bi-orthogonal wavelet filter set
[Lo_D,Hi_D,Lo_R,Hi_R]=biorfilt(DF,RF)
orthfilt is an utility function for obtaining analysis and synthesis filter set of given bi-orthogonal spline wavelets. DF and RF should be output of biorfilt result with the same length.
[RF,DF]=biorwavf('bior3.3'); [lo_d,hi_d,lo_r,hi_r]=biorfilt(DF,RF);
Roger Liu and Isaac Zhi