Quantization noise reduction using wavelet thresholding for various coding schemes

1995 ◽  
Author(s):  
Dong Wei ◽  
Markus Lang ◽  
Haitao Guo ◽  
Jan E. Odegard ◽  
C. Sidney Burrus
Keyword(s):  
Noise Reduction ◽  
Quantization Noise ◽  
Wavelet Thresholding ◽  
Coding Schemes

A SMOOTHING ALGORITHM FOR NONLINEAR TIME SERIES

2004 ◽  
Vol 14 (03) ◽  
pp. 1037-1051 ◽  
Author(s):  
S. A. BILLINGS ◽  
K. L. LEE
Keyword(s):  
Time Series ◽  
Noise Reduction ◽  
Cross Validation ◽  
User Interaction ◽  
Nonlinear Time Series ◽  
Smoothing Algorithm ◽  
Wavelet Thresholding ◽  
Numerical Examples ◽  
Validation Method

A new NARMA based smoothing algorithm is introduced for chaotic and nonchaotic time series. The new algorithm employs a cross-validation method to determine the smoother structure, requires very little user interaction, and can be combined with wavelet thresholding to further enhance the noise reduction. Numerical examples are included to illustrate the application of the new algorithm.

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