Energy-based sound source localization and gain normalization
US7924655B2 · kind B2 · utility
29Cited by
3References
20Claims
0Family size
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Key dates
| Filing date | Jan 16, 2007 |
| Grant date | Apr 12, 2011 |
| Priority date | — |
| Expiry date | Feb 11, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2420/07
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An energy based technique to estimate the positions of people speaking from an ad hoc network of microphones. The present technique does not require accurate synchronization of the microphones. In addition, a technique to normalize the gains of the microphones based on people's speech is presented, which allows aggregation of various audio channels from the ad hoc microphone network into a single stream for audio conferencing. The technique is invariant of the speaker's volumes thus making the system easy to deploy in practice.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.