[键入文字]基于51单片机的数字语音存储与回放系统设计摘要该文采用AT89C51单片机和ISD2560语音芯片设计一款实时语音录放系统，能实现录音时间达60s、录放音受按键控制、可复位且音量可调等诸多功能。整个系统共有三大模块：单片机控制模块、语音录放模块、功放模块。控制模块核心是51单片机的口线功能，通过对按键的识别来控制语音录放模块的工作模式；语音录放模块能实现对声音的处理、存储以及复原的功能；功放模块能对复原好的音频信号加以放大，使声音更加清晰明亮。整个设计围绕以下三方面进行研究：总体方案设计、硬件电路设计、软件设计。关键词：AT89C51单片机,语音存储,语音回放DESIGNOFVOICERECORDINGANDPLAYBACKSYSTEMBASEDONAT89C51ABSTRACTTheproposeofthispaperistodesignareal-timespeechrecordingI[键入文字]systemwithAT89C51microcontrollerandISD2560voicechip,itcanrealizetherecordingtimeof60s,soundrecordingandplaybackcontrolledbybutton,canresetandvoicecanadjust.Thesystemincludesthreemodules:singlechipmicrocomputercontrolmodule,voicerecordingmodule,poweramplifiermodule.Coreofcontrolmoduleis51SCMmouthlinefunction,throughtheidentificationofkeytocontrolthevoicerecordingmoduleworkmodel;voicerecordingmodulecanrealizevoiceprocessing,storageandplayback;poweramplifiermoduleforaudiosignalamplified,tomakethesoundmoreclearandbright.Thewholedesignaroundthefollowingthreeaspects:theoveralldesign,hardwarecircuitdesign,andthedesignofsoftware.KeyWords:AT89C51，phoneticstorage，phoneticplaybackII[键入文字]目录摘要....................................................................................................................................................IABSTRACT......................................................................................................................................II目录..................................................................................................................................................III第1章绪论........................................................................................................................................11.1课题研究背景.........................................................................................................................11.2国内外研究现状.....................................................................................................................21.3语音存储技术的发展前景.....................................................................................................21.4设计任务与要求.....................................................................................................................3第2章总体方案设计.........................................................................................................................42.1总体方案论证...........................................................................................................................42.2器件选择...................................................................................................................................52.2.1单片机的选择....................................................................................................................52.2.2语音芯片选择....................................................................................................................62.2.3功放选择............................................................................................................................62.3...
