GDL

Journal from gdlhub / 2017-08-25 09:15:54
Oleh : Seng Kheang, Kouichi Katsurada, Yurie Iribe, Tsuneo Nitta, ITB
Dibuat : 2014-08-25, dengan 1 file

Keyword : grapheme generation rules (GGR); combined grapheme-phoneme information; two-stage model; grapheme-to-phoneme (G2P); automatic text-tophonetic transcription
Url : http://journals.itb.ac.id/index.php/jictra/article/view/727
Sumber pengambilan dokumen : web

The precise conversion of arbitrary text into its corresponding phoneme sequence (grapheme-to-phoneme or G2P conversion) is implemented in speech synthesis and recognition, pronunciation learning software, spoken term detection and spoken document retrieval systems. Because the quality of this module plays an important role in the performance of such systems and many problems regarding G2P conversion have been reported, we propose a novel two-stage model-based approach, which is implemented using an existing weighted finite-state transducer-based G2P conversion framework, to improve the performance of the G2P conversion model. The first-stage model is built for automatic conversion of words to phonemes, while the second-stage model utilizes the input graphemes and output phonemes obtained from the first stage to determine the best final output phoneme sequence. Additionally, we designed new grapheme generation rules, which enable extra detail for the vowel and consonant graphemes appearing within a word. When compared with previous approaches, the evaluation results indicate that our approach using rules focusing on the vowel graphemes slightly improved the accuracy of the out-of-vocabulary dataset and consistently increased the accuracy of the in-vocabulary dataset.

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