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文章在对应力影响下变异语音进行分频带分析的基础上,选用了可以提升语音信号中频段影响的修正Mel频率映射,并将其对应的MFCC系数作为新的语音识别特征。通过采用正常/变异语音分类器和新特征来进行变异语音识别。实验结果表明:采用修正Mel频率映射的MFCC特征改进了变异语音的识别性能。
Based on the sub-band analysis of the variant speech under the influence of stress, the article selects a modified Mel frequency map that can enhance the influence of the intermediate frequency band of the speech signal and takes the corresponding MFCC coefficient as a new speech recognition feature. Variant speech recognition by using normal / variant speech classifiers and new features. Experimental results show that the MFCC feature of Modified Mel frequency mapping improves the recognition performance of variant speech.