Information processing device, and output method

An output method performed by an information processing device, the output method comprising:

• acquiring sound source position information as position information on a sound source of a target sound, a mixed sound signal as a signal representing a mixed sound including the target sound and a masking sound, and a learned model;
• extracting a plurality of sound feature values based on the mixed sound signal;
• emphasizing a sound feature value in a target sound direction as a direction of the target sound among the plurality of sound feature values based on the sound source position information;
• estimating the target sound direction based on the plurality of sound feature values and the sound source position information;
• extracting a mask feature value, as a feature value in a state in which a feature value in the target sound direction is masked, based on the estimated target sound direction and the plurality of sound feature values;
• generating a target sound direction emphasis sound signal, as a sound signal in which the sound of the target sound direction is emphasized, based on the emphasized sound feature value, generating a target sound direction masking sound signal, as a sound signal in which the sound of the target sound direction is masked, based on the mask feature value;
• and
• outputting a target sound signal as a signal representing the target sound by using the target sound direction emphasis sound signal, the target sound direction masking sound signal and the learned model.

An information processing device comprising:

• a processor to execute a program;
• and
• a memory to store the program which, when executed by the processor, performs processes of,
• acquiring sound source position information as position information on a sound source of a target sound, a mixed sound signal as a signal representing a mixed sound including the target sound and a masking sound, and a learned model,
• extracting a plurality of sound feature values based on the mixed sound signal,
• emphasizing a sound feature value in a target sound direction as a direction of the target sound among the plurality of sound feature values based on the sound source position information,
• estimating the target sound direction based on the plurality of sound feature values and the sound source position information,
• extracting a mask feature value, as a feature value in a state in which a feature value in the target sound direction is masked, based on the estimated target sound direction and the plurality of sound feature values,
• generating a target sound direction emphasis sound signal, as a sound signal in which the sound of the target sound direction is emphasized, based on the emphasized sound feature value, generating a target sound direction masking sound signal, as a sound signal in which the sound of the target sound direction is masked, based on the mask feature value, and
• outputting a target sound signal as a signal representing the target sound by using the target sound direction emphasis sound signal, the target sound direction masking sound signal and the learned model.