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Extracting Room Reverberation Time from Speech Using Artificial Neural Networks

Cox, TJ, Li, FF and Darlington, P 2001, 'Extracting Room Reverberation Time from Speech Using Artificial Neural Networks' , Journal of the Audio Engineering Society, 49 (4) , pp. 219-230.

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Abstract

A novel method to extract the reverberation time from reverberated speech utterances is presented. In this study, speech utterances are restricted to pronounced digits; uncontrolled discourse is not considered. The reverberation times considered are wide band, within the frequency range of speech utterances. A multilayer feed forward neural network is trained on speech examples with known reverberation times generated by a room simulator. The speech signals are preprocessed by calculating short-term rms values. A second decision-based neural network is added to improve the reliability of the predictions. In the retrieve phase, the trained neural networks extract room reverberation times from speech signals picked up in the rooms to an accuracy of 0.1 s. This provides an alternative to traditional measurement methods and facilitates the occupied measurement of room reverberation times.

Item Type: Article
Themes: Subjects / Themes > Q Science > QC Physics > QC221-246 Acoustics - Sound
Subjects outside of the University Themes
Schools: Colleges and Schools > College of Science & Technology > School of the Built Environment
Colleges and Schools > College of Science & Technology > School of Computing, Science and Engineering > Acoustics Research Centre
Journal or Publication Title: Journal of the Audio Engineering Society
Publisher: Audio Engineering Society Inc
Refereed: Yes
ISSN: 0004-7554
Depositing User: H Kenna
Date Deposited: 11 Sep 2007 14:27
Last Modified: 20 Aug 2013 16:47
URI: http://usir.salford.ac.uk/id/eprint/436

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