arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2302.14564cs.SDcs.AIeess.AS
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探索自监督预训练ASR模型用于构音障碍和老年语音识别

Exploring Self-supervised Pre-trained ASR Models For Dysarthric and Elderly Speech Recognition

The Chinese University of Hong Kong(香港中文大学);Institute of Software, Chinese Academy of Sciences(中国科学院软件研究所)

Shujie Hu, Xurong Xie, Zengrui Jin, Mengzhe Geng, Yi Wang, Mingyu Cui, Jiajun Deng, Xunying Liu, Helen Meng

AI总结:

本文探索将领域自适应wav2vec2.0模型集成到TDNN/Conformer ASR系统,通过特征融合、联合解码和多遍重评分,在构音障碍和老年语音识别上取得显著WER降低,达到最低已发表结果。

摘要:

自动识别障碍和老年语音至今仍是一项极具挑战性的任务,原因在于难以大规模收集此类数据。本文探索了一系列方法,将领域自适应的SSL预训练模型集成到TDNN和Conformer ASR系统中,用于构音障碍和老年语音识别:a) 标准声学前端与领域自适应wav2vec2.0语音表示之间的输入特征融合;b) 分别仅使用标准声学特征以及额外使用wav2vec2.0特征训练的TDNN系统的帧级联合解码;c) 涉及TDNN/Conformer系统输出的多遍解码,使用领域自适应wav2vec2.0模型进行重新评分。此外,利用领域自适应wav2vec2.0表示进行声学-发音(A2A)反演,构建多模态构音障碍和老年语音识别系统。在UASpeech构音障碍和DementiaBank Pitt老年语音语料库上进行的实验表明,集成领域自适应wav2vec2.0模型的TDNN和Conformer ASR系统在两个任务上分别以8.22%和3.43%的绝对WER降低(相对降低26.71%和15.88%)持续优于独立的wav2vec2.0模型,且具有统计显著性。在UASpeech测试集(16名构音障碍说话者)上获得了最低的已发表WER 22.56%(极低可懂度上为52.53%,未见词上为39.09%),在DementiaBank Pitt测试集上获得了18.17%的WER。

英文摘要:

Automatic recognition of disordered and elderly speech remains a highly challenging task to date due to the difficulty in collecting such data in large quantities. This paper explores a series of approaches to integrate domain adapted SSL pre-trained models into TDNN and Conformer ASR systems for dysarthric and elderly speech recognition: a) input feature fusion between standard acoustic frontends and domain adapted wav2vec2.0 speech representations; b) frame-level joint decoding of TDNN systems separately trained using standard acoustic features alone and with additional wav2vec2.0 features; and c) multi-pass decoding involving the TDNN/Conformer system outputs to be rescored using domain adapted wav2vec2.0 models. In addition, domain adapted wav2vec2.0 representations are utilized in acoustic-to-articulatory (A2A) inversion to construct multi-modal dysarthric and elderly speech recognition systems. Experiments conducted on the UASpeech dysarthric and DementiaBank Pitt elderly speech corpora suggest TDNN and Conformer ASR systems integrated domain adapted wav2vec2.0 models consistently outperform the standalone wav2vec2.0 models by statistically significant WER reductions of 8.22% and 3.43% absolute (26.71% and 15.88% relative) on the two tasks respectively. The lowest published WERs of 22.56% (52.53% on very low intelligibility, 39.09% on unseen words) and 18.17% are obtained on the UASpeech test set of 16 dysarthric speakers, and the DementiaBank Pitt test set respectively.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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