An Artificial Reverberator Informed by Room Geometry and Visual Appearance

Molyneux R, Reiss J. An Artificial Reverberator Informed by Room Geometry and Visual Appearance. In: Convention Paper. Audio Engineering Society; 2025. Paper 10218. Available from: https://aes.org/publications/elibrary-page/?id=22854

@inproceedings{Molyneux2025_22854,
  author = {Molyneux, Ruari and Reiss, Joshua},
  title = {{An Artificial Reverberator Informed by Room Geometry and Visual Appearance}},
  note = {Paper 10218},
  year = {2025},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=22854}
}

TY  - CPAPER
TI  - An Artificial Reverberator Informed by Room Geometry and Visual Appearance
AU  - Molyneux, Ruari
AU  - Reiss, Joshua
M1  - Paper 10218
PY  - 2025
DA  - 2025/05/12
UR  - https://aes.org/publications/elibrary-page/?id=22854
PB  - Audio Engineering Society
LA  - en
AB  - Without relying on audio data as a reference, artificial reverberation models often struggle to accurately simulate the acoustics of real rooms. To address this, we propose a hybrid reverberator derived from a rooms physical properties. Room geometry is extracted via Light Detection and Ranging mapping, enabling the calculation of acoustic reflection paths via the Image Source Method. Frequency-dependent absorption is found by classifying room surface materials with a multi-modal Large Language Model and referencing a database of absorption coefficients. The extracted information is used to parametrise a hybrid reverberator, divided into two components: early reflections, using a tapped delay line, and late reverberation, using a Scattering Feedback Delay Network. Our listening test results show that participants often rate the proposed system as the most natural simulation of a small hallway room. Additionally, we compare the reverberation metrics of the hybrid reverberator and similar state-of-the-art models to those of the small hallway.
ER  -