arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2003.00864eess.AScs.CLcs.SD
收藏

基于x向量嵌入的病态语音检测

Pathological speech detection using x-vector embeddings

Catarina Botelho, Francisco Teixeira, Thomas Rolland, Alberto Abad, Isabel Trancoso

摘要:

言语作为一种非侵入性生物标志物来评估说话者的健康状况的潜力已经得到了多项工作结果的反复支持,包括身体和心理状况。传统的基于语音的疾病分类系统专注于精心设计的基于知识的特征。然而,这些特征可能并不代表疾病的全部病理学,甚至可能忽略其更微妙的表现。这促使研究人员转向一般说话人表示的方向,这些表示固有地模拟症状,例如高斯超向量,i向量和x向量。在这项工作中,我们专注于后者,以评估其适用性作为一个通用的特征提取方法检测帕金森氏病(PD)和阻塞性睡眠呼吸暂停(OSA)。我们测试我们的方法对知识为基础的功能和i向量,并报告结果为两个欧洲葡萄牙语语料库,OSA和PD,以及额外的西班牙语语料库PD。x向量和i向量模型都是用域外欧洲葡萄牙语语料库训练的。我们的研究结果表明,x向量能够比基于知识的特征在相同的语言语料库中表现得更好。此外,虽然x向量在匹配条件下的表现与i向量相似,但当域失配发生时,它们的表现明显优于i向量。

英文摘要:

The potential of speech as a non-invasive biomarker to assess a speaker's health has been repeatedly supported by the results of multiple works, for both physical and psychological conditions. Traditional systems for speech-based disease classification have focused on carefully designed knowledge-based features. However, these features may not represent the disease's full symptomatology, and may even overlook its more subtle manifestations. This has prompted researchers to move in the direction of general speaker representations that inherently model symptoms, such as Gaussian Supervectors, i-vectors and, x-vectors. In this work, we focus on the latter, to assess their applicability as a general feature extraction method to the detection of Parkinson's disease (PD) and obstructive sleep apnea (OSA). We test our approach against knowledge-based features and i-vectors, and report results for two European Portuguese corpora, for OSA and PD, as well as for an additional Spanish corpus for PD. Both x-vector and i-vector models were trained with an out-of-domain European Portuguese corpus. Our results show that x-vectors are able to perform better than knowledge-based features in same-language corpora. Moreover, while x-vectors performed similarly to i-vectors in matched conditions, they significantly outperform them when domain-mismatch occurs.

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。

↑