Data processing: speech signal processing – linguistics – language – Speech signal processing – For storage or transmission
Reexamination Certificate
2004-07-15
2008-09-16
Hudspeth, David R. (Department: 2626)
Data processing: speech signal processing, linguistics, language
Speech signal processing
For storage or transmission
C381S094100
Reexamination Certificate
active
07426464
ABSTRACT:
The present invention uses a method of processing signals in which signals received from an array of sensors are subject to system having a first adaptive filter arranged to enhance a target signal and a second adaptive filter arranged to suppress unwanted signals. The output of the second filter is converted into the frequency domain, and further digital processing is performed in that domain. The invention is further enhanced by incorporating a third adaptive filter in the system and a novel method for performing improved signal processing of audio signals that are suitable for speech communication.
REFERENCES:
patent: 2002/0198704 (2002-12-01), Rajan et al.
patent: WO03/036614 (2003-05-01), None
Hui Siew Kok
Lim Khoon Seong
Loh Kok Heng
Pang Boon Teck
BITwave Pte Ltd.
Hudspeth David R.
Lawrence Y D Ho & Associates Pte. Ltd.
Neway Samuel G
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