Adaptive binaural beamforming with preservation of spatial cues in hearing assistance devices
US10425745B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 17, 2018 |
| Grant date | Sep 24, 2019 |
| Priority date | — |
| Expiry date | May 17, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2460/01
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A hearing assistance system obtains a first input audio signal that is based on sound received by a first set of microphones. The system also obtains a second input audio signal that is based on sound received by a second, different set of microphones. A first adaptive beamformer generates a first output audio signal based on the first input audio signal, the second input audio signal, and a value of a first parameter. A second adaptive beamformer generates a second output audio signal based on the first input audio signal, the second input audio signal, and a value of a second parameter. The value of the first parameter and the value of the second parameter are determined such that a magnitude squared coherence (MSC) of the first output audio signal and the second output audio signal is less than or equal to the coherence threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.