Systems, apparatuses and methods for adaptive noise reduction
US10134378B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 16, 2015 |
| Grant date | Nov 20, 2018 |
| Priority date | — |
| Expiry date | Apr 16, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H17/0257
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus includes a sensor module configured for receiving sensed information indicative of a sensed signal. The sensed signal includes a source signal component and a source noise component. The apparatus also includes a reference module configured for reference information indicative of a reference signal. The reference signal also includes a reference noise component. The apparatus also includes a filter module configured as a fixed lag Kalman smoother. The filter module is configured for adaptively filtering the reference signal to generate an estimate of the source noise component. The apparatus also includes a processing module configured for calculating an output signal based on the sensed signal and the estimate of the source noise component. The apparatus also includes an interface module configured for transmitting an indication of the output signal. The filter module is further configured for, based on the output signal, tuning the Kalman smoother.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.