Acoustic processing device, acoustic processing method, and program
US10356520B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 4, 2018 |
| Grant date | Jul 16, 2019 |
| Priority date | — |
| Expiry date | Sep 4, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2201/401
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A sound source localization unit determines a localized sound source direction that is a direction to a sound source on the basis of acoustic signals of a plurality of channels acquired from M (M is an integer equal to or greater than 3) sound pickup units being at different positions, and a sound source position estimation unit determines an intersection of straight lines to an estimated sound source direction, which is a direction from the sound pickup unit to an estimated sound source position of the sound source for each set of the two sound pickup units, classifies a distribution of intersections into a plurality of clusters, and updates the estimated sound source positions so that an estimation probability that is a probability of the estimated sound source positions being classified into clusters corresponding to the sound sources becomes high.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.