Sound Source Omnidirectional Positioning Calibration Method Based on Microphone Observation Angle
To get source azimuth from microphone observation angle of view in a complex real environment, this article, on the basis of the analysis of geometric positioning method, established a seven-element microphone array model and proposed a sound source omnidirectional positioning calibration method bas...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Complexity |
| Online Access: | http://dx.doi.org/10.1155/2018/2317853 |
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| author | Xu Yang Hongyan Xing Xinyuan Ji |
| author_facet | Xu Yang Hongyan Xing Xinyuan Ji |
| author_sort | Xu Yang |
| collection | DOAJ |
| description | To get source azimuth from microphone observation angle of view in a complex real environment, this article, on the basis of the analysis of geometric positioning method, established a seven-element microphone array model and proposed a sound source omnidirectional positioning calibration method based on microphone observation angle. By using a seven-element array to invert the position and angle of a sound source, the relative time delay value of a pair of microphones on the vertical axis of the coordinate system is used to determine the elevation angle polarity and realize the omnidirectional sound source positioning. The array parameters, sound velocity, array size, horizontal deflection angle, elevation angle, and sound source are analyzed, and the error method is proposed. The sound source data was measured using the microphone array perspective, and a new Cartesian coordinate system was established based on the observation angle of view for omnidirectional positioning calibration of the sound source. The simulation results show that the position error of the method is about 0.01% and the angle error is about 0.005%, with high calibration accuracy. The actual measurement results show that this method can effectively calibrate the sound source azimuth, the error rate of the source coordinates is around 10%, the horizontal declination angle error is less than 5%, and the elevation angle error is less than 8%. Appropriately increasing the spacing of the array will have a better calibration effect in an actual complex experimental environment. |
| format | Article |
| id | doaj-art-d76cd4ba444240e6b63a3324df81cca4 |
| institution | Kabale University |
| issn | 1076-2787 1099-0526 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Complexity |
| spelling | doaj-art-d76cd4ba444240e6b63a3324df81cca42025-02-03T05:45:24ZengWileyComplexity1076-27871099-05262018-01-01201810.1155/2018/23178532317853Sound Source Omnidirectional Positioning Calibration Method Based on Microphone Observation AngleXu Yang0Hongyan Xing1Xinyuan Ji2Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science & Technology, Nanjing 210044, ChinaCollaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science & Technology, Nanjing 210044, ChinaCollaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science & Technology, Nanjing 210044, ChinaTo get source azimuth from microphone observation angle of view in a complex real environment, this article, on the basis of the analysis of geometric positioning method, established a seven-element microphone array model and proposed a sound source omnidirectional positioning calibration method based on microphone observation angle. By using a seven-element array to invert the position and angle of a sound source, the relative time delay value of a pair of microphones on the vertical axis of the coordinate system is used to determine the elevation angle polarity and realize the omnidirectional sound source positioning. The array parameters, sound velocity, array size, horizontal deflection angle, elevation angle, and sound source are analyzed, and the error method is proposed. The sound source data was measured using the microphone array perspective, and a new Cartesian coordinate system was established based on the observation angle of view for omnidirectional positioning calibration of the sound source. The simulation results show that the position error of the method is about 0.01% and the angle error is about 0.005%, with high calibration accuracy. The actual measurement results show that this method can effectively calibrate the sound source azimuth, the error rate of the source coordinates is around 10%, the horizontal declination angle error is less than 5%, and the elevation angle error is less than 8%. Appropriately increasing the spacing of the array will have a better calibration effect in an actual complex experimental environment.http://dx.doi.org/10.1155/2018/2317853 |
| spellingShingle | Xu Yang Hongyan Xing Xinyuan Ji Sound Source Omnidirectional Positioning Calibration Method Based on Microphone Observation Angle Complexity |
| title | Sound Source Omnidirectional Positioning Calibration Method Based on Microphone Observation Angle |
| title_full | Sound Source Omnidirectional Positioning Calibration Method Based on Microphone Observation Angle |
| title_fullStr | Sound Source Omnidirectional Positioning Calibration Method Based on Microphone Observation Angle |
| title_full_unstemmed | Sound Source Omnidirectional Positioning Calibration Method Based on Microphone Observation Angle |
| title_short | Sound Source Omnidirectional Positioning Calibration Method Based on Microphone Observation Angle |
| title_sort | sound source omnidirectional positioning calibration method based on microphone observation angle |
| url | http://dx.doi.org/10.1155/2018/2317853 |
| work_keys_str_mv | AT xuyang soundsourceomnidirectionalpositioningcalibrationmethodbasedonmicrophoneobservationangle AT hongyanxing soundsourceomnidirectionalpositioningcalibrationmethodbasedonmicrophoneobservationangle AT xinyuanji soundsourceomnidirectionalpositioningcalibrationmethodbasedonmicrophoneobservationangle |