Title:
STATISTICAL ADAPTIVE-FILTER CONTROLLER
Document Type and Number:
WIPO Patent Application WO2005002183
Kind Code:
A3
Abstract:
This invention describes a statistical adaptive-filter controller for digital acoustic echo control in hands-free telephones for achieving more consistent echo cancellation results (i.e. higher output signal quality) and simpler realizations of AEC units. The improvement using the simple statistical adaptive-filter controller is accomplished by optimizing a joint control of an echo canceller and a postfilter.
Inventors:
ENZNER GERALD (DE)
Application Number:
PCT/IB2004/002008
Publication Date:
April 28, 2005
Filing Date:
June 24, 2004
Export Citation:
Assignee:
NOKIA CORP (FI)
NOKIA INC (US)
ENZNER GERALD (DE)
NOKIA INC (US)
ENZNER GERALD (DE)
International Classes:
H04B3/20; H04M9/08; H04M; (IPC1-7): H04M9/08
Foreign References:
| US6160886A | 2000-12-12 | |||
| US6658107B1 | 2003-12-02 |
Other References:
ENZNER ET AL.: "Partitioned residual echo power estimation for frequency-domain acoustic echo cancellation and postfiltering", EUROPEAN TRANSACTION ON TELECOMMUNICATIONS, vol. 13, no. 2, March 2002 (2002-03-01) - April 2003 (2003-04-01), pages 103 - 114, XP001123748
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