The impact of phonological rules on Arabic speech recognition

The impact of phonological rules on Arabic speech recognition The pronunciation variation is a well-known phenomenon that has been widely investigated for automatic speech recognition (ASR). The knowledge-based phonological rules are generally used to capture the accurate phonetic realization in order to minimize the mismatch between the ASR dictionary and the actual phonetic representation of the speech signal. For the Arabic ASR, there are a number of studies that employ these rules on Arabic ASR systems; however, little research has been devoted to measure the precise performance of each rule. In this paper, we aim at finding the exact effect of each rule as well as the rules that have no influence. We used the Carnegie Mellon University PocketSphinx speech recognizer with a new “in-house” modern standard Arabic speech corpus that contains 19 h for training and 3.7 h for testing. We evaluated the effect of three famous rules (Shadda, Tanween, and the solar letters). The experimental results do not show clear evidence that using phonological rules for ASR dictionary adaptation can enhance the performance for within-word pronunciation variation. The obtained results might be an indication to rethink or use other ASR performance aspects, such as cross-word pronunciation variation and the optimal phonemes set of the Arabic language. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png International Journal of Speech Technology Springer Journals

The impact of phonological rules on Arabic speech recognition

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Publisher
Springer US
Copyright
Copyright © 2017 by Springer Science+Business Media, LLC
Subject
Engineering; Signal,Image and Speech Processing; Social Sciences, general; Artificial Intelligence (incl. Robotics)
ISSN
1381-2416
eISSN
1572-8110
D.O.I.
10.1007/s10772-017-9440-2
Publisher site
See Article on Publisher Site

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