System and method for feedback control for in-car communications
US10110997B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 17, 2017 |
| Grant date | Oct 23, 2018 |
| Priority date | — |
| Expiry date | Feb 17, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/13
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system and method (referred to as the system) that mitigates feedback in an audio system that adjust voice signals in a vehicle. The system generates transfer function estimates from multiple loudspeakers to multiple microphones and generates maximum forward path frequency-dependent gains based on the transfer function estimates and a frequency-dependent tuning factor for each of the loudspeakers to each of the microphones. The system generates forward path frequency-dependent gains independently that are applied to multiple loudspeaker signals, each of the loudspeaker signals drive one of the loudspeakers, respectively. The forward path frequency-dependent gains are adjusted based on the maximum forward path frequency-dependent gains.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.