单片机的语音合成电话自动应答毕业设计（论文)

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1、摘要本设计是基于单片机的语音合成电话自动应答系统,利用AT89C51控制外围电路和语音芯片ISD4004，实现振铃检测、自动摘挂机、忙音检测、自动录放音等功能。可以直接通过按键，控制录放音同时使用音频电压器把语音信号耦合到电话线上去或者录制到语音芯片中。语音芯片采用ISD4004，它与单片机的连接方便使得电路简单,连线简洁,结构紧凑；并能够方便的存储和读取语音信息。本设计使用方便灵活，全面实现了题目的要求。关键字单片机ISD4004芯片录放音IAbstractThedesignisbasedonSCM’svoiceresponsesyst

2、emofautomatictelephone,AT89C51useofexternalcontrolandvoicecircuitchipISD4004,achievingringingdetection,automaticpickhangup,abusytonedetection,automaticaudiorecorders,tocompletebasedonSCMAutomatictelephonevoiceresponsesystemofthedesignandimplementationfunctions.Canbedirect

3、lythroughthekeystocontrolthesoundrecording.Theuseofaudio-voltagecouplingofthevoicesignaltothetelephoneoronlinetorecordthevoicechip.VoicechipsusedISD4004,theMCUandconnectitmakesforasimplecircuit,theconnectionissimpleandcompact,andeasytostoreandreadthevoicemessage.Thisuser-

4、friendlydesignflexibility,thefullrealizationofthesubject’srequest.KeywordSingleChipMicyocoISD4004-chipRecordersII目录摘要.....................................................................错误！未定义书签。ABSTRACT........................................................错误！未定义书签。第1章绪

5、论....................................................错误！未定义书签。1.1电话录音的现状及发展方向....................................错误！未定义书签。1.2系统设计理论与总体方案........................................错误！未定义书签。第2章单片机及硬件电路设计....................错误！未定义书签。2.1中心控制器.....................................

6、...........................错误！未定义书签。2.1.1中心控制器AT89C51.......................................错误！未定义书签。2.1.2管脚说明...........................................................错误！未定义书签。2.1.3单片机最小系统...............................................错误！未定义书签。2.2外围硬件电路.................

7、...........................................错误！未定义书签。2.2.1电话模拟摘挂机电路.......................................错误！未定义书签。2.2.2光电耦合器.......................................................错误！未定义书签。2.2.3振铃检测电路...................................................错误！未定义书签。2.2.4双音多频发送接收

8、器MT8888........................错误！未定义书签。2.2.5忙音检测电路设计...........................................