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-ML-13102-03-00 Frankfurt am Main, DE
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D-Dimere Freies Protein-S Antigen Protein S Antigen frei vWV:Ag Hemmkörper + 3 more
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Basophile Basophile absolut Eosinophile Eosinophile absolut Erythrozyten + 3 more
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Charakterisierung von akuten Akuten Leukämien B-Zellzahl (Immunstatus manuelles Differentialblutbild Zellzahlbestimmung + 3 more
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DAkkS D-ML-13134-02-01 Freiburg, DE
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DAkkS D-ML-13134-03-01 Freiburg, DE
anti-CMV IgG anti-CMV IgM CMV IgG Avidität Chikungunya Virus IgG Chikungunya Virus IgM + 3 more
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HLA-Antikörpertestung (Detektion) HLA-Antikörpertestung (Spezifizierung Klasse I und (Spezifizierung komplementbindender Antikörper + 3 more
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DAkkS D-ML-13134-10-01 Freiburg, DE
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DAkkS D-ML-13134-06-01 Freiburg, DE
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DAkkS D-ML-13134-12-00 Freiburg, DE
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DAkkS D-ML-13304-04-01 Marburg, DE
Anaerobier-Resistenz Bakterien-Resistenz Hefen-Resistenz Carbapenemasenachweis Cryptosporidien, Giardia + 3 more
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DAkkS D-ML-13304-03-00 Gießen, DE
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DAkkS D-ML-13304-07-01 Gießen, DE
DPYD-Genotypisierung vor 5 FU Therapie, SNV Polyposissyndrome (APC, BMPR1A, MUTYH, N (Custom made by TWIST), SNV Hereditärer Darmkrebs inklusive + 3 more
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DAkkS D-ML-13304-01-00 Gießen, DE
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DAkkS D-ML-13304-09-01 Marburg, DE
9-OH-Risperidon/Paliperidon Aripiprazol Citalopram Clozapin, Norclozapin Cyclosporin (CSA) + 3 more
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DAkkS D-ML-13304-08-01 Marburg, DE
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DAkkS D-ML-13304-10-00 Marburg, DE
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DAkkS D-ML-13217-01-00 Halle (Saale), DE
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DAkkS D-ML-13217-02-00 Halle (Saale), DE
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DAkkS D-ML-13217-04-00 Halle (Saale), DE
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DAkkS D-ML-13278-01-01 Hamburg, DE
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DAkkS D-ML-13278-09-00 Hamburg, DE
5-Fluorouracil-Toxizität (DPYD) Cowden-Syndrom (PTEN) Diffuses Magenkarzinom (CDH1) Hereditärer Brust- und Eierstockkrebs (HBOC), (BRCA1, BRCA2, CH + 3 more
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DAkkS D-ML-13278-03-00 Hamburg, DE
Factor) Treponema pallidum-Antikörper Treponema pallidum (TPHA) Treponema pallidium (VDRL) Escherichia coli Serotyp + 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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