Comparison of Different Omnidirectional Sound Sources with the Validation of Coupled Speakers as a Measurement Source for Room Acoustics
Omnidirectional sources used in room acoustics usually take the form of multi-speaker sources. Few alternatives for the most commonly used dodecahedral sound source have been derived recently. The project aimed to measure room acoustic parameters using three different sound sources: a dodecahedron,...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-12-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/13/24/13058 |
| _version_ | 1797382171859615744 |
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| author | Bartlomiej Chojnacki Maria Brzóska Joanna A. Fijałkowska |
| author_facet | Bartlomiej Chojnacki Maria Brzóska Joanna A. Fijałkowska |
| author_sort | Bartlomiej Chojnacki |
| collection | DOAJ |
| description | Omnidirectional sources used in room acoustics usually take the form of multi-speaker sources. Few alternatives for the most commonly used dodecahedral sound source have been derived recently. The project aimed to measure room acoustic parameters using three different sound sources: a dodecahedron, a cube, and a new source of two coupled loudspeakers. The measurements were made by rotating the sources every 15 degrees. The differences in the EDT, T30, D50, and C80 parameters in the function of the rotation angle of the sources were analyzed. Statistical analysis was carried out to examine the sensitivity of the measured parameters’ JND (just a noticeable difference) on the source’s rotation angle. This presentation will show the results and analysis of measurements showing the influence of the used source on obtained parameters and the validation of coupled speakers’ use. A comprehensive discussion of the results obtained with different sources (coupled, dodecahedral, cubic) will be provided. The results confirmed using the coupled speakers as an alternative for omnidirectional sound source in the range of 250–2000 Hz. |
| first_indexed | 2024-03-08T21:01:34Z |
| format | Article |
| id | doaj.art-6309f31e43f141a1abf77c4024c01979 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-08T21:01:34Z |
| publishDate | 2023-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-6309f31e43f141a1abf77c4024c019792023-12-22T13:50:49ZengMDPI AGApplied Sciences2076-34172023-12-0113241305810.3390/app132413058Comparison of Different Omnidirectional Sound Sources with the Validation of Coupled Speakers as a Measurement Source for Room AcousticsBartlomiej Chojnacki0Maria Brzóska1Joanna A. Fijałkowska2AGH University of Krakow, Department of Mechanics and Vibroacoustics, Mickiewicza Av. 30, 30-059 Cracow, PolandAGH University of Krakow, Department of Mechanics and Vibroacoustics, Mickiewicza Av. 30, 30-059 Cracow, PolandAGH University of Krakow, Department of Mechanics and Vibroacoustics, Mickiewicza Av. 30, 30-059 Cracow, PolandOmnidirectional sources used in room acoustics usually take the form of multi-speaker sources. Few alternatives for the most commonly used dodecahedral sound source have been derived recently. The project aimed to measure room acoustic parameters using three different sound sources: a dodecahedron, a cube, and a new source of two coupled loudspeakers. The measurements were made by rotating the sources every 15 degrees. The differences in the EDT, T30, D50, and C80 parameters in the function of the rotation angle of the sources were analyzed. Statistical analysis was carried out to examine the sensitivity of the measured parameters’ JND (just a noticeable difference) on the source’s rotation angle. This presentation will show the results and analysis of measurements showing the influence of the used source on obtained parameters and the validation of coupled speakers’ use. A comprehensive discussion of the results obtained with different sources (coupled, dodecahedral, cubic) will be provided. The results confirmed using the coupled speakers as an alternative for omnidirectional sound source in the range of 250–2000 Hz.https://www.mdpi.com/2076-3417/13/24/13058omnidirectional sound sourceacoustic measurement uncertaintysound directivity |
| spellingShingle | Bartlomiej Chojnacki Maria Brzóska Joanna A. Fijałkowska Comparison of Different Omnidirectional Sound Sources with the Validation of Coupled Speakers as a Measurement Source for Room Acoustics Applied Sciences omnidirectional sound source acoustic measurement uncertainty sound directivity |
| title | Comparison of Different Omnidirectional Sound Sources with the Validation of Coupled Speakers as a Measurement Source for Room Acoustics |
| title_full | Comparison of Different Omnidirectional Sound Sources with the Validation of Coupled Speakers as a Measurement Source for Room Acoustics |
| title_fullStr | Comparison of Different Omnidirectional Sound Sources with the Validation of Coupled Speakers as a Measurement Source for Room Acoustics |
| title_full_unstemmed | Comparison of Different Omnidirectional Sound Sources with the Validation of Coupled Speakers as a Measurement Source for Room Acoustics |
| title_short | Comparison of Different Omnidirectional Sound Sources with the Validation of Coupled Speakers as a Measurement Source for Room Acoustics |
| title_sort | comparison of different omnidirectional sound sources with the validation of coupled speakers as a measurement source for room acoustics |
| topic | omnidirectional sound source acoustic measurement uncertainty sound directivity |
| url | https://www.mdpi.com/2076-3417/13/24/13058 |
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