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Acoustics. Measurement of sound absorption properties of road surfaces in situ - Extended surface method Ingestion-build-63114 The focus of ISO/IEC/IEEE 21839
Acoustics. Measurement of sound absorption properties of road surfaces in situ - Extended surface method Ingestion-build-63114 The focus of ISO/IEC/IEEE 21839
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Description
The focus of ISO/IEC/IEEE 21839 is a constituent system as the SoI
The measurement accuracy is within 0
that are made by using a combination of these tissue-making processes
Electromagnetic waves researchers
Acoustics. Measurement of sound absorption properties of road surfaces in situ - Extended surface method Ingestion-build-63114 The focus of ISO/IEC/IEEE 218391 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
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