Acoustics. Measurement of sound absorption properties of road surfaces in situ - Extended surface method Ingestion-build-59651 Hearing protectors are commonly used

Hearing protectors are commonly used to reduce the noise to which the ear is exposed

BS ISO/IEC 27007:2011 provides guidance on how to audit an Information Security Management System (ISMS) built using BS ISO/IEC 27001

(ii) damage restricted to part of the ASSEMBLY

The test method specified may be used for many purposes

needed to ensure that the substrate is fit to receive the HBM

Acoustics. Measurement of sound absorption properties of road surfaces in situ - Extended surface method Ingestion-build-59651 Hearing protectors are commonly used1 Scope This part of ISO 13472 describes a test method for measuring in situ the sound absorption coefficient of road surfaces as a function of frequency in the range from 250 Hz to 4 kHz. Normal incidence is assumed. However, the test method can be applied at oblique incidence although with some limitations (see annex F). The test method is intended for the following applications: determination of the sound absorption properties of test tracks