嵌入式语音识别系统的研究和实现 - 方敏(2)

识别系统在多种嵌入式平台上的实现和评估结果,论证了非特定人语音识别系统在嵌入式平台上实现的可

行性及其对硬件的最低配置要求,在技术层次上分析了目前实现高性能语音识别SOC的主要问题和困难,并

指出了今后相关的研究方向。

关键词:计算机应用;中文信息处理;嵌入式平台;非特定人语音识别;语音识别SOC 中图分类号:TP391.4 文献标识码:A

Research and Realization of Embedded Speech Recognition System FANG Min,PUJian-tao,LI Cheng-rong,TAI Xian-qing

(Hi-tech Innovation Center,Institute of Automation,Chinese Acadamy of Science Beijing 100080,China)

Abstract:Proposed in this paperis a novel speaker-independent speech recognition system,which is command-variable and

suitable for realization based on embedded platform.Compared with traditional speaker-independent speech recognition sys-

tem based on PC,our system is featured small storage and computation cost.The system is evaluated on several embedded

platformsthat are specially designed.According to the result of the evaluation,the feasibility of speaker-independent

speech recognition system based on embedded platform is proved and the least requirement for the hardware is given.Then

we analyzed the main problems and difficulties in the development of high performance speech recognition SOC(System On

a Chip)from the point of technology,and pointed out some future works. Key words:computer application;Chinese information processing;embedded platform;speaker-independent speech recog- nition;speech recognition SOC 1 前言

随着计算机软硬件技术、半导体技术、电子技术、通讯技术和网络技术等的飞速发展,人类已

经进入后PC时代。这个时代一个典型的特征就是:各种新型智能化的设备日益广泛地走进人