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Mismatched Training Data Enhancement for Automatic Recognition of Children’s Speech using DNN-HMM

Qian, Mengjie and McLoughlin, Ian and Quo, Wu and Dai, Lirong (2017) Mismatched Training Data Enhancement for Automatic Recognition of Children’s Speech using DNN-HMM. In: 2016 10th International Symposium on Chinese Spoken Language Processing (ISCSLP). IEEE. ISBN 978-1-5090-4295-1. E-ISBN 978-1-5090-4294-4. (doi:10.1109/ISCSLP.2016.7918386) (KAR id:57110)

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The increasing profusion of commercial automatic speech recognition technology applications has been driven by big-data techniques, using high quality labelled speech datasets. Children's speech has greater time and frequency domain variability than typical adult speech, lacks good large scale training data, and presents difficulties relating to capture quality. Each of these factors reduces the performance of systems that automatically recognise children's speech. In this paper, children's speech recognition is investigated using a hybrid acoustic modelling approach based on deep neural networks and Gaussian mixture models with hidden Markov model back ends. We explore the incorporation of mismatched training data to achieve a better acoustic model and improve performance in the face of limited training data, as well as training data augmentation using noise. We also explore two arrangements for vocal tract length normalisation and a gender-based data selection technique suitable for training a children's speech recogniser.

Item Type: Book section
DOI/Identification number: 10.1109/ISCSLP.2016.7918386
Uncontrolled keywords: speech; training data; hidden Markov models; speech recognition; data models; acoustics
Subjects: T Technology
Divisions: Divisions > Division of Computing, Engineering and Mathematical Sciences > School of Computing
Depositing User: Ian McLoughlin
Date Deposited: 06 Sep 2016 08:29 UTC
Last Modified: 16 Feb 2021 13:36 UTC
Resource URI: (The current URI for this page, for reference purposes)
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