Identification of vocal tract state before and after swallowing using acoustic features
Identification of vocal tract state before and after swallowing using acoustic features
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利用声学特征识别吞咽前后的声道状态
DOI：
10.1109/gcce56475.2022.10014393
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发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Shingo Kuroiwa
中科院分区：
文献类型：
--
作者：
Aoi Sugita;Masafumi Nishida;Masafumi Nishimura;Yasuo Horiuchi;Shingo Kuroiwa
吞咽后残留在咽部的食物是误吸的原因之一。为了检测咽部的残留食物，我们研究了一种非侵入性的方法，该方法仅从声音来估计包括咽部在内的声道的状况。在这项研究中，我们检查了四种声道状态的识别：吞咽前，干吞咽（吞咽唾液）后，吞咽水后，吞咽酸奶后。为了识别四种声道状态，我们采用了对数功率谱包络和支持向量机（SVM）。除了通常的四类识别对应的四个声道状态，两种方法被认为是提高对扬声器之间的变化的鲁棒性：1）的方法，同时确定声道状态和扬声器（4类扬声器的数量）和2）扬声器归一化的方法。实验结果表明，在说话人封闭条件下，不进行说话人归一化的4状态16说话人识别方法具有最高的识别率。另一方面，在说话人开放的条件下，准确率仍然很低，虽然归一化提高了识别率。
Residual food in the pharynx after swallowing is one of the causes of aspiration. To detect residual food in the pharynx, we investigate a noninvasive method that estimates the condition of the vocal tract, which includes the pharynx, only from voice. In this study, we examined the identification of four vocal tract states: before swallowing, after dry swallowing (swallowing saliva), after water swallowing, and after drinkable yogurt swallowing. To identify the four vocal tract states, we employed a log-power spectral envelope and a support vector machine (SVM). In addition to the usual four-class identification corresponding to the four vocal tract states, two methods were considered to improve robustness against variation among speakers: 1) a method that simultaneously determines the vocal tract state and the speaker (4-classnumber of speakers) and 2) a method of speaker normalization. Experimental results indicated that the proposed method (4 states16 speakers) without speaker normalization had the highest identification rate under the speaker-closed condition. On the other hand, under the speaker-open condition, the accuracy was still low, although normalization improved the identification rate.
影响因子：
1.7
作者：
Kang, Young Ae;Kim, Jaeock;Koo, Bon Seok
通讯作者：
Koo, Bon Seok
通过呼吸和吞咽声音分析进行无声误吸检测
DOI：
10.1109/embc.2012.6346496
发表时间：
2012
期刊：
2012 Annual International Conference of the IEEE Engineering in Medicine and Biology Society
影响因子：
--
作者：
Samaneh Sarraf Shirazi;Z. Moussavi
通讯作者：
Z. Moussavi
吞咽前、吞咽中和吞咽后误吸的修订分类及其可靠性
DOI：
10.11336/jjcrs.7.51
发表时间：
2016
期刊：
Japanese Journal of Comprehensive Rehabilitation Science
影响因子：
--
作者：
Takashi Tanaka;H. Kagaya;Yasunori Ozeki;W. Fujii;Takatoshi Iida;S. Shibata;Saki Tomita;Yuriko Ishiguro;K. Ota;E. Saitoh
通讯作者：
E. Saitoh