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1 《 單片機(jī)設(shè)計 》課程設(shè)計 題 目: 基于單片機(jī)的語音錄放模塊 專 業(yè): 電氣工程系 班 級: 本電信 103 班 姓 名: 楊韻沂 學(xué)號: 2021020243106 指導(dǎo)老師: 鐘立華 小組成員: 黃志良 葉海心 楊韻沂 成 績: 2021 年 6 月 2 摘要 從 20 世紀(jì)開始,持續(xù)更新?lián)Q代的電子科技產(chǎn)品的不斷問世,加速了電子行業(yè)的發(fā)展,而數(shù)碼技術(shù)的不斷完善,更讓電子科技產(chǎn)品走向多功能化和專業(yè)化?;趩纹瑱C(jī)的語音錄放模塊運(yùn)用單片機(jī)的簡便性和實用性,被廣泛應(yīng)用于各種語言警示裝置、留言裝置、高檔玩具和電子禮品等方面,為人們的生活增添了多姿多彩的一筆。本次單片機(jī)實驗的基于單片機(jī)的語音錄放模塊主要是實現(xiàn)一段聲音的錄放功能。它在設(shè)計上采用五個模塊,分別是電源轉(zhuǎn)換模塊、控制電路模塊、語音芯 片模塊、音頻功 放 模塊和 液晶顯示模塊 。其中電源轉(zhuǎn)換模塊采用 LM7805和 LM1117 進(jìn)行轉(zhuǎn)換電壓,分別產(chǎn)生 5V 和 的電壓。語音芯片模塊采用ISD400408 芯片,音頻功效模塊實現(xiàn)運(yùn)放的功能是通過采用 LM386 來完成。其中,液晶顯示采用的是 1602 顯示,顯示部分為: Recording begins, Playback begins。而,剛開機(jī)的顯示是: voice recording system。 關(guān)鍵詞: 電子科技產(chǎn)品;語音;簡便;實用 3 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 multifunction and specialization. Microcontrollerbased voice recording module using microcontroller simplicity and practicality, are widely used in a variety of languages warning device, a message unit, highend toys and electronic gifts, etc., adding to people39。s life colorful stroke. The singlechip microcontrollerbased 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 , respectively, the voltage generated. Voice chip modules ISD400408 chip op amp audio effects module39。s function is acplished 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 unit39。s display is voice recording system. Keyword: Electronic technology products。 Voice。 Simplicity 。Practicality 4 目錄 一、 引言 ......