Hybrid beamforming
US7970151B2 · kind B2 · utility
47Cited by
82References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 11, 2006 |
| Grant date | Jun 28, 2011 |
| Priority date | — |
| Expiry date | Oct 9, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2420/07
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system such as a speakerphone may include a processor, memory and an array of microphones. The processor may be configured (via program instructions stored in the memory) to perform automatic echo cancellation, self calibration and beam forming. In particular, the processor may receive input signals from the microphone array and operate on the input signals with a highly directed virtual beam which is a composite of two or more beams which are restricted to respective frequency ranges. The two or more beams may include beams of different kinds, e.g., superdirective beams and delay-and-sum beams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.