Improved DTW algorithm on isolated-word speech recognition

doi:10.3778/j.issn.1002-8331.2010.25.035

Computer Engineering and Applications ›› 2010, Vol. 46 ›› Issue (25): 118-120.DOI: 10.3778/j.issn.1002-8331.2010.25.035

• 数据库、信号与信息处理 • Previous Articles Next Articles

Improved DTW algorithm on isolated-word speech recognition

JI Qing-bo^1，2，LU Kan²，LI Kang²

1.School of Automation Science and Electrical Engineering，Beihang University，Beijing 100191，China
2.Information and Communication Engineering College，Harbin Engineering University，Harbin 150001，China

Received:2009-10-30 Revised:2010-03-15 Online:2010-09-01 Published:2010-09-01
Contact: JI Qing-bo

在孤立词语音识别中动态时间规正的改进算法

汲清波^1，2，卢侃²，李康²

1.北京航空航天大学自动化科学与电气工程学院，北京 100191
2.哈尔滨工程大学信息与通信工程学院，哈尔滨 150001

通讯作者: 汲清波

Abstract

Abstract: Dynamic Time Warping is a kind of classical algorithm in speech recognition system.Because the algorithm is simple and valid，it achieves extensive application in speech recognition of single word.This paper raises improved DTW algorithm with twice time warping，so that it will make program normative and reduce the calculation work.Analysis of the simulation results shows that the improved DTW algorithm not only can increase recognition speed but also improve practicability of speech recognition system，without reducing recognition rate.

Key words: speech recognition, Dynamic Time Warping（DTW）, similarity

摘要： 动态时间规正（Dynamic Time Warping）是语音识别中的一种经典算法，算法简单有效，因此在实现孤立词识别系统中获得了广泛的应用。提出一种DTW的改进算法，采用两次在时间域上的规正，使计算程序简洁规范，计算量减少。经实验验证，改进DTW算法在不降低识别率的前提下，提高了识别速度，提高了系统的实用性。

关键词: 语音识别, 动态时间规正算法, 相似度

CLC Number:

TP391.42

JI Qing-bo^1，2，LU Kan²，LI Kang². Improved DTW algorithm on isolated-word speech recognition[J]. Computer Engineering and Applications, 2010, 46(25): 118-120.

汲清波^1，2，卢侃²，李康². 在孤立词语音识别中动态时间规正的改进算法[J]. 计算机工程与应用, 2010, 46(25): 118-120.

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Improved DTW algorithm on isolated-word speech recognition

在孤立词语音识别中动态时间规正的改进算法

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