Electrical audio signal processing systems and devices – Directive circuits for microphones
Reexamination Certificate
2004-01-16
2008-10-28
Chin, Vivian (Department: 2615)
Electrical audio signal processing systems and devices
Directive circuits for microphones
C381S094100, C381S093000, C702S190000, C702S191000
Reexamination Certificate
active
07443989
ABSTRACT:
An adaptive beamforming apparatus and method includes a fixed beamformer that compensates for time delays of M noise-containing speech signals input via a microphone array having M microphones (M is an integer greater than or equal to 2), and generates a sum signal of the M compensated noise-containing speech signals; and a multi-channel signal separator that extracts pure noise components from the M compensated noise-containing speech signals using M adaptive blocking filters that are connected to M adaptive canceling filters in a feedback structure and extracts pure speech components from the added signal using the M adaptive canceling filters that are connected to the M adaptive blocking filters in the feedback structure.
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Choi Chang-kyu
Kim Jay-woo
Kong Dong-geon
Chin Vivian
Paul Disler
Samsung Electronics Co,. Ltd.
Staas & Halsey , LLP
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