Paper Info
Title
Articulatory feature based continuous speech recognition using probabilistic lexical modeling.
Abstract
Phonological studies suggest that the typical subword units such as phones or phonemes used in automatic speech recognition systems can be decomposed into a set of features based on the articulators used to produce the sound. Most of the current approaches to integrate articulatory feature (AF) representations into an automatic speech recognition (ASR) system are based on a deterministic knowledge-based phoneme-to-AF relationship. In this paper, we propose a novel two stage approach in the framework of probabilistic lexical modeling to integrate AF representations into an ASR system. In the first stage, the relationship between acoustic feature observations and various AFs is modeled. In the second stage, a probabilistic relationship between subword units and AFs is learned using transcribed speech data. Our studies on a continuous speech recognition task show that the proposed approach effectively integrates AFs into an ASR system. Furthermore, the studies show that either phonemes or graphemes can be used as subword units. Analysis of the probabilistic relationship captured by the parameters has shown that the approach is capable of adapting the knowledge-based phoneme-to-AF representations using speech data; and allows different AFs to evolve asynchronously. (C) 2015 Elsevier Ltd. All rights reserved.
Year
DOI
Venue
2016
10.1016/j.csl.2015.04.003
Computer Speech & Language
Keywords
Field
DocType
Automatic speech recognition,Articulatory features,Probabilistic lexical modeling,Kullback–Leibler divergence based hidden Markov model,Phoneme subword units,Grapheme subword units
Computer science,Speech recognition,Artificial intelligence,Natural language processing,Probabilistic logic,Feature based
Journal
Volume
Issue
ISSN
36
C
0885-2308
Citations 
PageRank 
References 
3
0.38
46
Authors
2
Name
Order
Citations
PageRank
Ramya Rasipuram1576.90
Mathew Magimai-Doss251654.76