Abstract
This paper investigates the estimation of fusion weights under varying acoustic noise conditions for audio-visual multi-level hybrid fusion strategy in speaker identification. The multi-level fusion combines model level and decision level fusion via dynamic Bayesian networks (DBNs). A novel methodology known as support vector regression (SVR) is utilized to estimate the fusion weights directly from audio features; Sigma-Pi network sampling method is also incorporated to reduce feature dimensions. Experiments on the homegrown Chinese database and CMU English database both demonstrate that the method improves the accuracies of audio-visual bimodal speaker identification under dynamically varying acoustic noise conditions.
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© 2006 Springer-Verlag Berlin Heidelberg
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Wu, Z., Cai, L., Meng, H.M. (2006). Weight Estimation for Audio-Visual Multi-level Fusion in Bimodal Speaker Identification. In: Huang, DS., Li, K., Irwin, G.W. (eds) Intelligent Computing in Signal Processing and Pattern Recognition. Lecture Notes in Control and Information Sciences, vol 345. Springer, Berlin, Heidelberg . https://doi.org/10.1007/978-3-540-37258-5_144
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DOI: https://doi.org/10.1007/978-3-540-37258-5_144
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-37257-8
Online ISBN: 978-3-540-37258-5
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