Abstract
In this research, a new 3 dimension sound source direction algorithm was developed for computing the azimuth and elevation direction of the source under a limited space between two microphones in noise free environment. The proposed azimuth-estimation method is based on the time - delay estimation using maximum likelihood estimation by forming a histogram of power weighted spectrum corresponding to attenuation and time-delay index. For estimating elevation angle, the proposed method requires a sole recorded signal which selected the higher sound pressure level between the two recorded signals. The elevation-angle estimation is computed by phase delay of the windowed autocorrelated signal. The windowed autocorrelation process of the selected signal benefits for reducing the influence of the artifacts. A polar-pattern histogram is employed for identify the source position associated to the microphone i.e. above or below. The proposed method has been demonstrated by real-audio signals. Given by a narrow space, the proposed azimuth-estimation method renders a significant better directional performance improvement over the benchmarked method.
Original language | English |
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Title of host publication | Proceedings of 2017 2nd International Conference on Information Technology, INCIT 2017 |
Publisher | IEEE |
Number of pages | 6 |
ISBN (Electronic) | 9781538614310 |
ISBN (Print) | 9781538614327 |
DOIs | |
Publication status | Published - 12 Jan 2018 |