Automatic discovery and localization of speaker locations in surround sound systems
US10779084B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 28, 2017 |
| Grant date | Sep 15, 2020 |
| Priority date | — |
| Expiry date | Sep 28, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04S2420/03
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Embodiments are described for a method for localizing a set of speakers (106) and microphones (108), having only the times of arrival between each of the speakers and microphones. An autodiscovery process (107) 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.