-1
$\begingroup$

Hello What are the numbers of Daubechies and Complex Gaussian are called?
I dont know what to call db4 or cgau8.

$\endgroup$
1
$\begingroup$

For Daubechies wavelet, convention is dbN, where N is the number of vanishing moments.

In case of Complex Gaussian wavelet number describes derivative order:

$$\mathrm{cgau}(x)=C_n\left[e^{-ix}e^{-x^2}\right]^{(p)}$$

| improve this answer | |
$\endgroup$
  • $\begingroup$ Thanks a lot. So I can say: (cgau4)>Complex Gaussian wavelet with 4th derivative order. (db4)> daubechie wavelet with 4th vanishing moments. Right? @jojek $\endgroup$ – SAH Sep 3 '14 at 13:23
  • $\begingroup$ Indeed. I used to say Complex Gaussian wavelet based on 4th order derivative. $\endgroup$ – jojek Sep 3 '14 at 13:42
  • $\begingroup$ Thanks @jojek do you say: daubechie wavelet with 4th vanishing moments? or daubechie wavelet with 4th vanishing moments order, or what? $\endgroup$ – SAH Sep 3 '14 at 14:33
  • $\begingroup$ It's not 4th but 4. There is a four vanishing moments. $\endgroup$ – jojek Sep 3 '14 at 14:43

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.