Systems, methods, apparatus, and computer-readable media for coherence detection

Abstract

The invention relates to systems, methods, apparatus, and computer-readable media for coherence detection. Based on phase differences between corresponding frequency components of different channels of a multichannel signal, a measure of directional coherency is calculated. Application of such a measure to voice activity detection and noise reduction are also disclosed.

Description

[0001] Information about divisional applications [0002] This case is a divisional application. The parent case of this case is that the international application number is PCT / US2009 / 062098, the application date is October 26, 2009, the application number is 200980142303.4 after the PCT application entered the Chinese national phase, and the invention name is "system and method for consistency detection" and equipment” patent application. [0003] Claim of priority under 35 U.S.C. §119 [0004] This patent application claims the title of "Motivation for multi mic phase correlation based masking scheme" filed on October 24, 2008 and assigned to the assignee Priority to U.S. Provisional Patent Application No. 61 / 108,447. This patent application also asserts that the patent application filed on June 9, 2009 and assigned to the assignee is entitled "Systems, methods, apparatus, and computer- readable media for coherence detection)" U.S. Provisional Patent Application No. 61...

AI Technical Summary

Problems solved by technology

For example, in these cases an appropriate noise reference may not be directly available and it may be necessary to derive the noise reference indirectly

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