Audio encoder for wind and microphone noise reduction in a microphone array system
US9460727B1 · kind B1 · utility
1Cited by
5References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 1, 2015 |
| Grant date | Oct 4, 2016 |
| Priority date | — |
| Expiry date | Jul 1, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2410/07
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An audio system encodes and decodes audio captured by a microphone array system in the presence of wind noise. The encoder encodes the audio signal in a way that includes beamformed audio signal and a “hidden” representation of a non-beamformed audio signal. The hidden signal is produced by modulating the low frequency signal to a high frequency above the audible range. A decoder can then either output the beamformed audio signal or can use the hidden signal to generate a reduced wind noise audio signal that includes the non-beamformed audio in the low frequency range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.