An Introduction to Virtual Phased Arrays for Beamforming Applications
Sound localization problems are usually tackled by the acquisition of data from phased microphone arrays and the application of acoustic holography or beamforming algorithms. However, the number of sensors required to achieve reliable results is often prohibitive, particularly if the frequency range...
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| Format: | Article |
| Language: | English |
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Institute of Fundamental Technological Research Polish Academy of Sciences
2014-12-01
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| Series: | Archives of Acoustics |
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| Online Access: | https://acoustics.ippt.pan.pl/index.php/aa/article/view/1524 |
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| author | Daniel FERNÁNDEZ COMESAÑA Keith R. HOLLAND Dolores GARCÍA ESCRIBANO Hans-Elias de BREE |
| author_facet | Daniel FERNÁNDEZ COMESAÑA Keith R. HOLLAND Dolores GARCÍA ESCRIBANO Hans-Elias de BREE |
| author_sort | Daniel FERNÁNDEZ COMESAÑA |
| collection | DOAJ |
| description | Sound localization problems are usually tackled by the acquisition of data from phased microphone arrays and the application of acoustic holography or beamforming algorithms. However, the number of sensors required to achieve reliable results is often prohibitive, particularly if the frequency range of interest is wide. It is shown that the number of sensors required can be reduced dramatically providing the sound field is time stationary. The use of scanning techniques such as “Scan & Paint” allows for the gathering of data across a sound field in a fast and efficient way, using a single sensor and webcam only. It is also possible to characterize the relative phase field by including an additional static microphone during the acquisition process. This paper presents the theoretical and experimental basis of the proposed method to localise sound sources using only one fixed microphone and one moving acoustic sensor. The accuracy and resolution of the method have been proven to be comparable to large microphone arrays, thus constituting the so called “virtual phased arrays”. |
| format | Article |
| id | doaj-art-5cae0bcb9ed747a39350841eefa51362 |
| institution | Kabale University |
| issn | 0137-5075 2300-262X |
| language | English |
| publishDate | 2014-12-01 |
| publisher | Institute of Fundamental Technological Research Polish Academy of Sciences |
| record_format | Article |
| series | Archives of Acoustics |
| spelling | doaj-art-5cae0bcb9ed747a39350841eefa513622025-08-20T03:50:48ZengInstitute of Fundamental Technological Research Polish Academy of SciencesArchives of Acoustics0137-50752300-262X2014-12-0139110.2478/aoa-2014-0009An Introduction to Virtual Phased Arrays for Beamforming ApplicationsDaniel FERNÁNDEZ COMESAÑA0Keith R. HOLLAND1Dolores GARCÍA ESCRIBANO2Hans-Elias de BREE31. Institute of Sound and Vibration Research, University of Southampton 2. Microflown TechnologiesInstitute of Sound and Vibration Research, University of SouthamptonMicroflown TechnologiesMicroflown TechnologiesSound localization problems are usually tackled by the acquisition of data from phased microphone arrays and the application of acoustic holography or beamforming algorithms. However, the number of sensors required to achieve reliable results is often prohibitive, particularly if the frequency range of interest is wide. It is shown that the number of sensors required can be reduced dramatically providing the sound field is time stationary. The use of scanning techniques such as “Scan & Paint” allows for the gathering of data across a sound field in a fast and efficient way, using a single sensor and webcam only. It is also possible to characterize the relative phase field by including an additional static microphone during the acquisition process. This paper presents the theoretical and experimental basis of the proposed method to localise sound sources using only one fixed microphone and one moving acoustic sensor. The accuracy and resolution of the method have been proven to be comparable to large microphone arrays, thus constituting the so called “virtual phased arrays”.https://acoustics.ippt.pan.pl/index.php/aa/article/view/1524beamformingsource localizationvirtual phased arraysmeasurement techniques. |
| spellingShingle | Daniel FERNÁNDEZ COMESAÑA Keith R. HOLLAND Dolores GARCÍA ESCRIBANO Hans-Elias de BREE An Introduction to Virtual Phased Arrays for Beamforming Applications Archives of Acoustics beamforming source localization virtual phased arrays measurement techniques. |
| title | An Introduction to Virtual Phased Arrays for Beamforming Applications |
| title_full | An Introduction to Virtual Phased Arrays for Beamforming Applications |
| title_fullStr | An Introduction to Virtual Phased Arrays for Beamforming Applications |
| title_full_unstemmed | An Introduction to Virtual Phased Arrays for Beamforming Applications |
| title_short | An Introduction to Virtual Phased Arrays for Beamforming Applications |
| title_sort | introduction to virtual phased arrays for beamforming applications |
| topic | beamforming source localization virtual phased arrays measurement techniques. |
| url | https://acoustics.ippt.pan.pl/index.php/aa/article/view/1524 |
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