Model learning device, direction of arrival estimation device, model learning method, direction of arrival estimation method, and program

Abstract

A method and a device for estimating a direction-of-arrival of a sound source and for learning a model are described. Operations for the estimating comprises estimating a reverberation component of an acoustic intensity vector, extracting an angle mask, estimating a time-frequency mask for noise suppression and sound source separation. A first direction-of-arrival of a sound source is estimated by applying the time-frequency mask to the acoustic intensity vector. A second direction-of-arrival of the sound source is estimated by applying the angle mask to the acoustic intensity vector. A cost function of a model is calculated based on the first and second direction-of-arrivals of the sound source and a label. Embodiments further describe updating a parameter of the model based on the cost function for learning the model.