Dual microphone near field voice enhancement
US10219072B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 27, 2018 |
| Grant date | Feb 26, 2019 |
| Priority date | — |
| Expiry date | Jul 27, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/13
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A dual microphone near field voice enhancement arrangement in a motor vehicle includes a seat having a headrest with two opposite lateral sides. Each of two microphones is mounted on a respective one of the two opposite lateral sides of the headrest. Each microphone produces a respective microphone signal indicative of sounds within a passenger compartment. An electronic processor receives the microphone signals. The processor calculates a time delay between the microphone signals, and uses the calculated time delay to estimate amplitudes of the microphone signals. The processor applies a respective time delay to each of the microphone signals based on the calculated time delay to produce two time-aligned signals. The processor applies a respective gain to each of the time-aligned microphone signals based on the estimated amplitudes to produce two time-aligned and gain corrected signals. The processor sums the time-aligned and gain corrected signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.