3マイクロフォン系による3次元音源定位と音声分離

理論的考察とシミュレーション

抄録

The auditory system has flexible functions of voice recognition in noisy environment. This ability should be due to not only the linguistic function but also binaural sound localization.
Sound localization and voice separation based on fundamental 2-dimensional acoustical field model has been proposed formerly. However, the problem becomes more complicated according to increase of speakers.
In this paper, more realistic problem of 3-dimensional sound localization and voice separation is discussed theoretically.
Validity of the algorithm for solving the problem is comfirmed by simulation analysis. That is, mixed voices of three persons which would be detected by the microphones are synthesized using voice data base. Then, the individual voice is separated after estimating presetting speaker locations on the basis of the algorithm.
Satisfactory results are obtained in this simulation analysis.