计算机工程与应用 ›› 2009, Vol. 45 ›› Issue (10): 11-12.DOI: 10.3778/j.issn.1002-8331.2009.10.004

• 博士论坛 • 上一篇    下一篇

基音周期标准化与嵌入式语音识别系统

王 宏,王先梅,杨 扬   

  1. 北京科技大学 信息工程学院,北京 100083
  • 收稿日期:2008-12-02 修回日期:2009-01-07 出版日期:2009-04-01 发布日期:2009-04-01
  • 通讯作者: 王 宏

Normalization of pitch period in embedded speech recognition system

WANG Hong,WANG Xian-mei,YANG Yang   

  1. School of Information Engineering,University of Science and Technology of Beijing,Beijing 100083,China
  • Received:2008-12-02 Revised:2009-01-07 Online:2009-04-01 Published:2009-04-01
  • Contact: WANG Hong

摘要: 根据不同人发相同音节时,一个基音周期内的波形具有一定相似性的特点,提出一种新的基音周期标准化的语音信号预处理方法。该方法在一个嵌入式的、非特定人、孤立数字的语音识别系统中进行了验证,实验结果表明基音周期标准化能有效提高语音识别的准确率。

关键词: 基音周期标准化, 语音识别, 嵌入式系统

Abstract: Based on the similarity of the sound wave in a pitch period when different speakers articulate the same syllables,a new pre-process method of speech signal,normalization of pitch period has been proposed in this paper.The new pre-process method has been applied in an embedded speech recognition system designed for speaker-independent isolated digitals recognition.The experiment proves that the use of normalization of pitch period can obviously increase the accuracy of the recognition rate.

Key words: normalization of pitch period, speech recognition, embedded system