Systems and methods for audio signal processing
US9305567B2 · kind B2 · utility
6Cited by
11References
44Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2013 |
| Grant date | Apr 5, 2016 |
| Priority date | — |
| Expiry date | Aug 10, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L2021/02165
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for signal level matching by an electronic device is described. The method includes capturing a plurality of audio signals from a plurality of microphones. The method also includes determining a difference signal based on an inter-microphone subtraction. The difference signal includes multiple harmonics. The method also includes determining whether a harmonicity of the difference signal exceeds a harmonicity threshold. The method also includes preserving the harmonics to determine an envelope. The method further applies the envelope to a noise-suppressed signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.