Patent · US Active

Enhancement techniques for blind source separation (BSS)

US7970564B2 · kind B2 · utility

9Cited by

5References

33Claims

0Family size

Assignee

QUALCOMM Incorporated · US

Inventors

Song Wang · San Diego, US
Eddie L. T. Choy · Carlsbad, US
Samir Kumar Gupta · San Diego, US

Key dates

Filing date	Oct 20, 2006
Grant date	Jun 28, 2011
Priority date	—
Expiry date	Aug 5, 2029

Classification

Technology area (CPC G)Physics
CPC primaryG06F18/21343
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

This disclosure describes signal processing techniques that can improve the performance of blind source separation (BSS) techniques. In particular, the described techniques propose pre-processing steps that can help to de-correlate the different signals from one another prior to execution of the BSS techniques. In addition, the described techniques also propose optional post-processing steps that can further de-correlate the different signals following execution of the BSS techniques. The techniques may be particularly useful for improving BSS performance with highly correlated audio signals, e.g., from two microphones that are in close spatial proximity to one another.

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