基于51单片机的语音存储与回放系统设计精要.doc

基于51单片机的语音存储与回放系统设计 Voice storage and playback system based on 51?microcontroller 摘　要 在当今的智能化仪器仪表和自动控制装置，添加语音功能可以提升友好的人机界面，方便用户操作。在许多情况下，它需要语音合成，语音识别，语音存储和回放技术和单片机在一起。 传统的模拟语音处理系统使存储和声音的再现，但效果不太好。在本文中，数字语音存储与回放系统采用了单片机89C51和数码语音芯片ISD2560 首先，我设计了这个电路系统的硬件，再其次是硬件电路书面记录，回放控制程序，最后，这个总结和展望的设计。 关键词：89C51单片机 ISD2560语音芯片 语音存储 语音回放 ABSTRACT In the area of intelligent instruments and automatic control equipments, the system with the phonetic function can greatly increase the friendliness of the man-machine interface, and is also convenient for users to operate. In many situations, designers need to integrate the phonetic synthesis, the phonetic recognition and the phonetic storage and playback technology with the SCM. The common analog-signal digitalize processing system can realize the function of phonetic storage and playback. But the effects are not very good. This dissertation designs the digital phonetic system composed of flash micro-controller STC89C51 and digital audio chip ISD2560. SCM is the control center of the system, it is mainly to achieve the following functions: the keystroke identification and the function selection; phonetic storage and playback by using the digital audio chip ISD2560. Firstly, this dissertation designs the hardware circuit of the system. And then compiles the control program of record and playback. At last, the summary and prospects of the design was presented. Key words: STC89C51 ISD2560 phonetic storage phonetic playback 目 录 摘　要 I ABSTRACT II 目 录 III 绪　论 1 第一章 整体系统设计 4 1.1 总体方案论证 4 1.2 器件选择 5 1.2.1 单片机的选择 5 1.2.2 语音芯片选择 6 1.3 ISD2560语音芯片 6 1.3.1 ISD2560的引脚功能 7 1.3.2 ISD2560的操作模式 9 1.3.3 ISD2560的 10 1.3.4 ISD2560的应用电路 10 1.3.5 电源电路 11 1.4集成功率放大器芯片LM386 12 1.4.1 LM386电子特性 12 1.4.2 LM386的引脚说明 13 第二章 系统硬件设计 14 2.1系统硬件电路总体设计 14 2.2 STC89C51的外围电路设计 14 2.2.1 晶振电路 14 2.2.2 复位电路设计 15 2.3 语音电路设计 15 2.4 功放电路设计 16 2.5按键部分电路 17 第三章 系统软件设计 19 3.1 主要变量说明 19 3.2 主程序