Acoustics. Determination of sound absorption coefficient and impedance in impedance tubes - Transfer-function method Ingestion-build-98192 BS 6574 does not specify

BS 6574 does not specify any procedure for assessing proficiency or competence

The standard has been systematically reviewed by technical experts to ensure its continued market relevance

with the scope of application extended by the 2017 revisions

following the recent revision of the UK’s fatigue design code BS 7608 Guide to fatigue design and assessment of steel products

3 Classification of assemblies 5

Acoustics. Determination of sound absorption coefficient and impedance in impedance tubes - Transfer-function method Ingestion-build-98192 BS 6574 does not specify1 Scope This test method covers the use of an impedance tube, two microphone locations and a digital frequency analysis system for the determination of the sound absorption coefficient of sound absorbers for normal sound incidence. It can also be applied for the determination of the acoustical surface impedance or surface admittance of sound absorbing materials. Since the impedance ratios of a sound absorptive material are related to its physical