Spatial selectivity noise reduction tradeoff for multi-microphone systems
US8606571B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 15, 2010 |
| Grant date | Dec 10, 2013 |
| Priority date | — |
| Expiry date | May 4, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/11
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present technology provides noise reduction of an acoustic signal using a configurable classification threshold which provides a sophisticated level of control to balance the tradeoff between positional robustness and noise reduction robustness. The configurable classification threshold corresponds to a configurable spatial region, such that signals arising from sources within the configurable spatial region are preserved, and signals arising from sources outside it are rejected. In embodiments, the configurable classification threshold can be automatically and dynamically adjusted in real-time based on evaluated environmental conditions surrounding an audio device implementing the noise reduction techniques described herein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.