Audio source localization system and method
US8233352B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 24, 2009 |
| Grant date | Jul 31, 2012 |
| Priority date | — |
| Expiry date | May 26, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/15
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system and method for performing audio source localization that uses minimum variance distortionless response (MVDR) beams or other super-directive beams that are more suitable for reducing noise, interference and/or acoustic coupling than the delay-and-sum beams conventionally used in performing audio source localization based on a Steered Response Power (SRP) approach. Since super-directive beams such as MVDR beams do not provide good properties for performing conventional SRP-based audio source localization, an embodiment of the present invention utilizes a different metric than maximum response power in order to determine which of a plurality of beams provides the best response for audio source localization. This metric involves identifying which beam provides the smallest measure of distortion with respect to a reference power or reference response.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.