Dense grid framelets with symmetric lowpass and bandpass filters
A. Farras Abdelnour · 2007
The paper presents new tight frame dyadic limit functions with dense time-frequency grid. The underlying lowpass and band-pass filters possess linear phase. The filterbank has additionally two highpass filters which are identical within one sample shift. This leads to wavelets which approximate shift-invariance. The filters in this paper are FIR and have vanishing moments.