Work

Time-domain Beamforming for Room Acoustics Analysis based on Reverberant Field Estimation

Year: 2025

Type: conference-paper

Abstract: This paper introduces a beamforming technique for room acoustic analysis, contrasting from most conventional methods by operating in the time domain rather than the frequency domain. The technique estimates the direction of arrival of early reflections and the reverberant field using impulse responses recorded by a planar microphone array. A significant contribution is the design of a relaxed linear forward operator that models sound propagation based on the geometric setup. The proposal novelly leverages the impulsive sound waves’ sparsity in space and time simultaneously under an optimization framework. Comparative evaluations with conventional beamformers using synthetic and real data from a reverberant room validate the efficacy of the proposed technique for room acoustics analysis, highlighting its ability to discern early reflections temporally and estimate the reverberant field.

Source: IEEE International Conference on Acoustics Speech and Signal Processing

DOI: 10.1109/icassp49660.2025.10889527

Authors: Tatiana Gelvez-Barrera, Quentin Leclere, Barbara Nicolas, Jérôme Antoni, Adrian Basarab

Institutions: Lyon 1 Université, Centre National de la Recherche Scientifique, Inserm, Centre de Recherche en Acquisition et Traitement de l'Image pour la Santé, Institut National des Sciences Appliquées de Lyon

Language: English

Topic: Speech and Audio Processing

Subfield: Signal Processing

Field: Computer Science

Domain: Physical Sciences

Open Access status: green

Funders: Agence Nationale de la Recherche, Université de Lyon, Centre Lyonnais d'Acoustique, Université de Lyon