DIN 45680

Low-Frequency Noise Measurement and Assessment

DIN 45680 specifies procedures for measuring and evaluating low-frequency noise (typically 8 Hz to 160 Hz) immissions in buildings and indoor environments. Low-frequency noise from sources such as wind turbines, industrial equipment, traffic, and HVAC systems can cause annoyance and health effects even at sound pressure levels below conventional noise limits. The standard defines frequency-weighted assessment methods, measurement locations, and evaluation criteria specific to low-frequency phenomena. Accreditation for this test method enables laboratories to conduct specialized assessments required for wind energy projects, industrial operations, and building acoustics investigations in sensitive environments.

What it measures

  • Sound pressure levels in the low-frequency range (8–160 Hz)
  • Low-frequency weighted acceleration and vibration metrics
  • Frequency content and tonal characteristics of low-frequency sources
  • Indoor sound field distribution and room resonance effects
  • Infrasound component presence and magnitude
🇩🇪 DIN EN ISO 389-7 🇬🇧 BS EN ISO 389-7 🇫🇷 NF EN ISO 389-7 🇮🇹 UNI EN ISO 389-7 🇪🇸 UNE EN ISO 389-7 🇳🇱 NEN EN ISO 389-7 🇩🇪 DIN EN ISO 226 🇬🇧 BS EN ISO 226 🇫🇷 NF EN ISO 226 🇮🇹 UNI EN ISO 226 🇪🇸 UNE EN ISO 226 🇳🇱 NEN EN ISO 226
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CEM ME-003
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CEM ME-003 CEM DI-008 UNE-EN ISO 6789-2 CEM DI-020 CEM DI-005 + 3 more
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COFRAC 1-7447 Venelles, FR
NF X 43-269 ISO NF X 43-257 NF X 43-050 ISO 16000-7
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ACCREDIA 00378 Pereto, IT
DIN EN 1793-5 ASTM E 415 21 DIN EN 14726 DIN EN 1794-1 DIN EN 1794-2 + 3 more
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UNE-EN ISO 16283-1 UNE-EN ISO 16283-3 UNE-EN ISO 16283-2
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DIN ISO 16000-3 DIN ISO 16000-6 DIN EN ISO 16017-1 DIN ISO 12884 EN 16516 + 3 more
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COFRAC 1-6043 Sainte Helene Du Lac, FR
NF X 43-269 NF X 43-050 NF X43-050 (parties utiles de ISO 16000-7
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ENAC LE2541 Erandio, ES
ISO 10469:2006)
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COFRAC 1-5853 Saint-Pierre-De-Chandieu, FR
NF X 43-269 NF X43-050 (parties utiles de ISO 22262-1 NF X 43-257 NF X 43-050 + 1 more
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COFRAC 1-1364 Saint-Quentin-Fallavier, FR
DIN EN 14902 DIN ISO 16000-3 DIN EN ISO 16017-1 DIN EN ISO 16017-2 DIN ISO 16000-4 + 3 more
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COFRAC 1-5578 Villebon-Sur-Yvette, FR
NF T 90-412 0.95) based on BS ISO 21527-2:2008 DIN EN ISO 6888-2 DIN EN ISO 16649-3 DIN EN ISO 6888-3 + 3 more
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DAkkS D-PL-14162-01-03 Altenberge, DE
DIN EN ISO 15587-1 DIN EN ISO 15587-2 DIN EN ISO 14403-2 DIN 38405-4 DIN 38405-8 + 3 more
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UKAS 1282 Templeborough, GB
on BS 4401:Part 3:1970(1986) ISO 12966-2 AM/C/108 based on BS EN ISO BS 684 2.14:2001 BS EN 288-Part 9 :1999 + 3 more
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ALSTOM Transport VPF

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COFRAC 1-5603 Petite-Foret, FR
DIN EN ISO 11546-1 prEN 16185-2 EN 15595 (hors essais au
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DAkkS D-K-15033-01-00 Berlin, DE
1,5 V/m bis 30 V/m 3 V/m bis 100 V/m 1 GHz bis 8 > 8 GHz bis 18 - Gleichspannung + 3 more
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AMETEK GmbH Geschäftsbereich Taylor Hobson

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DAkkS D-K-15032-02-00 Weiterstadt, DE
Railway brake — magnetic track brakes (U auch als Vor-Ort-Kalibrierung Rillentiefe Pt auf 0,2 µm Tiefeneinstellnormalen Rauheit auf Raunormalen + 3 more
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COFRAC 1-6507 Vandoeuvre Les Nancy, FR
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Industries

Renewable energy (wind turbine) development and operation Industrial noise and vibration control Building acoustics and occupant protection Environmental health and public protection Regulatory compliance and permit assessment

Related Standards

  • DIN 45681 Acoustics — Tonality assessment
  • ISO 389-7 Acoustics — Reference zero for the calibration of audiometric equipment — Part 7: Reference threshold of hearing under free and diffuse sound field conditions
  • ISO 226 Acoustics — Normal equal-loudness-level contours

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