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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21 Countries

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ENAC LE236 Loeches, ES
ASTM D 4052 ASTM D 5191 ASTM D 381 ASTM D 130 DIN EN ISO 22854 + 3 more
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ENAC LC10.004 Majadahonda, ES
CEM DI-013 UNE 17-710-78
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ENAC LC10.018 Eibar, ES
Technical cleanliness of fluid system co ISO 4967 ASTM B 117 ASTM E45 ISO 5667-10 + 3 more
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ENAC LE858 Boecillo, ES
UNE-EN ISO 2178 UNE-EN ISO 6892-1 UNE-EN ISO 6507-1 UNE-EN 60068-2-6 UNE-EN 60068-2-27 + 3 more
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ENAC LE154 Gijón, ES
ASTM E 18-20 ASTM E 415 ASTM E 1086 ASTM E 8 ASTM E 21 + 3 more
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ENAC LE2107 Getafe, ES
delA, 2615_2617 delAAG, 2850 DIN 51603-1 ISO 6721-11 ISO 13256-2 DIN EN 2243-1 + 3 more
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ENAC LE024 Derio, ES
Hand-arm vibration — practical guidance rs1801133 / A1298C; rs1801131 rs11887534 ISO 5658-2 ISO 5660-1 + 3 more
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ENAC LC10.116 Puerto de Santa María, ES
3 mV  U < 330 mV 0,33 V  U < 3,3 V 3,3 0 mV  U < 200 mV 200 mV  U < 2 V 2 V  0 mV  U  100 mV 0,1 V < U  1 V 1 V < 5 mV  U  30 V 10 mV  U < 33 mV 50 Hz  f  1 kHz 1 kH + 3 more
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ENAC LE2121 Llinars del Valles, ES
ISO 9994 ISO 22702 ASTM F400 ASTM F2201
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GIKE

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ENAC LE614 Donostia-San Sebastián, ES
UNE-EN 12390-3 UNE-EN 12350-2 UNE-EN 12390-2 UNE-EN 933-1 UNE-EN 933-8 + 3 more
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ENAC LC10.194 Palau-solità i Plegamans, ES
EURAMET cg-18 CEM cg-19 UNE-EN ISO 14644-3 UNE-EN ISO 14644-1
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ENAC LE1996 Burgos, ES
ISO 3795 UNE-EN ISO 6507-1 UNE-EN ISO 6508-1 UNE-EN ISO 13934-1 UNE-EN ISO 105 + 3 more
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ENAC LC10.219 Galapagar, ES
9,8 L ≤ V ≤ 10,2 L (25 L/h ≤ Q ≤ 500 L/h 98 L ≤ V ≤ 104 L (250 L/h ≤ Q ≤ 5000 L/h 970 L ≤ V ≤ 1005 L (2500 L/h ≤ Q ≤ 20000 1305 L ≤ V ≤ 1350 L (5000 L/h ≤ Q ≤ 8000 2660 L ≤ V ≤ 2700 L (5000 L/h ≤ Q ≤ 1000
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ENAC LE2005 Aranda de Duero, ES
UNE-EN ISO 16283-1 UNE-EN ISO 16283-2 UNE-EN ISO 16283-3 UNE-EN ISO 3382-2
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ENAC LC10.220 San Sebastián de los Reyes, ES
ISO 16063-21 UNE-EN 61672-3 UNE-EN 60651 UNE-EN 60804 UNE-EN IEC 60942 + 3 more
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ENAC LE159 Santa Oliva, ES
Salt spray / neutral salt fog test (ISO Spezifisches IgE gegen 112 ISO 20653 DIN EN IEC 60068-2-11 DIN EN 60068-2-64 + 3 more
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ENAC LC10.228 Arganda del Rey, ES
UNE-EN 61672-3 UNE-EN 60651 UNE-EN 60804 UNE-EN 61252 UNE-EN IEC 60942 + 1 more
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ENAC LE2176 Sabadell, ES
ISO 5667-11 ISO 5667-10 ISO 5667-5 UNE EN 27888 UNE 100030 + 3 more
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ENAC LE774 Sevilla, ES
ISO 7150-1 BS ISO 9096:2017 EPA 3 UNE-EN ISO 16911-1 UNE-EN 15058 + 3 more
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ENAC LE2742 Maliaño, ES
UNE-EN 1793-5 UNE-EN 1793-6
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ENAC LE2882 Ripollet, ES
UNE-EN 60404-14 0 mT ≤ B ≤ 75,7 mT (196 ± 3) mT (990 ± 4 3 mT ≤ B ≤ 300 mT 300 mT ≤ B ≤ 1600 mT
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ENAC LE2461 Zamudio, ES
UNE-EN ISO 16283-1 UNE-EN ISO 16283-2 UNE-EN ISO 3382-2 UNE-EN ISO 140-4 UNE-EN ISO 140-7
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ENAC LE1703 Madrid, ES
ISO 11731 WP04 based upon BS EN ISO 10304- EPA 200.8 ISO 15061 UNE-EN ISO 7027-1 + 3 more
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INTA

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ENAC LC10.007 Torrejón de Ardoz, ES
ASTM D 4052 ASTM D 93 ASTM D 2386 ASTM D 86 ASTM D 976 + 3 more
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ENAC LE1285 Torrejón de Ardoz, ES
ISO 11665-4 UNE-EN ISO 10704 UNE 73350-1 UNE 73311-5 UNE 31010 + 1 more
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Industries

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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