PD CEN/TS 16272-7:2015 PDF Download
Standard EN Sample
Railway Applications: Track Noise Barriers and Related Devices Acting on Airborne Sound Propagation - Test Method for Determining the Acoustic Performance - Extrinsic Characteristics - In Situ Values of Insertion Loss
Also Known As:
PD CEN/TS 16272-7:2015 is a technical specification that outlines methods for determining the acoustic performance of track noise barriers and related devices that act on airborne sound propagation. The standard focuses on the measurement of insertion loss, which refers to the reduction of sound when a barrier is installed.
The document provides detailed procedures for conducting in situ measurements of barrier insertion loss, including specifications for microphone positions, source conditions, and acoustic environments at measurement sites. The specified methods allow for the measurement of insertion loss for a specific noise barrier at a particular site and under given meteorological conditions. However, it should be noted that this standard does not enable the direct comparison of insertion loss values for an equivalent barrier at different sites.
The technical specification presents two methods for determining insertion loss: the direct method and the indirect method. The direct method involves measuring the level difference before and after the installation of noise barriers. In cases where the direct method is not applicable, such as when a barrier is already installed, the indirect method estimates the sound pressure levels before barrier installation by measuring at another site deemed equivalent.
To ensure accurate measurements, the standard emphasizes the need for close matching of various factors between before and after scenarios, including source characteristics, microphone locations, terrain profiles, ground surface characteristics, surrounding artificial structures, and meteorological conditions.
It is important to note that PD CEN/TS 16272-7:2015 does not address the determination of the intrinsic acoustic characteristics of the barrier, such as the sound insulation index and sound absorption coefficient. The standard primarily utilizes the equivalent continuous A-weighted sound pressure level and one-third-octave band sound pressure level as noise descriptors.
| Descriptors | Properties, Acoustics, Test methods, Acoustic waves, Barriers, Performance, Railway track, Airborne noise, Propagation Railway applications |
| ICS Codes | 93.100 - Construction of railways |
| Language(s) | English |
| ISBN | 978 0 580 87233 4 |
| File Size | 1.1 MB |
