A joint sparse wavelet coefficient extraction and adaptive noise reduction method in recovery of weak bearing fault features from a multi-component signal mixture.
Dong WangWei GuoXiaojuan WangPublished in: Appl. Soft Comput. (2013)
Keyphrases
- reduction method
- multi component
- wavelet coefficients
- wavelet thresholding
- low frequency
- high frequency
- feature vectors
- thresholding method
- spatially adaptive
- wavelet transform
- wavelet transformation
- wavelet packet transform
- image denoising
- non stationary
- subband
- wavelet domain
- signal to noise ratio
- feature set
- noise reduction
- wavelet decomposition
- hard thresholding
- neural network
- denoising algorithm
- noise model
- frequency domain
- classification accuracy
- feature space