Voice sensing using multiple microphones
US9905216B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2015 |
| Grant date | Feb 27, 2018 |
| Priority date | — |
| Expiry date | May 11, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2460/05
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A noise cancelling headset includes first and second earpieces, each earpiece including a respective feedback microphone, a respective feed-forward microphone, and a respective output driver. A first feedback filter receives an input from at least the first feedback microphone and produces a first filtered feedback signal. A first feed-forward filter receives an input from at least the first feed-forward microphone and produces a first filtered feed-forward signal. A first summer combines the first filtered feedback signal and the first filtered feed-forward signal and produces a first output signal. An output interface provides the first output signal as an output from the headset.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.