wavelet
3 ビュー (過去 30 日間)
古いコメントを表示
For octave wavelet coefficients feature extraction take all the 8 wavelet coefficients or take only for 8th coefficient?
0 件のコメント
採用された回答
Wayne King
2011 年 10 月 27 日
Hi Jaffino, the term "octave" as applied to the DWT is just referring to the dyadic scales. So you take all the coefficients at that scale. For example:
x = randn(1024,1);
[C,L] = wavedec(x,3,'db4');
d3 = detcoef(C,L,3);
d3 is the vector of coefficients at scale 3 (3rd octave). I think octave is a bit outdated now in the wavelet literature, better to refer to them as just scales.
0 件のコメント
その他の回答 (1 件)
maryam mosaffa
2018 年 1 月 14 日
How can i know the best wavelet mother i chose for my case study.please introduce me the best way of choosing wavelet mother in CWT toolbox?
0 件のコメント
参考
カテゴリ
Help Center および File Exchange で Continuous Wavelet Transforms についてさらに検索
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!