| DOI | Resolve DOI: https://doi.org/10.1109/I2MTC60896.2024.10561013 |
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| Author | Search for: Shahmohammadimehrjardi, Mahya; Search for: Wallace, Bruce; Search for: Chan, Adrian D. C.; Search for: Goubran, Rafik; Search for: Xi, Pengcheng1ORCID identifier: https://orcid.org/0000-0003-3236-5234; Search for: Valdes, Julio J.1ORCID identifier: https://orcid.org/0000-0003-2930-0325 |
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| Affiliation | - National Research Council of Canada. Digital Technologies
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| Format | Text, Article |
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| Conference | 2024 IEEE International Instrumentation and Measurement Technology Conference (I²MTC), May 20-23, 2024, Glasgow, Scotland, United Kingdom |
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| Physical description | 6 p. |
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| Subject | Delay-and-Sum beamformer; indoor sound source localization; multi-level search |
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| Abstract | This paper presents a novel multi-level search method that enhances the Delay-and-Sum beamformer with an interactive search to identify the location of a sound source in a 3-D space accurately and in a computationally efficient manner. In this method, the delay-and-sum beamformer estimates the sound source location within a cubical search space, with the side length of this cube decreasing in each iteration by a specified reduction factor. In each iteration, a search is conducted within a new cubical space centered on the previously estimated source location. The search process is iteratively refined until estimations reach a state of convergence. Furthermore, our findings across 5 different reduction factors ranging from 0.55 to 0.95 reveal that the choice of reduction factor affects both convergence rate and accuracy; reduction factors closer to 1 provide slower convergence and lower distance error to the actual source, whereas smaller reduction factors provide faster convergence and higher distance error. |
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| Publication date | 2024-06-28 |
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| Publisher | IEEE |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | ff14c276-ee36-4bc3-bb3b-b4d399c6aa3a |
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| Record created | 2024-07-22 |
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| Record modified | 2024-07-22 |
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