  This paper offers a new regard on compactly supported wavelets derived from
FIR filters. Although being continuous wavelets, analytical formulation are
lacking for such wavelets. Close approximations for daublets (Daubechies
wavelets) and their spectra are introduced here. The frequency detection
properties of daublets are investigated through scalograms derived from these
new analytical expressions. These near-daublets have been implemented on the
Matlab wavelet toolbox and a few scalograms presented. This approach can be
valuable for wavelet synthesis from hardware or for application involving
continuous wavelet-based systems, such as wavelet OFDM.
