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-13235-01-00 Kaiserslautern, DE
freies Protein S vWF-Aktivität (Ristocetin) Methylmalonsäure Amiodaron/Desethylamiodaron Ethosuxemid + 3 more
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angeborener Chromosomensatz erworbener Chromosomensatz Aarskog-Scott Syndrom Laborpanel 1 FGD1 + 3 more
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DAkkS D-ML-20912-01-00 Köln, DE
B-Zellzahl (Immunstatus T-Non-Hodgkin-Lymphome Akute myeloische Leukämie Akute lymphatische Leukämie Multiples Myelom (Plasmazellen) + 3 more
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DAkkS D-ML-13073-01-00 Köln, DE
Automatisches Blutbild Differentialblutbild, prozentual Retikulozyten Zellzahl Natriumchlorid + 3 more
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DAkkS D-ML-13413-01-00 Leverkusen, DE
Blutsenkung Thrombozytenfunktion Ecstasy, Kokain, Opiate, Methadon, Bupre qualitativ, quantitativ Drogenscreening (Amphetamine + 3 more
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DAkkS D-ML-20454-01-01 Bonn, DE
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Basophile absolut Basophile % Eosinophile absolut Eosinophile % Erythrozyten + 3 more
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DAkkS D-ML-22580-01-00 Oldenburg, DE
Unklare Erkrankungen mit wahrscheinlich erblicher Ursache HPO Terms; SNV, CNV Fluoropyrimidin Toxizität (DPD-Gen: dbSNP rs3918290, rs55886062, rs67376798, + 3 more
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angeborener Chromosomensatz Nummerische Veränderungen Chromosomen 13, 18, 21, X und ldentifizierung kleinster chromosomaler/numerischer + 3 more
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DAkkS D-ML-13245-02-00 Dresden, DE
Multiplate-Analyse (TRAP, ADP) Thrombozytenaggregation Born) Organische Säuren (Profil) Metanephrin, Normetanephrin + 3 more
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DAkkS D-ML-22497-01-00 Greifswald, DE
Familiäre Adenomatöse Polyposis Syndrome (APC, MUTYH) STK11, SMAD4 ), TruRisk® -Panel [SNV, CN Familiäre Polyposis-Syndrome [FAP] (APC, MUTYH) + 3 more
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DAkkS D-ML-17445-01-00 Dessau-Roßlau, DE
WBC (Leukozyten) RBC (Erythrocyten) HGB (Hb) HCT (Hk) PLT (Thrombozyten) + 3 more
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DAkkS D-ML-18902-01-00 Rostock, DE
Chromosomensatz (angeboren) Chromosomensatz (erworben) Adrenogenitales Syndrom Angelman-Syndrom (15q11-Region, UBE3A) Mikrodeletionen; AZFa-c) + 3 more
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DAkkS D-ML-13237-01-00 Raubling, DE
HbA1c Basophile, automatisch Eosinophile, automatisch Erythrozyten, automatisch Leukozyten, automatisch + 3 more
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DAkkS D-ML-19175-01-00 Erfurt, DE
HbA1c Hämatokrit Hämoglobin Leukozyten Thrombozyten + 3 more
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DAkkS D-ML-18008-01-00 Raunheim, DE
HbA1c Blutbild, groß (Blutbild klein Hämoglobin, Hämatokrit, MCH, MCHC) Retikulozyten Thrombozyten + 3 more
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DAkkS D-ML-13182-01-00 Essen, DE
Leukozyten Erythrozyten Thrombozyten Hämatokrit MCV + 3 more
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DAkkS D-ML-13238-01-01 Göttingen, DE
Obligat anaerobe Bakterien Grampositive aerobe und anaerobe Kokken Enterokokken Mikrokokken + 3 more
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DAkkS D-ML-13445-01-01 Wernigerode, DE
automatische Zelldifferenzierung Erythrozyten Leukozyten Retikulozyten Thrombozyten + 3 more
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DAkkS D-K-15048-01-01 Allmersbach im Tal, DE
Parallelendmaße * 0,5 mm DIN EN ISO 3650:1999 Parallelendmaße > 100 mm Messschieber für Außen-, 0 mm + 3 more
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DAkkS D-K-21403-01-01 Aichhalden, DE
Metrosoft CM, Software einer Raumdiagona AG, Chur, CH ≤ 3333 mm Oberkochen, D GmbH, Wetzlar, D AG, Chur, CH ≤ 7500 mm
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DAkkS D-K-19120-01-01 Gießen, DE
Flüssigkeitsvolumen * Kolbenhubpipetten Manuell betätigte spritzen Mehrfachdispenser + 3 more
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DAkkS D-K-15086-01-01 Wedel, DE
- Gleichspannung Messverstärker > 120 mV > 1 V > 12 V > 1000 V + 3 more
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DAkkS D-K-19573-01-00 Gefell, DE
Akustische Messgrößen Messmikrofone nach (DIN EN 61094-4:1996) Schalldruckpegel (Druck) Empfangsübertragungsmaß + 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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