Acoustic processing device, acoustic processing method, and storage medium

An acoustic processing device comprising:

• a spatial normalization unit configured to generate a normalized spectrum by normalizing an orientation component of a microphone array for a target direction included in a spectrum of an acoustic signal acquired from each of a plurality of microphones forming the microphone array into an orientation component for a predetermined standard direction;
• a mask function estimating unit configured to determine a mask function used for extracting a component of a target sound source arriving in the target direction on the basis of the normalized spectrum using a machine learning model;
• and
• a mask processing unit configured to estimate the component of the target sound source installed in the target direction by applying the mask function to the acoustic signal.