Single-Channel Maximum-Likelihood T60 Estimation Exploiting Subband Information

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Details zur Publikation

Autor(en): Löllmann H, Brendel A, Vary P, Kellermann W
Verlagsort: New Paltz (New York), USA
Jahr der Veröffentlichung: 2015
Seitenbereich: 1-5
Sprache: Englisch


This contribution presents four algorithms developed by the authors for
single-channel fullband and subband T60 estimation within the ACE challenge.
The blind estimation of the fullband reverberation time (RT) by
maximum-likelihood (ML) estimation based on [15] is considered as baseline
approach. An improvement of this algorithm is devised where an energy-weighted
averaging of the upper subband RT estimates is performed using either a DCT or
1/3-octave filter-bank. The evaluation results show that this approach leads to
a lower variance for the estimation error in comparison to the baseline
approach at the price of an increased computational complexity. Moreover, a new
algorithm to estimate the subband RT is devised, where the RT estimates for the
lower octave subbands are extrapolated from the RT estimates of the upper
subbands by means of a simple model for the frequency-dependency of the subband
RT. The evaluation results of the ACE challenge reveal that this approach
allows to estimate the subband RT with an estimation error which is in a
similar range as for the presented fullband RT estimators.

FAU-Autoren / FAU-Herausgeber

Brendel, Andreas
Lehrstuhl für Multimediakommunikation und Signalverarbeitung
Kellermann, Walter Prof. Dr.-Ing.
Professur für Nachrichtentechnik
Löllmann, Heinrich Dr.-Ing.
Professur für Nachrichtentechnik


Löllmann, H., Brendel, A., Vary, P., & Kellermann, W. (2015). Single-Channel Maximum-Likelihood T60 Estimation Exploiting Subband Information. In Proceedings of the ACE Challenge Workshop (pp. 1-5). New Paltz (New York), US: New Paltz (New York), USA.

Löllmann, Heinrich, et al. "Single-Channel Maximum-Likelihood T60 Estimation Exploiting Subband Information." Proceedings of the ACE Challenge Workshop, New Paltz (New York) New Paltz (New York), USA, 2015. 1-5.


Zuletzt aktualisiert 2019-16-04 um 03:23