Why Wavelet 1-D Denoising in Matlab can only happen on approximation coefficients?
2 次查看(过去 30 天)
显示 更早的评论
I have been trying to get familiar with Wavelet toolbox in matlab for denoising purposes. I understand that wavelets assumes noise does not affect much low frequency bands which is why thresholding to denoise can only happen on details.
I also understand that details are for HPF and approximation are for the LPF part of the decomposition.
How can I apply thresholding on the approximation coefficients?
Also since my input to the Wavelet 1-D is discrete data without sampling frequency information how are the filter banks frequencies dictated when forming the decomposition?
0 个评论
回答(0 个)
另请参阅
类别
在 Help Center 和 File Exchange 中查找有关 Denoising and Compression 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!