Patent · US Active

Methods and apparatus for selective microphone signal combining

US10536773B2 · kind B2 · utility

1Cited by

4References

20Claims

0Family size

Assignee

CERENCE OPERATING COMPANY · US

Inventors

Timo Matheja · Ulm, DE
Markus Buck · Biberach, DE
Julien Premont · Ulm, DE

Key dates

Filing date	Oct 30, 2013
Grant date	Jan 14, 2020
Priority date	—
Expiry date	Oct 30, 2033

Classification

Technology area (CPC H)Electricity
CPC primaryH04R2499/13
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

Methods and apparatus for frequency selective signal mixing for speech enhancement. In one embodiment frequency-based channel selection is performed for signal magnitude, signal energy, and noise estimate using speaker activity detection information, signal-to-noise ratio, and/or signal level, Frequency-based channel selection is performed for a dynamic spectral floor to adjust the noise estimate using speaker dominance information. Noise reduction is performed on the signal for the selected channel.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.