A multitaper reassigned spectrogram for increased time-frequency localization precision

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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.

Detaljer

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Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Signalbehandling
Originalspråkengelska
Titel på värdpublikation ICASSP 2020 - 2020 IEEE International Conference on Acoustics, Speech and Signal Processing
FörlagIEEE - Institute of Electrical and Electronics Engineers Inc.
Sidor5310-5314
ISBN (elektroniskt)978-1-5090-6631-5
StatusPublished - 2020
PublikationskategoriForskning
Peer review utfördJa
EvenemangIEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) 2020 - Centre de Convencions Internacional de Barcelona (CCIB), Barcelona, Spanien
Varaktighet: 2020 maj 42020 maj 8
https://2020.ieeeicassp.org/

Konferens

KonferensIEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) 2020
Förkortad titelICASSP 2020
LandSpanien
OrtBarcelona
Period2020/05/042020/05/08
Internetadress