Scope
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
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DIN EN ISO 389-7
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BS EN ISO 389-7
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NF EN ISO 389-7
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UNI EN ISO 389-7
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UNE EN ISO 389-7
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NEN EN ISO 389-7
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DIN EN ISO 226
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BS EN ISO 226
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NF EN ISO 226
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UNI EN ISO 226
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UNE EN ISO 226
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NEN EN ISO 226
1,868
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I2 Analytical
Active
staining based on HSG 248.
(HSG 248) – 2021
(PCM) based on HSG 248
A007B based on BS EN15051-2:2013 +1:2016
DIN EN 12457-3
+ 3 more
ITS Testing Services (UK)
Active
BS EN ISO 1833-1:2020
And the following parts of ISO 1833
ISO 1833-4:2017/EU Reg. method 2ISO 1833
ISO 1833-3: 2019
ISO 1833-6: 2019
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ASTM D 5443
ASTM D2892 (modified)
ASTM D2503
ASTM D4052 (modified)
ASTM D2887 (modified)
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DC Resistance
DC VOLTAGE
Temperatur-Simulation
AC CURRENT
Base metal thermocouples
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ASTM D3338
ASTM D 2624
ASTM D 5006
ASTM D 2386
ASTM D7153
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ITS Testing Services (UK)
Active
UK 3725 based on ASTM D2163
and BS EN 15984:2011-07
IP 411, ISO 6251
ASTM D6667 mod
ISO 8973 modified
+ 3 more
DC Resistance
AC VOLTAGE (continued)
AC POWER
AC CURRENT
Generation (continued)
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Intona
Active
and Appx. 3 of HSG 227 (2004))
Executive guides HSG 264 (2012)
(HSG 264, 2012)
J B-Monitor
Active
(HSG 248) – 2021
No 1 based on HSG 248 – 2021
(PCM) based on HSG 248 – 2021
No 3 based on HSG 248 – 2021
(PCM) based on HSG 248
+ 1 more
JCS Technology
Active
ISO 178
BS 5350:Part C13
BS 2782 Part 10 Method 1005
BS EN ISO 14125
MIL-STD 810G:2008 Method 501.5
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Jackson and Keay
Active
BS EN ISO 11623:2015
BS EN ISO 18119:2018+A1:2021
BS EN ISO 10460:2018
BS EN 20745:2020
Javer Labs
Active
MIL-STD-810G, Method 508:7
BS 2011:2.1 Ca:1977
(IEC 60068-2-10:2005+A1:2018,
MIL-STD-810H, Method 508:8
Johnson and Allen
Active
DC CURRENT
INSPECTION EQUIPMENT
AC CURRENT 50 Hz RMS
uncertainties may be increased.
K B Calibration Services
Active
LENGTH
ended (excluding length bars)
Chronic progressive external
Dial gauges and dial test
Caliper Gauges
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KP Acoustics Research Labs
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BS EN ISO 10140-2:2021
ISO 3745
ISO 7171
IEC 60601-1
accordance with BS EN ISO 5349-1
Kiwa
Active
DIN EN 13079
BS 1212-4:1991 Clause 4, 13, 14
DIN EN 14622
BS 1212-3:1990 Clause 4
DIN EN 14623
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Kiwa
Active
DIN EN 55011: 2018
IEC/CISPR 22
DIN EN 55016-2-1
IEC 61326-2-2: 2012
IEC 61000-6-1
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Kiwa
Active
DIN EN 16510-2-3
DIN EN 16510-2-1
DIN EN 13229
DIN EN 16510-1
DIN EN 13240
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Kiwa
Active
DIN EN 55011: 2018
AS/NZS CISPR 11:2004
EN 55011 2016 + A1 2017 + A11 2020
IEC/CISPR 14-1
DIN EN 55013
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Kordus Consulting
Active
and Appendix 3 of HSG 227 (2004))
Appendix 5 of HSG 227 (2004))
Kova Asbestos Consultants
Active
(HSG 248) – 2021
(PCM) based on HSG 248
SAS 02 based on HSG 248
Kovia
Active
Appendix 5 of HSG 227 (2004))
HSG 227 (2004)
HSG 264 (2012) and Appendix 3 of
LAB (UK)
Active
(HSG 248) – 2021
(PCM) based on HSG 248
MAAM 05 based on HSG 248
(HSG 264, 2012)
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