A Multitaper Reassigned Spectrogram for Increased Time-Frequency Localization Precision
Maria Sandsten, Isabella Reinhold, Rachele Anderson
Abstract
The reassignment vectors of the matched reassigned spectrogram (MRS) have shown to be sensitive to noise, with resulting degraded precision in the time-frequency localization. In this paper we propose a multitaper reassignment (mtRS) method for estimation of time- and frequency locations of Gaussian envelope transients. We present novel expressions for the reassignment vectors with use of a non-matched window. These reassignment vectors are then averaged with the usual MRS reassignment vectors forming a multitaper reassignment with use of orthogonal windows. The mtRS is shown to give a higher precision in the time- and frequency estimates in low SNR compared to the usual MRS and also in comparison to other state-of-the-art methods.
BibTeX
@inproceedings{icassp2020_amultitaperreass,
title = {A Multitaper Reassigned Spectrogram for Increased Time-Frequency Localization Precision},
author = {Maria Sandsten and Isabella Reinhold and Rachele Anderson},
booktitle = {ICASSP 2020},
year = {2020}
}