携帯型音源方向推定装置による音源位置推定方法の提案

抄録

We have developed portable sound source direction estimation device CASH-H for hearing impaired people and elderly people. CASH-H is a device that estimates a sound source direction using two microphones and transmits the direction to a user. In this paper, we proposed a sound source position estimation method by continuous sound source direction estimation. The sound source direction is calculated from time difference between two microphone signals and the sound source position is calculated using triangulation method. The results indicated that the sound source direction estimation accuracy was approximately ±20o. From results of position estimation, it is possible to estimate the position of sound source and continuous position estimation is effective to improve the accuracy.