基于 51 单片机数字语音存放和回放系统设计 摘 要 该文实行 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很多功效。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。控制模块关键是 51 单片机口线功效，经过对按键识别来控制语音录放模块工作模式；语音录放模块能实现对声音处理、存放和复原功效；功放模块能对复原好音频信号加以放大，使声音愈加清楚明亮。整个设计围绕以下三方面进行讨论：总体方案设计、硬件电路设计、软件设计。 关键词：AT89C51 单片机,语音存放,语音回放 DESIGN OF VOICE RECORDING AND PLAYBACK SYSTEM BASED ON AT89C51 ABSTRACT The propose of this paper is to design a real-time speech recording system with AT89C51 microcontroller and ISD2560 voice chip,it can realize the recording time of 60s, sound recording and playback controlled by button, can reset and voice can adjust. The system includes three modules:single chip microcomputer control module, voice recording module, power amplifier module. Core of control module is 51SCM mouth line function, through the identification of key to control the voice recording module work model;voice recording module can realize voice processing,storage and playback;power amplifier module for audio signal amplified, to make the sound more clear and bright.The whole design around the following three aspects: the overall design, hardware circuit design, and the design of software. Key Words:AT89C51，phonetic storage ，phonetic playback 目录摘 要....................................................................................................................................................IABSTRACT......................................................................................................................................II目录................................................................................
