Patent · US Active

Audio source separation

US10410641B2 · kind B2 · utility

1Cited by

7References

15Claims

0Family size

Assignee

Dolby Laboratories Licensing Corporation · US

Inventors

Jun Wang · Beijing, CN
Lie Lu · Beijing, CN
Qingyuan Bin · Beijing, CN

Key dates

Filing date	Apr 6, 2017
Grant date	Sep 10, 2019
Priority date	—
Expiry date	Apr 6, 2037

Classification

Technology area (CPC H)Electricity
CPC primaryH04S2400/01
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

The present document describes a method (100) for extracting audio sources (301) from audio channels (302). The method (100) includes updating (102) a Wiener filter matrix based on a mixing matrix from a source matrix and based on a power matrix of the audio sources (301). Furthermore, the method (100) includes updating (103) a cross-covariance matrix of the audio channels (302) and of the audio sources (301) and an auto-covariance matrix of the audio sources (301), based on the updated Wiener filter matrix and based on an auto-covariance matrix of the audio channels (302). In addition, the method (100) includes updating (104) the mixing matrix and the power matrix based on the updated cross-covariance matrix of the audio channels (302) and of the audio sources (301), and/or based on the updated auto-covariance matrix of the audio sources (301).

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