1、 1 单片机设计单片机设计课程设计课程设计 题题 目:目: 基于单片机的语音录放模块 专专 业:业: 电气工程系 班班 级:级: 本电信 103 班 姓姓 名:名: 学号:学号: 指导老师:指导老师: 小组成员:小组成员: 成成 绩:绩: 2 摘 要摘 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
2、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、音频功放模块和液晶显示模块。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:关键词: 电子科技产品;语音;简便;实用 3 Su
3、mmary 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. Microcontrol
4、ler-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 reco
5、rding 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 5
6、V 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; Voice; Simplicity ;Pra