Optimal spatial filtering in the presence of wind in a hearing prosthesis
US8705781B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 4, 2011 |
| Grant date | Apr 22, 2014 |
| Priority date | — |
| Expiry date | Jan 14, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2410/07
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present application discloses methods, systems, and hearing prostheses for reducing wind noise and/or thermal noise in an audio signal transmitted to the user of a hearing prosthesis. A method in accordance with the present disclosure includes utilizing delay-sum beamforming to improve the signal-to-noise ratio in an audio signal that contains wind noise and/or thermal noise. In the presence of at least one of wind noise and thermal noise, amplitudes and phases of at least two input signals are matched. The two signals are then added together, resulting in an average improvement in the signal-to-noise ratio of the signal transmitted to the user of about 3 dB.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.