摘 要随着语音处理技术在工业、交通、通信等不断应用和消费类电子不断繁荣，人们对具有数码录音与播放功能的产品的需求也在不断的增加。为了更好的满足人们日常生活、工作，选用凌阳单片机为核心，通过麦克风接收语音信号，使用存储器来存储语音信息从而实现录音和播放功能。基于该功能的系统应用于录音较长的场合。如自录语音提示、温度检测储存播放系统等方案。本次设计的硬件电路主要包括 MIC 录音电路、DAC 放音电路、按键电路、复位与时钟电路、外部 W29C040 储存器扩展电路组成。把语音信号经过搭建电容、电阻，送入前置放大器和内部集成的自动增益（AGC）处理，作为录音部分；而 DAC 放音部分，经过语音集成放大器 SPY0030A 放大，再接上扬声器，实现了语音的录放功能。芯片体积小、集成度高、易扩展、中断处理能力强等特点。【关键词】凌阳单片机 W29C040 储存器 数码录音与播放ABSTRACTWith the increasing prosperity of the consumers’ electronics and the voice processing technology in the continuous application of the industrial, transportation, communications ,the demand of products which are having the function of digital recording and playback is constantly increasing. In order to better satisfy people’s daily life and work, I choose Sunplus MCU as the core, using a microphone to receive voice signals and use a memory to store the voice information recording and playback. The system based on the feature applies in the longer recording occasions. such as the self-recording voice prompts, the temperature sensing store playback systems or other programs.The design of the hardware circuit includes a MIC recording circuit, DAC playback circuit, key circuit, the reset and clock circuit, the external W29C040 storage expansion circuit. The voice signal passing through the build of capacitors, resistors, processing in the preamplifier and the internal integration of the automatic gain (AGC) uses as the recording part; And DAC playback part, goes through...
