Wavelet is not a true native time-frequency technique, technically it is time-scale in nature [1]. The better approach with better resolution is to use native

Wavelet is not a true native time-frequency technique, technically it is time-scale in nature [1]. The better approach with better resolution is to use native time-frequency technique for example non-linear Cohen class time-frequency but currently it requires massive computing resources even for a short duration [2]. Hopefully with the available of cheaper RAMs in the order of Terabytes it will be more feasible to use proper time-frequency techniques for big data signal processing. [1]Wavelet: https://en.m.wikipedia.org/wiki/Wavelet https://en.m.wikipedia.org/wiki/Wavelet [2]Bilinear time–frequency distribution: https://en.m.wikipedia.org/wiki/Bilinear_time%E2%80%93frequency_distribution https://en.m.wikipedia.org/wiki/Bilinear_time%E2%80%93freque...