单片机语音录放模块课程设计分析.doc

《单片机设计》课程设计 题 目： 基于单片机的语音录放模块 专 业： 电气工程系 班 级： 本电信103班 姓 名： 杨韵沂 学号： 2010020243106 指导老师： 钟立华 小组成员： 黄志良 叶海心 杨韵沂 成 绩： 2013年6月 摘要 从20世纪开始，持续更新换代的电子科技产品的不断问世，加速了电子行业的发展，而数码技术的不断完善，更让电子科技产品走向多功能化和专业化。基于单片机的语音录放模块运用单片机的简便性和实用性，被广泛应用于各种语言警示装置、留言装置、高档玩具和电子礼品等方面，为人们的生活增添了多姿多彩的一笔。本次单片机实验的基于单片机的语音录放模块主要是实现一段声音的录放功能。它在设计上采用五个模块，分别是电源转换模块、控制电路模块、语音芯片模块、音频功模块和。其中电源转换模块采用LM7805和LM1117进行转换电压，分别产生5V和3.3V的电压。语音芯片模块采用ISD400408芯片，音频功效模块实现运放的功能是通过采用LM386来完成。其中，液晶显示采用的是1602显示，显示部分为：Recording begins，Playback begins。而，刚开机的显示是：voice recording system。 关键词： 电子科技产品；语音；简便；实用 Summary From the 20th century, continued upgrading of electronic technology products have been developed to accelerate the development of the electronics industry, and digital technology continues to improve, leaving electronic technology products to the multi-function and specialization. Microcontroller-based voice recording module using microcontroller simplicity and practicality, are widely used in a variety of languages ??warning device, a message unit, high-end toys and electronic gifts, etc., adding to peoples life colorful stroke. The single-chip microcontroller-based experiments voice recording module is to achieve a sound recording and playback functions. It is designed with five modules, namely, power conversion module, a control circuit module, voice chip module, audio effects module and speaker module. Including power conversion module using LM7805 and LM1117 to convert voltage 5V and 3.3V, respectively, the voltage generated. Voice chip modules ISD400408 chip op amp audio effects modules function is accomplished through the use of LM386. Among them, the LCD display is used in 1602 and the showing part is Recording begins, Playback begins. And, just getting the units display is voice recording system. Keyword: Electronic technology products; Voi