第1页共31页编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第1页共31页更多论文请加QQ1634189238492186520摘要本论文先分别论述了手机用麦克、耳机、蓝牙送话、受话、录音的原理，还论述了播放MP3、MIDI音、录音的原理，先从大体上分析了手机的音频原理。接着以MOTO的经典机型E680为例，详细分析了手机的音频电路原理。最后是关于手机音频的维修分析。通过这次论文，在分析原理的基础上指导维修。关键字：语音总线PCAP集成芯片龙珠（主CPU）NEP（从CPU）AbstractThispaperfirstdescribesrespectivelyphonewithMike,headphone,Bluetoothsent,thesubject,recordingtheprinciple,alsooutlinedtheplayMP3,MIDIMusic,therecordingofprinciple,withthegeneralonthephoneaudioprinciple.MOTOthentotheclassicmodelsE680forexample,gaveadetailedaccountofthephoneaudiocircuit.Finally,withregardtothemaintenanceofcellphoneaudioanalysis.Keywords:SpeechPCAPICBus第2页共31页第1页共31页编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第2页共31页目录第一章绪论.............................................................................................................................................................3第二章手机音频原理论述......................................................................................................................................42．1主MIC（麦克）的打电话原理.......................................................................................................................42．2主听筒接电话原理...........................................................................................................................................52．3普通录音原理...................................................................................................................................................52．4播放普通录音原理...........................................................................................................................................62．5耳机送话原理...................................................................................................................................................62．6耳机受话原理..................................................................................................................................................72．7蓝牙打电话原理...............................................................................................................................................72．8蓝牙接电话原理..............................................................................................................................................82．9播放MP3原理.................................................................................................................................................82．10免提接电话原理.............................................................................................................................................92．11播放MIDI音原理..........................................................................................................................................92．12收音机使用原理.............................................................................................................................................92．13E680音频原理总结....................................................................................................................................10第三章音频电路...
