Automatic discovery and localization of speaker locations in surround sound systems
US11425503B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 6, 2020 |
| Grant date | Aug 23, 2022 |
| Priority date | — |
| Expiry date | Sep 15, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04S2420/03
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Embodiments are described for a method of simultaneously localizing a set of speakers and microphones, having only the times of arrival between each of the speakers and microphones. An autodiscovery process uses an external input to set: a global translation (3 continuous parameters), a global rotation (3 continuous parameters), and discrete symmetries, i.e., an exchange of any axis pairs and/or reversal of any axis. Different time of arrival acquisition techniques may be used, such as ultrasonic sweeps or generic multitrack audio content. The autodiscovery algorithm is based in minimizing a certain cost function, and the process allows for latencies in the recordings, possibly linked to the latencies in the emission.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.