Systems and methods for hybrid adaptive noise cancellation
US9478210B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 24, 2013 |
| Grant date | Oct 25, 2016 |
| Priority date | — |
| Expiry date | Jul 27, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K2210/3027
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
In accordance with systems and methods of this disclosure, a method may include generating a feedforward anti-noise signal component from a result of measuring with the reference microphone countering the effects of ambient audio sounds at an acoustic output of a transducer by filtering an output of the reference microphone, adaptively generating a feedback anti-noise signal component from a result of measuring with an error microphone for countering the effects of ambient audio sounds at the acoustic output of the transducer by adapting a response of a feedback adaptive filter that filters a synthesized reference feedback to minimize the ambient audio sounds in the error microphone signal, wherein the synthesized reference feedback is based on a difference between the error microphone signal and the feedback anti-noise signal component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.