毕业设计（论文）-基于单片机的录音笔设计与实现.doc

毕业设计（论文）-基于单片机的录音笔设计与实现.doc录音笔的设计与实现
摘要

随着电子技术的飞速发展,数码录音笔已得到了越来越多的人得青睐,论文通过对多种录音笔的设计方案进行了比较和分析,选定凌阳单片机设计了一个数字录音笔。
论文首先介绍了设计方案的选择,介绍了凌阳单片机的集成开发环境。接着进行了系统的硬件设计,包括音频输入输出电路的设计、存储电路的设计、按键控制电路的设计、液晶显示电路的设计等,设计中采用了凌阳的功放芯片SPY0030,利用了单片机其串行接口SIO实现上位机与下位机的通讯,利用UART的RS232接口与PC机232接口进行连接,并设置了8位键盘和LCD显示的人机界面。然后分模块进行了软件设计,包括主程序模块、语音信号的采集模块、键盘扫描模块、语音信号存储模块的设计等,进行了程序流程的设计,编写了程序代码。最后使用IDE进行了仿真调试,验证了系统设计的正确性。系统实现了语音数据的录制、播放、暂停、循环播放、重复播放、选择上一段、选择下一段以及与PC机进行数据传输等功能,设计具有一定的应用价值。
关键词:单片机,录音,放音,电路设计,软件实现

ABSTRACT
As the swift development of the electronic technology, the digital voice editor has e more and more favored nowadays. parison and analysis to various design proposals of the digital voice editor, this thesis presents the designing process of a digital voice editor, using Lingyang single-chip puter.
First of all, we give an introduction for the selection of the designing proposal, and the IDE (integrated development environment) of Lingyang single-chip puter. Secondly, systematical hardware designing is carried out, including the design of the output circuit, memory circuit, button-control circuit, LCD circuit and so on. In the designing, we adopt the Lingyang amplifier chip SPY0030, apply the single-chip puter’s SIO (serial interface) to realize munication between the puter and puter, connect the UART’s RS232 interface with the PC’s 232 interface, and set the eight buttons as well as the puter interface. Then we have a modular software design, consisting of the module of the main program, the acquisition module, key scanning module and memory module for the voice signal. Meanwhile, we plish the design of the program flow and write the source code of the program. In the integrated development environment (IDE), the validity of the system’s designing has been verified through simulate debugging. The system can fulfill the functions presented on the buttons such as “record”, “play”, “pause”, “loop play”, “replay”, “last recorded file play”, “next recorded file play” and “data transmission with P