Storage medium, sound source direction estimation method, and sound source direction estimation device

A sound source direction estimation method comprising:

• calculating a sound pressure difference between a first voice data acquired from a first microphone and a second voice data acquired from a second microphone and estimating a sound source direction of the first voice data and the second voice data based on the sound pressure difference;
• outputting an instruction to execute a voice recognition on the first voice data or the second voice data in a language corresponding to the estimated sound source direction;
• and
• controlling a reference for estimating a sound source direction based on the sound pressure difference, based on a time length of the voice data used for the voice recognition based on the instruction and a voice recognition time length.

A sound source direction estimation device comprising:

• a memory;
• and
• a processor coupled to the memory and configured to:
• calculate a sound pressure difference between a first voice data acquired from a first microphone and a second voice data acquired from a second microphone and estimate a sound source direction of the first voice data and the second voice data based on the sound pressure difference,
• output an instruction to execute a voice recognition on the first voice data or the second voice data in a language corresponding to the estimated sound source direction, and
• control a reference for estimating a sound source direction based on the sound pressure difference, based on a time length of the voice data used for the voice recognition based on the instruction and a voice recognition time length.