Section: New Software and Platforms

MATSPECTRO

Spectrogram reassignment

Keywords: Matlab - Visualization - Signal processing

Functional Description

This matlab function computes reassigned version of the conventional and multitaper spectrograms. The algorithm is based on Auger and Flandrin method, some parts are adopted from Fulop and Fitz. The idea is to first compute conventional spectrogram, then find optimal (in a sense of energy) time and frequency positions and reassigns values in the spectrogram to this new positions. The difference between conventional and multitaper spectrograms is that multitaper method computes additional spectrogram with each taper. Taper is a generic term for a window function but in this method tapers refer to Slepian sequences. As a result, generally multitaper spectrogram reveals less variance than conventional one.

• Contact: Mariia Fedotenkova

• URL: https://github.com/mfedoten/reasspectro