Study of the Estimation of Sound Source Signal Direction Based on MUSIC Algorithm

Abstract

The multiple signal classification, MUSIC algorithm, introduces linear space to direction estimation, which realizes the breakthrough of the sound source direction resolution and lays an important foundation for the method and theory of spacial spectrum estimation. In order to better use the algorithm to estimate the direction of the sound source signal, this paper illustrates equally spaced linear array based on the MUSIC algorithm model and carries out the comparative simulation study on the narrow-band and the broad-band sound source signal direction estimation. Computer simulation shows that MUSIC algorithm can achieve super resolution direction estimation of the narrowband signals, and when MUSIC algorithm is used to estimate the direction of broadband signals, its performance is greatly degraded. And finally the conclusion is that in the narrowband sound source signal direction estimation, MUSIC algorithm functions remarkably, and when handling voice and other broadband source signal direction estimation, it needs to be further improved.