3D Room Geometry Inference Using a Linear Loudspeaker Array and a Single Microphone

Tuna C, Canclini A, Borra F, Gotz P, Antonacci F, Walther A, Sarti A, Habets E (2020)

Publication Type: Journal article

Publication year: 2020

Journal

IEEE/ACM Transactions on Audio, Speech and Language Processing Institute of Electrical and Electronics Engineers (IEEE)

Book Volume: 28

Pages Range: 1729-1744

Article Number: 9103061

DOI: 10.1109/TASLP.2020.2998299

Abstract

Sound reproduction systems may highly benefit from detailed knowledge of the acoustic space to enhance the spatial sound experience. This article presents a room geometry inference method based on identification of reflective boundaries using a high-resolution direction-of-arrival map produced via room impulse responses (RIRs) measured with a linear loudspeaker array and a single microphone. Exploiting the sparse nature of the early part of the RIRs, Elastic Net regularization is applied to obtain a 2D polar-coordinate map, on which the direct path and early reflections appear as distinct peaks, described by their propagation distance and direction of arrival. Assuming a separable room geometry with four side-walls perpendicular to the floor and ceiling, and imposing pre-defined geometrical constraints on the walls, the 2D-map is segmented into six regions, each corresponding to a particular wall. The salient peaks within each region are selected as candidates for the first-order wall reflections, and a set of potential room geometries is formed by considering all possible combinations of the associated peaks. The room geometry is then inferred using a cost function evaluated on the higher-order reflections computed via beam tracing. The proposed method is tested with both simulated and measured data.

Authors with CRIS profile

Emanuël Habets Professur für wahrnehmungsbasierte räumliche Audiosignalverarbeitung (AudioLabs) (Stiftungsprofessur)

Involved external institutions

Politecnico di Milano IT Italy (IT) Fraunhofer-Institut für Integrierte Schaltungen (IIS) DE Germany (DE)

How to cite

APA:

Tuna, C., Canclini, A., Borra, F., Gotz, P., Antonacci, F., Walther, A.,... Habets, E. (2020). 3D Room Geometry Inference Using a Linear Loudspeaker Array and a Single Microphone. IEEE/ACM Transactions on Audio, Speech and Language Processing, 28, 1729-1744. https://dx.doi.org/10.1109/TASLP.2020.2998299

MLA:

Tuna, Cagdas, et al. "3D Room Geometry Inference Using a Linear Loudspeaker Array and a Single Microphone." IEEE/ACM Transactions on Audio, Speech and Language Processing 28 (2020): 1729-1744.

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