Multiple view time-frequency distributions

We propose a new approach for constructing time-frequency distributions and spectra which achieves improved localisation in the time-frequency plane while retaining the non-negativity property of an energy distribution. The approach is to construct a composite distribution from multiple views of the Wigner-Ville distribution. Each view is obtained by smoothing the WVD with an asymmetric Gaussian kernel of sufficient time-bandwidth product to ensure non-negativity. Different views are generated by rotating the orientation of the Gaussian kernel in the time-frequency plane. Within the general multiple view framework we state and demonstrate one ad-hoc procedure for combining the views and suggest a second