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
🇩🇪 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 🇩🇪 DIN EN 60268-16 🇬🇧 BS EN 60268-16 🇫🇷 NF EN 60268-16 🇮🇹 UNI EN 60268-16 🇪🇸 UNE EN 60268-16 🇳🇱 NEN EN 60268-16
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0,2 0,003 bis 0,006 (HLA DQ8 (HLA DQB*03:02) ISO 18787 BS EN 15662 DIN EN ISO 6888-1 + 3 more
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ENAC LE582 Sant Quirze del Valles, ES
UNE-EN ISO 6579-1 UNE-EN ISO 6222 UNE-EN 26777 UNE-EN ISO 7027-1 en 31-7-79 (BOE 29-08-79) + 3 more
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COFRAC 1-7423 Chalon-Sur-Saône, FR
DIN EN 17387 DIN EN 13697
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DAkkS D-PL-18867-01-02 Eching am Ammersee, DE
ISO 10381-8 DIN ISO 10381-1 DIN ISO 10381-2 DIN ISO 10381-3 DIN ISO 10381-4 + 3 more
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DIN EN ISO 6246 DIN 53160-1 DIN EN ISO 22854 (LBLS) (OMIM 611105) (c.228- DIN EN 13016-1 + 3 more
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BS EN ISO 10140-2:2021 BS EN ISO 10140-3:2021 BS EN ISO 717-2:2020 ISO 7171 BS EN ISO140-3:1995 (withdrawn) + 3 more
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DIN EN ISO 7730 ISO 5667-5 ISO 17604 DIN EN ISO 6888-1 ISO 8573-4 + 3 more
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UKAS 0823 Reykjavik 104, IS
Nominal value TEMPERATURE See Notes 1 to 3 TORQUE Case Manager: BC4 + 1 more
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UKAS 1053 Bracknell, GB
ISO 11451-1 IEC 62442-1 DIN EN 16147 DIN EN 12101-3 DIN EN 14825 + 3 more
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ENAC LE378 Sant Cugat del Vallès, ES
UNE-EN 13284-2 UNE-EN 15259 UNE-EN 16911-2 UNE-EN 13284-1 UNE EN 1911 + 3 more
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(HSG 248) – 2021 14B based on HSG 248 DIN EN 12021 14A based on HSG 248 (PCM) based on HSG 248 + 2 more
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RvA L581 Boven-Leeuwen, NL
AM09 based on BS ISO 21527-1: DIN EN ISO 21528-2 DIN EN ISO 4833-2 BS ISO 15214:1998 0.95) based on BS ISO 21527-2:2008
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DAkkS D-K-15206-01-00 Oberdischingen, DE
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Salmonella spp. Antikörper) Treponema pallidum (Lues) Thrombozytäre Antikörper dysenteriae), Vibrio cholerae + 3 more
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Okkultes Blut Großes Blutbild Kleines Blutbild Retikulozyten Thrombozyten + 3 more
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2C-B 2C-I 3-Hydroxy-Bromazepam 5-Hydroxyindolessigsäure 6-Acetylcodein + 3 more
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Zelldifferenzierung Erythrozyten Großes Blutbild Hämoglobin Kleines Blutbild + 3 more
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Hämoglobin (immunologisch) CA 125 CA 15-3 CA 19-9 CA 72-4 + 3 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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