Open Domain Continuous Filipino Speech Recognition: Challenges and Baseline Experiments

Federico ANG  Rowena Cristina GUEVARA  Yoshikazu MIYANAGA  Rhandley CAJOTE  Joel ILAO  Michael Gringo Angelo BAYONA  Ann Franchesca LAGUNA  

Publication
IEICE TRANSACTIONS on Information and Systems   Vol.E97-D   No.9   pp.2443-2452
Publication Date: 2014/09/01
Online ISSN: 1745-1361
DOI: 10.1587/transinf.2013EDP7442
Type of Manuscript: PAPER
Category: Speech and Hearing
Keyword: 
filipino speech,  automatic speech recognition,  statistical learning,  

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Summary: 
In this paper, a new database suitable for HMM-based automatic Filipino speech recognition is described for the purpose of training a domain-independent, large-vocabulary continuous speech recognition system. Although it is known that high-performance speech recognition systems depend on a superior speech database used in the training stage, due to the lack of such an appropriate database, previous reports on Filipino speech recognition had to contend with serious data sparsity issues. In this paper we alleviate such sparsity through appropriate data analysis that makes the evaluation results more reliable. The best system is identified through its low word-error rate to a cross-validation set containing almost three hours of unknown speech data. Language-dependent problems are discussed, and their impact on accuracy was analyzed. The approach is currently data driven, however it serves as a competent baseline model for succeeding future developments.