基于语音处理技术及DTMF解码技术的远程控制

电话远程控制不需进行专门的布线，不占用无线电频率资源，还可避免电磁污染。通过基于语音处理技术及DTMF解码技术的远程控制系统，运用语音识别技术，以及语音命令通过电话网络来控制家用电器的开与关，从而实现智能住宅中电器远程可控化。该系统通过嵌入式的智能语音提示，优秀的状态查询功能和密码控制系统，可使操作者根据各种提示音及时了解受控对象的有关信息。实验结果显示，系统可实现通过发出语音命令用电话远程控制多个家电，用户可以查询家电状态，提供密码功能，只有输入正确的密码才能控制家电，从而提高了安全性。

Application of sound processing technology and DTMF decoding technology in long-distance control

Long-distance control of telephone does not require special wires distribution and does not take up wireless frequency resources. Electromagnetic pollution can thus be avoided. The designing of a system of long-distance control based on sound processing technology and DTMF decoding technology is presented in this paper. By using sound commands of sound recognition technology, this system realizes its control of household electrical appliances through telephone networks and so realizes the intelligently control of them in residence. The embedded and intelligent sound indication, its outstanding inquiry function of condition and its code control system enable the operators to timely obtain the relative information of the controlled objects through indicated sounds. Our experiment results show that the system can use telephone to control ,nany household electrical appliances in long distance through uttering sound commands and provide the code safeguard function. Only through inputting the correct password to control them can users enquire the condition of household electrical appliances. System security can thus be improved.