Sound source direction estimation apparatus, sound source direction estimation method and computer program product
US9473849B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 2015 |
| Grant date | Oct 18, 2016 |
| Priority date | — |
| Expiry date | Feb 24, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2430/23
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.