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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Widerstands- -25 °C Railway braking — urban guided transport –25 °C Railway vehicle body structural requirem Thermoelementsensor -25 °C + 3 more
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UCL Umwelt Control Labor

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DIN EN ISO 3170 DIN 19698-1 DIN 19698-2 DIN 19698-5 DIN 19698-6 + 3 more
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UKAS 1645 London, GB
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IEC 61851-1: 2010 IEC 61851-23 IEC 62109-1 IEC 62109-2 IEC 61010 + 3 more
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ACCREDIA 00999 Carugate, IT
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Messschieber für 0 mm Außen-, Innen- und Bügelmessschrauben 0 mm Messuhren mit Feinzeiger + 3 more
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ENAC LC10.082 Legutiano, ES
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UNE 77061 SM 4500-NO-3 E UNE-EN ISO 7027-1 ISO 15923-1 UNE-EN ISO 7393-2 + 3 more
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UTILES Y MAQUINAS INDUSTRIALES, S.A. (UMI)

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ENAC LC10.024 Zamudio, ES
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Uniper Technologies

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DIN EN 13284-1 BS EN ISO 23210:2009 requirements of BS EN 14181:2014 IEC 60519-11 requirements of BS EN + 3 more
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Universal Instrument Services

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UKAS 0125 Blaby, GB
Chronic progressive external LENGTH Micrometer heads Dial gauges and dial test Depth + 3 more
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University of Salford

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DIN EN 12667 ISO 8301 DIN EN 12939 DIN EN 12664 DIN EN ISO 13163 + 3 more
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University of Salford

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UKAS 0801 The Crescent, GB
Pistonphones Microphones LS2/WS2 microphones based: Reverberation Time
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University of Salford

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BS EN ISO 10140-2:2021 DIN EN ISO 11654 ISO 354 ISO 7171 ASTM E90-09(2016) + 3 more
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Universität Regensburg Institut für Humangenetik

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Universität Stuttgart Institut für Gebäudeenergetik, Thermotechnik und Energiespeicherung

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DAkkS D-PL-11027-01-01 Stuttgart, DE
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Universität Stuttgart Materialprüfungsanstalt

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DAkkS D-K-11027-01-02 Stuttgart, DE
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Universität Stuttgart Materialprüfungsanstalt Universität Stuttgart

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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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