Normalization of pitch period in embedded speech recognition system

doi:10.3778/j.issn.1002-8331.2009.10.004

Computer Engineering and Applications ›› 2009, Vol. 45 ›› Issue (10): 11-12.DOI: 10.3778/j.issn.1002-8331.2009.10.004

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Normalization of pitch period in embedded speech recognition system

WANG Hong,WANG Xian-mei,YANG Yang

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

基音周期标准化与嵌入式语音识别系统

王宏,王先梅,杨扬

北京科技大学信息工程学院，北京 100083

通讯作者: 王宏

Abstract

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

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

WANG Hong,WANG Xian-mei,YANG Yang. Normalization of pitch period in embedded speech recognition system[J]. Computer Engineering and Applications, 2009, 45(10): 11-12.

王宏,王先梅,杨扬. 基音周期标准化与嵌入式语音识别系统[J]. 计算机工程与应用, 2009, 45(10): 11-12.

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Normalization of pitch period in embedded speech recognition system

基音周期标准化与嵌入式语音识别系统

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