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基于音素识别的语种辨识方法中的因子分析

, PP. 105-110

Keywords: 自动语种识别,因子分析,音素识别器

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Abstract:

在基于音素识别的语种辨识系统中,特定的一段语音,音素识别的结果会受到说话人和信道等干扰因素的影响。对此,文中基于音素搭配关系对每段语音构建相应的特征向量表示。在向量空间中,利用因子分析建立噪声子空间的数学描述模型,并在语言模型的训练和识别过程加以消除。在NISTLRE2007的测试任务中,相对于基于音素识别的语种辨识基线系统,该方法可有效提高系统性能。在30s时长测试中,基于音素识别的语言模型和基于音素识别的支持向量机模型的等错误率分别相对降低14。4%和12。9%。

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