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Hits 1 – 2 of 2
1
Improving End-To-End Modeling for Mispronunciation Detection with Effective Augmentation Mechanisms ...
Lo, Tien-Hong
;
Sung, Yao-Ting
;
Chen, Berlin
. - : arXiv, 2021
Abstract:
Recently, end-to-end (E2E) models, which allow to take spectral vector sequences of L2 (second-language) learners' utterances as input and produce the corresponding phone-level sequences as output, have attracted much research attention in developing mispronunciation detection (MD) systems. However, due to the lack of sufficient labeled speech data of L2 speakers for model estimation, E2E MD models are prone to overfitting in relation to conventional ones that are built on DNN-HMM acoustic models. To alleviate this critical issue, we in this paper propose two modeling strategies to enhance the discrimination capability of E2E MD models, each of which can implicitly leverage the phonetic and phonological traits encoded in a pretrained acoustic model and contained within reference transcripts of the training data, respectively. The first one is input augmentation, which aims to distill knowledge about phonetic discrimination from a DNN-HMM acoustic model. The second one is label augmentation, which manages to ... : 7 pages, 2 figures, 4 tables, accepted to Asia-Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA ASC 2021) ...
Keyword:
Artificial Intelligence cs.AI
;
Audio and Speech Processing eess.AS
;
FOS Computer and information sciences
;
FOS Electrical engineering, electronic engineering, information engineering
;
Sound cs.SD
URL:
https://arxiv.org/abs/2110.08731
https://dx.doi.org/10.48550/arxiv.2110.08731
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2
The NTNU Taiwanese ASR System for Formosa Speech Recognition Challenge 2020 ...
Chao, Fu-An
;
Lo, Tien-Hong
;
Weng, Shi-Yan
. - : arXiv, 2021
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