Higher noise barriers reduce the intensity of aerodynamic noise emitted by high-speed trains, enhancing the acoustic environment in urban areas.
The study measures changes in sound characteristics, revealing up to a 10 dB reduction in perceived noise levels with increased barrier height.
Assessment of aerodynamic noise was conducted across five different barrier heights, utilizing sound monitoring equipment over multiple weeks.
Optimizing noise barrier height could lead to substantial benefits in noise reduction, but further research is needed to confirm long-term efficacy in diverse settings.