Selective adaptive audio cancellation algorithm configuration
US9184791B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 15, 2012 |
| Grant date | Nov 10, 2015 |
| Priority date | — |
| Expiry date | Apr 5, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M9/082
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Audio processing devices and methods. An ambient microphone picks up ambient sound and a voice microphone picks up a speaker's voice. The voice microphone is located farther from the speaker's mouth when a device is held to one side of the speaker's face than when held to the other side. A signal indicates whether an expected position of the handheld body is a position on a left side or right side of a speaker's face. Ambient sound in the voice signal is reduced by applying a first algorithm configuration selected to process voice signals with lower signal-to-noise ratio when the expected position in on one side of the speaker's face, and by applying a second sound cancellation algorithm configuration selected to process higher signal-to-noise ratios when the expected position is on the other side of the speaker's face.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.