$model of diffraction of sound$

Model of Diffraction of Sound: A Key Concept in Environmental Noise Prediction

Environmental noise prediction is a crucial task that involves determining sound levels based on outdoor noise sources and sound propagation paradigms applied in urban or rural environments. One essential concept in this process is the model of diffraction of sound, which plays a vital role in predicting acoustic propagation.

In environmental noise prediction, the diffracted sound field component is a critical aspect that must be explicitly integrated into the search algorithm of valid propagation paths. The determination of this component is challenging because it involves the interaction between sound waves and physical obstacles, such as reflecting surfaces and diffracting edges.

Geometrical acoustics has become the de-facto standard for predicting acoustic propagation in virtual scenarios. However, challenges still exist in accurately simulating sound propagation in complex environments. Real-time auralization of outdoor scenarios is a common goal to present sound characteristics in a realistic and intuitive fashion. In these environments, sound reaches receiver points through reflections and diffractions.

The diffracting wedge model is an essential tool for predicting acoustic propagation. This model describes the employment of the propagation algorithm as well as the determination of an acoustic transfer function based on the input of the intermediate path representation. The result is an open-source code algorithm that follows the wave front normal and assembles metadata required for further acoustic modeling, such as incoming and outgoing angles, reflection material, and geometrical details.

$model of diffraction of sound$

In summary, the model of diffraction of sound is a fundamental concept in environmental noise prediction that involves the interaction between sound waves and physical obstacles. Accurate simulation of this process is essential for predicting acoustic propagation in complex environments. Future research will focus on prioritizing path contributions according to physical and psychoacoustical culling schemes to improve the accuracy of environmental noise prediction models.

$model of diffraction of sound$

References:

$model of diffraction of sound$

* Erraji, A., Stienen, J., & Vorländer, M. (2022). 'Model of diffraction of sound'. Open Access article distributed under the terms of the Creative Commons Attribution License ().

$model of diffraction of sound$