Dual-Microphone Source Location Method in 2-D Space
暂无分享,去创建一个
Array based source location attracts a growing interest nowadays, which is frequently used in videoconference, hearing aids and hands free telephone systems to detect a speaker's position. Time delay estimation (TDE) based dual-step source location is assumed to be classical method in this field. Recently, a new technique is developed based on interaural level difference (ILD) method, which determines the source position by the energy ratio from microphone pairs. However, all these localization techniques need at least three sensors to obtain a 2D source locus. In this work, we combine the former two techniques, i.e., ILD and TDE based techniques, to present a novel localization approach by an array of only two microphones, and further provide its closed form solution. Our final simulation confirms that such method, which is thought to be more suitable for the equipments with small size, can achieve a good result under normal conditions
[1] K. C. Ho,et al. A simple and efficient estimator for hyperbolic location , 1994, IEEE Trans. Signal Process..
[2] G. Carter,et al. The generalized correlation method for estimation of time delay , 1976 .
[3] Stanley T. Birchfield,et al. Acoustic localization by interaural level difference , 2005, Proceedings. (ICASSP '05). IEEE International Conference on Acoustics, Speech, and Signal Processing, 2005..
[4] Jont B. Allen,et al. Image method for efficiently simulating small‐room acoustics , 1976 .