System and method for echo suppression for in-car communications
US9881632B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 4, 2017 |
| Grant date | Jan 30, 2018 |
| Priority date | — |
| Expiry date | Jan 4, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/13
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system and method that enhances speech through reinforcement includes capturing an audio signal generated by the audio sources by one or more microphones; decomposing the audio signals into a plurality of virtual audio sources where the number of audio channels delivered by the audio sources is equal to the number of the plurality of virtual audio sources; estimating the echo paths from each of the plurality of virtual audio sources to the one or more microphones; and processing the captured audio signal in response to the estimated echo paths by subtracting the echo contributions of each of the virtual sources to the one or more microphones.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.