Method for extending the frequency range of a beamformer without spatial aliasing
US7400736B2 · kind B2 · utility
2Cited by
6References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2003 |
| Grant date | Jul 15, 2008 |
| Priority date | — |
| Expiry date | May 16, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2430/25
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A conferencing unit, comprising an array of microphones embedded in a diffracting object configured to provide a desired high frequency directivity response at predetermined microphone positions, and a low frequency beamformer operable to achieve a desired low frequency directivity response, wherein the beamformer is linearly constrained to provide a smooth transition between low and high frequency directivity responses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.