机器学习分类器用于模拟房间声学下的语音健康评估
Ahmed M Yousef1, Eric J Hunter1
1Department of Communication Sciences and Disorders, University of Iowa, Iowa City, Iowa 52240, USA.
用于检测语音障碍的机器学习 (ML) 模型需要强大的训练数据. 通过增加回声来增加录音,可以提高 ML 模型的可靠性,以便在现实世界中对声音健康进行评估.
科学领域:
- 语音处理 语音处理
- 机器学习 机器学习
- 生物医学工程 生物医学工程
背景情况:
- 语音障碍的检测依赖于准确的声音特征分析.
- 机器学习 (ML) 模型看起来有希望,但可能对数据质量变化敏感.
- 现实世界的声学条件,如反响,可以降低性能.
研究的目的:
- 评估机器学习模型在声下检测语音障碍的稳定性.
- 评估数据增强与模拟反响对ML模型性能的影响.
- 确定最佳的ML策略,以在各种声环境中可靠地检测语音障碍.
主要方法:
- 利用来自稳定元音样本的常见声声健康评估特征 (135种病理,49种对照).
- 训练并测试了六个ML分类器 (包括SVM,k-NN,随机森林) 在干净和反响增强数据上.
- 在干净,短 (0.48s) 和长 (1.82s) 的反响条件下评估检测性能.
主要成果:
- 支持向量机 (SVM) 和k-最近的邻居 (k-NN) 显示了可靠的准确性与短反响.
- 随机森林在清洁数据上实现了高精度,但对增强条件的概括性不佳.
- 反响显著影响了一些ML分类器的性能.
结论:
- 在反响增强数据上训练和测试ML模型对于提高可靠性至关重要.
- ML模型需要在不同的声学条件下进行验证,以实际检测语音障碍.
- 数据增强策略对于开发基于ML的强大语音健康评估工具至关重要.
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