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A feature selection and feature fusion combination method for speaker-independent speech emotion recognition

机译:一种独立于说话人的语音情感识别的特征选择与特征融合组合方法

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To enhance the recognition rate of speaker independent speech emotion recognition, a feature selection and feature fusion combination method based on multiple kernel learning is presented. Firstly, multiple kernel learning is used to obtain sparse feature subsets. The features selected at least n times are recombined into another subset named n-subset. The optimal n is determined by 10 cross-validation experiments. Secondly, feature fusion is made at the kernel level. Not only each kind of feature is associated with a kernel, but also the full feature set is associated with a kernel which is not considered in the previous studies. All of the kernels are added together to obtain a combination kernel. The final recognition rate for 7 kinds of emotions on Berlin Database is 83.10%, which outperforms state-of-the-art results and shows the effectiveness of our method. It is also proved that MFCCs play a crucial role in speech emotion recognition.
机译:为了提高说话人独立语音情感识别的识别率,提出了一种基于多核学习的特征选择与特征融合组合方法。首先,利用多核学习获得稀疏特征子集。至少选择了n次的特征会重新组合到另一个名为n-subset的子集中。最佳n由10个交叉验证实验确定。其次,特征融合是在内核级别进行的。不仅每种功能都与一个内核相关联,而且整个功能集也与一个内核相关联,这在以前的研究中并未考虑。将所有内核加在一起以获得组合内核。在柏林数据库中,对7种情绪的最终识别率是83.10%,优于最新结果,证明了我们方法的有效性。还证明了MFCC在语音情感识别中起着至关重要的作用。

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