Audio signal compression using circular wavelet packets
James F. Scholl, Daniel N. Rogovin · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 1994
We have successfully compressed audio signals using wavelet packets based on a recently developed fast wavelet transform (FWT) scheme using circular convolution with an adaptive hybrid filter/basis system. This algorithm gives perfect reconstruction of the data; edge effects are removed entirely. As a result, the quality of audio signal compression is much improved. To illustrate this, we present results from our comparison study where we compressed a test signal using these `circular wavelet packets' and wavelet packets based on the standard FWT.