16 citations · 35 across the 5 of their papers we have counts for
7 papers
Continuous warped time-frequency representations - Coorbit spaces and discretization
Nicki Holighaus, Christoph Wiesmeyr, Peter Balazs
We present a novel family of continuous, linear time-frequency transforms adaptable to a multitude of (nonlinear) frequency scales. Similar to classical time-frequency or time-scal…
A class of warped filter bank frames tailored to non-linear frequency scales
Nicki Holighaus, Christoph Wiesmeyr, Zdeněk Průša
A method for constructing non-uniform filter banks is presented. Starting from a uniform system of translates, generated by a prototype filter, a non-uniform covering of the freque…
Optimal Window and Lattice in Gabor Transform Application to Audio Analysis
Helene Lachambre, Benjamin Ricaud, Guillaume Stempfel +3
This article deals with the use of optimal lattice and optimal window in Discrete Gabor Transform computation. In the case of a generalized Gaussian window, extending earlier contr…
An optimally concentrated Gabor transform for localized time-frequency components
Benjamin Ricaud, Guillaume Stempfel, Bruno Torrésani +3
Gabor analysis is one of the most common instances of time-frequency signal analysis. Choosing a suitable window for the Gabor transform of a signal is often a challenge for practi…
Spectrum-Adapted Tight Graph Wavelet and Vertex-Frequency Frames
David I Shuman, Christoph Wiesmeyr, Nicki Holighaus +1
We consider the problem of designing spectral graph filters for the construction of dictionaries of atoms that can be used to efficiently represent signals residing on weighted gra…
Efficient algorithms for discrete Gabor transforms on a nonseparable lattice
Christoph Wiesmeyr, Nicki Holighaus, Peter L. Soendergaard
The Discrete Gabor Transform (DGT) is the most commonly used transform for signal analysis and synthesis using a linear frequency scale. It turns out that the involved operators ar…