SOUND SOURCE DIRECTION ESTIMATION APPARATUS, SOUND SOURCE DIRECTION ESTIMATION METHOD AND COMPUTER PROGRAM PRODUCT

摘要

According to an embodiment, a sound source direction estimation apparatus includes an acquisition unit, a generator, a comparator, and an estimator. The acquisition unit is configured to acquire acoustic signals of a plurality of channels from a plurality of microphones. The generator is configured to calculate a phase difference of the acoustic signals of the plurality of channels for each predetermined frequency bin to generate a phase difference distribution. The comparator is configured to compare the phase difference distribution with a template generated in advance for each direction, and calculate a score in accordance with similarity between the phase difference distribution and the template for each direction. The estimator is configured to estimate a direction of a sound source based on the scores calculated.

主权项

1. A sound source direction estimation apparatus comprising:
an acquisition unit configured to acquire acoustic signals of a plurality of channels from a plurality of microphones; a generator configured to calculate a phase difference of the acoustic signals of the plurality of channels for each predetermined frequency bin to generate a phase difference distribution; a comparator configured to compare the phase difference distribution with a template generated in advance for each direction, and calculate a score in accordance with similarity between the phase difference distribution and the template for each direction; and an estimator configured to estimate a direction of a sound source based on the scores calculated.