I've deconstructed a short audio .wav signal into its 1D wavelet coefficients using wavemenu (db4, 6 levels). This gives mat files ([64*109340 double coefs], [1*64 double] scales, and wname).
I now want to reconstruct each of the D1 to D6 frequency/time scales into separate audio files with the frequency range changed (e.g. to 250Hz centre). I can combine these into one audio signal which has all of the original signal characteristics compressed into a particular frequency range through mixing but it would be instructive and interesting to be able to do this as part of the reconstruction process.
I'm presuming that I should use the wrcoef function but am unsure of which (C,L) coefficients to specify and how to address the frequency range translation issue. I thought that I could fiddle with the reconstruction parameters to achieve this latter aspect.
Any thoughts or advice?