基于修正Mel频率映射的应力影响下变异语音识别方法  

Recognition of Speech Under G-Force Based on Modified Mel-frequence Scale

作　　者：马永林[1] 韩纪庆[1] 张磊[1] 王承发[1] 

机构地区：[1]哈尔滨工业大学计算机科学与工程系,哈尔滨150001

出　　处：《计算机工程与应用》2002年第20期75-76,91,共3页Computer Engineering and Applications

基　　金：国家自然科学基金(项目号:60085001);教育部留学回国人员科研启动基金资助

摘　　要：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。On the basis of analyzing the recognition of speech under G-Force by using each Mel-frequency scale,two kinds of modified Mel-frequency scales which can emphasize the effect of the middle frequency ranges are explored in this paper,consequently,the relative MFCCs are selected as the features for recognition of speech under G-Force.Using a classifier of stressed speech and the new features, some experiments are conducted, and it shows that the modified Mel-frequency are effective for stressed speech recognition.

关 键 词：修正 Mel频率映射 应力 变异语音识别 语音分类器 MEL倒谱系数 

分 类 号：TN912.34[电子电信—通信与信息系统]