.Wavelet.Families.wavDMeyer

Information

This function returns the filter bank of discrete Meyer wavelet, which is an approximation of continuous Meyer wavelet. The filters with the length of 102 points usually provide sufficient accuracy. However, such long filters might cause long calculation time. Therefore, this function provides the possibility to return shorter filters. The trade-off is lower accuracy. Please note that some lengths will cause significantly large errors. The default length is 22.

Interface

function wavDMeyer
  input Integer points = 22 "Filter length (<= 102). The complete length is used if this variable is <= 0";
  output Real F[:] "Scaling filter";
  output Real lod[:] "High pass filter for decomposition";
  output Real hid[:] "Low pass filter for decomposition";
  output Real lor[:] "High pass filter for reconstruction";
  output Real hir[:] "Low pass filter for reconstruction";
end wavDMeyer;