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Research about the selection methods on various combination characteristic parameters in speech recognition system based on small vocabulary and isolated words
Pages: 48-53
Year: Issue:  3
Journal: Electronic Measurement Technology

Keyword:  speech feature parametersshort-time energypitch periodvector quantization;
Abstract: 针对语音识别系统的多种语音特征参数进行了阐述,详细分析了语音特征参数中反映语音特性和说话人特征的美尔倒谱参数(MFCC)、差分美尔倒谱参数(△MFCC,△2MFCC)、语音短时能量(Eg)以及语音基音周期参数(Ts).在不同特征参数阶数下,将多种特征参数进行组合并将组合特征参数分别通过基于矢量量化(VQ)算法的语音识别系统进行验证,实验结果表明,在小词汇量孤立词语音识别系统中,基于MFCC、△MFCC、Eg和Ts的组合特征参数既能够较好的反应语音的动静态特性又对不同说话人的语音具有良好的区分度,为语音特征参数的研究提供了重要参考.
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