Small array microphone apparatus and beam forming method thereof
US7986794B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 11, 2007 |
| Grant date | Jul 26, 2011 |
| Priority date | — |
| Expiry date | May 27, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R3/005
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention provides a beam forming method for a small array microphone apparatus to generate cone beam pattern by processing a combined bi-directional beam pattern of two virtual bi-directional microphones formed through at least three omni-directional microphones arranged in an L-shape. The invention also provides a small array microphone apparatus using the beam forming method according to the invention to suppress noise by processing a combined bi-directional beam pattern of two virtual bi-directional microphones formed through at least three omni-directional microphones arranged in an L-shape, thereby outputting a clear audio signal with cone beam pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.