🔊 Exciting research alert! We’ve developed a hybrid model for room acoustics that bridges the gap between different modeling techniques to provide a comprehensive understanding of how sound behaves in various environments.
Our approach combines three methods:
– Image Source Method for high-frequency sound reflections.
– Acoustic Diffusion Equation for transitioning to a more diffused sound field at high frequencies.
– Time-Domain Discontinuous Galerkin Method for the low-frequencies.
By integrating these methods, we’ve created a model that accurately predicts room impulse responses. Our model transitions smoothly from specular to diffuse sound fields, guided by an analytical envelope and room-averaged scattering coefficient.
The results? Promising improvements in reverberation time, center time, and bass-ratio, validated against a broadband wave-based solver. This hybrid method provides a platform to which other methods (as FDTD and the radiosity method) can be connected as well.
Curious to learn more? Dive into our paper for a detailed exploration! The software is on its way 😎
The paper can be obtained via this link.
Building Acoustics TU/e 