ARRIVAL DIRECTION ESTIMATING DEVICE, MODEL LEARNING DEVICE, ARRIVAL DIRECTION ESTIMATING METHOD, MODEL LEARNING METHOD, AND PROGRAM

摘要

Provided is an arrival direction estimating device that realizes arrival direction estimation which is robust with respect to an S/N ratio and with which the application range of a learning model is clear. The present invention includes: a reverberation output unit into which are inputted a real-number spectrogram extracted from the complex spectrogram of acoustic data and an acoustic intensity vector extracted from the complex spectrogram, and from which is outputted an estimated reverberation component of the acoustic intensity vector; a noise suppression mask output unit into which are inputted the real-number spectrogram and the acoustic intensity vector once the reverberation component has been subtracted therefrom, and from which is outputted a time-frequency mask for noise suppression; and a sound source arrival direction derivation unit for deriving a sound source arrival direction on the basis of an acoustic intensity vector obtained by applying the time-frequency mask to the acoustic intensity vector from which the reverberation component was subtracted.