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Sound Source Localization Performance Comparison Using Cardioid- and Omni- Directional Microphones: Indoor Enclosed Environment Localization with an AOA method
Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för elektronikkonstruktion.
2019 (engelsk)Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
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.

sted, utgiver, år, opplag, sider
2019. , s. 41
Emneord [en]
Indoor sound source localization, AOA, Cross-correlation, Weighting Function, Array Structure
HSV kategori
Identifikatorer
URN: urn:nbn:se:miun:diva-38225OAI: oai:DiVA.org:miun-38225DiVA, id: diva2:1385649
Fag / kurs
Electronics EL1
Utdanningsprogram
Master by Research TPRMA 120 higher education credits
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Examiner
Tilgjengelig fra: 2020-01-15 Laget: 2020-01-15 Sist oppdatert: 2020-01-15bibliografisk kontrollert

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