Abstract: In order to make the people find the appointed places more convenient in the unfamiliar environment, an intelligent guide system based on voice interaction in public places was designed and realized. First, according to the layout of the places, the shortest path could be gotten by Dijkstra algorithm. Then, the system could extract the feature of speech combine with the principle of speech recognition system, and match template based on Dynamic Time Warping algorithm. Finally, the people to arrive at the designated places could be guided by voice interaction. The system software and interface by MATLAB was operated, based on the actual tests, the designed system could be more intuitive and quick to implement the map navigation with speech interactive mode, and the voice recognition rate 87.75%.

Key words: Voice interaction, Intelligent guide system, Melfrequency cepstrum coefficients, Dynamic time warping, Dijkstra

摘要： 为了便于人们在陌生的公共场所更加方便、 快捷地找到指定地点, 设计并实现了公共场所智能语音
交互引导系统。首先根据场所的结构布局, 利用 D i j k s t r a算法求出最短路径, 再结合语音识别的原理, 提取语音特
征, 采用动态时间规整算法与模板进行相识匹配, 实现用语音交互的方式, 引导使用者到达指定地点。本系统的软
件及操作界面使用 MAT LA B软件平台设计, 经过测试, 本系统在复杂的室内环境下, 可以直观、 快捷地实现语音交
互方式下的地图导航功能, 语音识别率达到8 7. 7 5%。

关键词: 语音交互, 智能引导系统, 美尔倒谱系数, 动态时间规整算法, 迪杰斯特拉算法