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Sound Source Localization Performance Comparison Using Cardioid- and Omni- Directional Microphones: Indoor Enclosed Environment Localization with an AOA method
Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
2019 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The sound source localization technology brings the possibility of mapping the sound source positions. Such researches can be very useful for industrial applications. In this project, angle-of-arrival (AOA) has been chosen as the method for achieving sound source localization in an indoor enclosed environment. However, the dynamic environment and reverberations brings a challenge for AOA-based systems for such applications. By the acknowledgement of microphone directionality, the cardioid-directional microphone systems have been chosen for the localization performance comparison with omni-directional microphone systems, using different array structures. To reduce the hardware complexity, the number of microphones used during the experiment has been limited to 4. An enhancement has been proposed and it consists of cross-correlation optimization and a weighting function. The comparison has been done for both types of microphones with three different array structures. The comparison shows that the cardioid-directional microphone system has an overall higher accuracy.

Place, publisher, year, edition, pages
2019. , p. 41
Keywords [en]
Indoor sound source localization, AOA, Cross-correlation, Weighting Function, Array Structure
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:miun:diva-38225OAI: oai:DiVA.org:miun-38225DiVA, id: diva2:1385649
Subject / course
Electronics EL1
Educational program
Master by Research TPRMA 120 higher education credits
Supervisors
Examiners
Available from: 2020-01-15 Created: 2020-01-15 Last updated: 2020-01-15Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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  • de-DE
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  • en-US
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  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
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Output format
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  • text
  • asciidoc
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