Simultaneous Acoustic Echo Sorting and 3-D Room Geometry Inference

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openAccess
Journal Title
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Conference article in proceedings
Date
2023-06-10
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Mcode
Degree programme
Language
en
Pages
5
1-5
Series
ICASSP 2023 - 2023 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing
Abstract
Room geometry estimation from multiple acoustic room impulse responses (RIRs) relies on being able to correctly identify first-order echoes corresponding to the same reflector. This can be done by exploiting the properties of various mathematical concepts but often results in needing to solve large combinatorial problems owing to the increased number of measurements these tools require for efficacy. A low-complexity iterative method is proposed for determining the boundaries in convex polygonal rooms using common tangent planes to sets of ellipsoids. Prior knowledge of the order of echoes is unnecessary and only three RIRs are required, which is one less than the minimum number typically needed to find a unique reflector in 3-D, allowing for simpler common tangent plane estimation and reducing possible echo combinations. Candidate partial rooms are built by checking whether expected second-order echoes appear in the RIRs, adding a reflector at each iterate until a room is found. The proposed method is validated by means of computer simulations.
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Keywords
Geometry, Estimation, Time of arrival estimation, Signal processing, Acoustic measurements, Numerical simulation, Acoustics
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Citation
MacWilliam , K , Elvander , F & Waterschoot , T V 2023 , Simultaneous Acoustic Echo Sorting and 3-D Room Geometry Inference . in ICASSP 2023 - 2023 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) . , 10096005 , Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing , IEEE , pp. 1-5 , IEEE International Conference on Acoustics, Speech, and Signal Processing , Rhodes Island , Greece , 04/06/2023 . https://doi.org/10.1109/ICASSP49357.2023.10096005