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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DAkkS D-PL-21117-01-00 Bremen, DE
DIN EN 61400-11 IEC 61400-11, Edition 2.1 DIN 45645-1 DIN 45680 Bbl. 1
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ACCREDIA 00473 Stazzano, IT
ISO 17604 DIN EN 12457-2 DIN EN ISO 6888-1 ISO 19250 EPA 3630 + 3 more
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DAkkS D-K-20800-01-01 Bonn, DE
− Scheinwerfer-Einstell-Prüfsystem − Abgasmessgeräte für Fremdzündungsmotor − Abgasmessgeräte für Kompressionszündun Railway brake — magnetic track brakes (U nur Vor-Ort-Kalibrierungen + 3 more
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TARKETT France

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COFRAC 1-0576 Sedan, FR
DIN EN ISO 717-2 DIN EN ISO 10140-3 DIN EN 1081 DIN EN ISO 105-B02 DIN EN ISO 9239-1 + 3 more
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TAUW

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RvA L429 Deventer, NL
NEN 2826 NEN-EN 14791 2 ASTM D4157-13 ETSI EN 301 489-1 V2.2.3 2019-11 DIN EN 14792 + 3 more
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TC Laser

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DAkkS D-PL-22493-01-00 Eppertshausen, DE
DIN EN 50689 VDE 0837-689 DIN 56912 DIN EN 60825-1 VDE 0837-1 + 3 more
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ENAC LC10.232 Zaragoza, ES
CEM Procedimiento
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ENAC LE1242 Valencia, ES
UNE-EN ISO 16283-3 DIN EN ISO 16283-1 UNE-EN ISO 3382-2 BS EN ISO 16283-2:2020
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COFRAC 1-5598 Crolles, FR
DIN ISO 16000-6 DIN ISO 16000-3 DIN EN ISO 16017-2 DIN EN 16339 DIN ISO 16000-4 + 3 more
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COFRAC 1-6125 Aurillac Cedex, FR
DIN EN ISO 17294-2 DIN EN ISO 14403-2 NF U47-105 NF T 90-412 DIN EN ISO 7899-1 + 3 more
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COFRAC 1-7302 Valence Cedex 9, FR
DIN EN ISO 14403-2 VDE 414-9-11 DIN ISO 11465 DIN EN ISO 10304-1 NF-T 90-029 + 3 more
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COFRAC 1-6123 Le Puy En Velay Cedex, FR
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COFRAC 1-6949 Nevers Cedex, FR
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TES Time Elektronik Struck

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DAkkS D-K-15097-01-01 Pinneberg, DE
Elektrische Messgrößen Gleichstrom- und Niederfrequenzmessgröße Railway brake — magnetic track brakes (U − Gleichspannung − Gleichstromstärke + 3 more
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TESTING Bluhm & Feuerherdt

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DAkkS D-K-20041-01-01 Berlin, DE
Tensile testing of metallic materials (I Kraft (WPM) 0,1 kN Werkstoffprüfmaschinen Kraftmessgeräte 0,1 kN Acoustics — tonality assessment (DIN 456 + 1 more
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TFI Aachen

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DAkkS D-PL-17152-01-00 Aachen, DE
ISO 7176-16 ISO 8191-1 ISO 8191-2 EN ISO 11925-2 DIN EN 1021-1 + 3 more
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ENAC LE2333 Castellgalí, ES
DIN EN 16615 DIN EN 17658 DIN EN 13697 IEC 60127-6 DIN EN 13727 + 3 more
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DAkkS D-K-17684-01-00 Schalkau, DE
Kraft (WPM) Kraftmesseinrichtungen von Werkstoffprüfmaschinen Acoustics — tonality assessment (DIN 456 Länge (WPM) + 3 more
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TKMS ATLAS ELEKTRONIK GmbH Umweltsimulationszentrum

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DAkkS D-PL-11197-01-01 Bremen, DE
DIN EN IEC 60068-2-13 DIN EN IEC 60068-2-52 DIN EN 60068-2-64 DIN EN 60068-2-78 DIN 53505 + 3 more
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TLR International Laboratories

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RvA L059 Rotterdam, NL
DIN EN ISO 3596 DIN EN ISO 14780 BS ISO 18283:2022 DIN EN ISO 10893-6 DIN EN 61442 + 3 more
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TOXILABO

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COFRAC 1-1941 Nantes, FR
NF ISO 21438-3 NF X 43-264 NF ISO 21438-1 ISO 16200-2 NF ISO 21438-2 + 3 more
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TRAC Associates

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UKAS 8644 Bury, GB
(HSG 264, 2012) HSG 264 (2012) and Appx. 3 of HSG 227 (2004))
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TRADELAB, S.L. (Unipersonal)

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ENAC LC10.184 Montmeló, ES
UNE-EN 60942 UNE-EN 61672-3 UNE-EN 60804 UNE-EN 60651 UNE-EN 61252 + 3 more
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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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