAS MAGNÉTICAS "JOSÉ PALACIOS BREGEL" DE LA ESCUELA TÉCNICA SUPERIOR DE INGENIERÍA Y DISEÑO INDUSTRIAL DE LA U.P.M.

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ENAC LC10.010 Madrid, ES
8 mT/A ≤ B/I < 500 mT/A 80 mT ≤ B ≤ 1,1 T 0,2 mT ≤ B < 1,1 T 0 mT ≤ B < 80 mT 10 Wb <   0,2 Wb + 2 more
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3,5 kPa  P  70 kPa 70 kPa < P  700 kP 3,5 kPa  P  2,0 MPa 2,0 MPa < P  7,0 3,5 kPa  P  20 kPa 20 kPa < P  70 kPa 100 kPa  P  6,1 MPa 6,1 MPa < P  100 100 kPa  P 70 MPa + 3 more
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LABORATORIO DE METROLOGÍA Y METROTECNIA DE LA E.T.S.I. INDUSTRIALES DE LA U.P.M.

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nach DIN EN ISO 3650:1999 EURAMET CG-6 ISO 5436-1 CEM DI-013 CEM DI-012 + 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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