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US 2005/0111656 A1Published application
Modified affine projection algorithm for non-stationary signal
AssigneeZarlink Semiconductor Inc.
InventorGary Jin
Life of this patent
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Abstract
An affine projection or like algorithm is used to process a non-stationary signal. The affine projection algorithm creates an inverse matrix and includes a factor γ to avoid numerical instability in the inverse matrix. The factor γ is adaptively adjusted according to the characteristics of the signal.
Claims20
A method of processing a non-stationary signal comprising:
- applying an adaptive echo cancellation algorithm that creates an inverse matrix to said non-stationary signal;
- and
- adaptively adjusting the condition of said matrix according to the characteristics of said signal.
Signal processing apparatus for processing a non-stationary signal comprising:
- an adaptive filter employing an echo cancellation algorithm that creates an inverse matrix to said non-stationary signal;
- and
- a control unit for adaptively adjusting the condition of said matrix according to the characteristics of said signal.
Dependencies are inferred from the claim text.