2．系统构成与原理
　　R88D-UP08V语音识别主要包括两个阶段：训练阶段和识别阶段。在训练或识别过程中，都必须对输入语音进行预处理和特征提取。训练阶段通过用户输入的若干次训练语音，经过预处理和特征提取后得到特征参数，最后通过特征参数建模，进而建立训练语音的参考模型库。而识别阶段是将输入语音的特征矢量参数和参考模型库中的参考模型进行相似性度量，然后把相似度最高的输入特征矢量作为识别结果输出，从而达到语音识别目的，如图1所示。

　　R88D-UP08V语音识别技术可分为：特定人识别和非特定人识别两种。特定人识别是指需要对待识别人的语音进行采集训练，识别对象为专门的人；非特定人识别是指识别对象为大多数用户，一般要采集多个人的语音进行录音、训练和学习，从而达到较高的识别率。
　　R88D-UP08V在实际应用中，现代技术开发嵌入式语音识别有两种实现方式：调入嵌入式语音开发包和外扩语音识别芯片。本文的语音识别系统方案是以嵌入式处理器S3C2440为核心，外扩非特定人语音识别芯片LD3320，并将超声波测距模块和云台相结合作为系统的机械执行机构。系统测量过程如下：首先根据语音指令控制两自由度云台的位姿，使超声波探测器指向特定方向，然后开启超声波探测器，测量出前方障碍物距离，最后将测量结果转化为可以播放的二进制数据流，通过LD3320的播放功能完成数据的播放。

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 R88D-UP08V
R88D-UP12HA AC200V 400W
R88D-UP12LA AC100V 200W
R88D-UP12V
R88D-UP15LA AC100V 300W
R88D-UP20HA AC200V 750W
R88D-UT120H AC200V 5.0KW
R88D-UT24H AC200V 1.0KW
R88D-UT40H AC200V 1.5KW
R88D-UT40V
R88D-UT60V
R88D-UT80H AC200V 3.0KW
R88D-UT80V
R88D-WT01H
R88D-WT01HL
R88D-WT02H
R88D-WT02HL
R88D-WT04H
R88D-WT05H
R88D-WT08H
R88D-WT10H
R88D-WT150H
R88D-WT15H
R88D-WT20H
R88D-WT30H
R88D-WT50H
R88D-WT60H
R88D-WT75H
R88D-WTA3H
R88D-WTA3HL
R88D-WTA5H
R88D-WTA5HL
R88M-H05030 AC50W
R88M-H10030 AC100W
R88M-H10030-B AC100W
R88M-H1K130 AC1100W
R88M-H1K130-B AC1100W
R88M-H20030 AC200W
R88M-H20030-B AC200W
R88M-H20030-G25BJS1
R88M-H30030 AC300W
R88M-H30030-B AC300W
R88M-H50030-B AC500W
R88M-H75030 AC750W
R88M-H75030-B AC750W
R88M-U03030HA
R88M-U03030HA-B
R88M-U03030HA-BS1
R88M-U03030HA-S1
R88M-U03030LA
R88M-U05030HA
R88M-U05030HA-B

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