基于单片机数码录音与播放系统的设计_精品.doc

基于单片机数码录音与播放系统的设计 摘 要 本次毕业论文设计主要是利用凌阳必威体育精装版开发的16位单片机来制作一个数码录音和播放系统。要求能最少实现4分钟的语音录放且音质清晰。 SPCE061A是凌阳科技研发生产的性价比很高的一款十六位单片机，使用它可以非常方便灵活的实现语音的录放系统，该芯片拥有8路10位精度的ADC，其中一路为音频转换通道，并且内置有自动增益电路。这为实现语音录入提供了方便的硬件条件。2路10位精度的DAC，只需要外接功放（SPY0030A）即可完成语音的播放。另外凌阳十六位单片机具有易学易用的效率较高的一套指令系统和集成开发环境。在此环境中，支持标准C语言，可以实现C语言与凌阳汇编语言的互相调用，并且，提供了语音录放的库函数，只要了解库函数的使用，就会很容易完成语音录放，这些都为软件开发提供了方便的条件。 W29C040是台湾华邦公司生产的4M位的FLASH存储芯片，利用它存储凌阳格式的语音资源，可以长达4分钟语音录放[12]。该系统可以广泛应用于需求的录音较长的场合。如录音笔、自录语音提示等应用方案。本系统提供W29C040相关的读写模块，此模块也可应用于W29C040同系列的相关FLASH芯片中。 关键词：SPCE061AW29C040;录音/播放;FLASH The Design of Digital Recording and Playback System Based on Single Chip Microprocessor Abstract The design of the thesis is main using the latest 16-bit Sunplus microcontroller to create a digital recording and playback system. Required to achieve at least 4 minutes of audio playback and clear sound. The sunplus SPCE061A is cost-effective production of high R D a 16 microcontroller, which can be very easy to use and flexible voice recording and playback system, the chip has the 10-bit precision ADC of eight, which transform the way for the audio channel, and built-in automatic gain circuit. This provides a convenient voice entry hardware conditions. The 10- bit precision DAC of two, only need an external power amplifier (SPY0030A) to complete the voice of the play. Also Sunplus 16 MCU with easy-efficient instruction set and integrated development environment. In this environment, support the standard C language, can achieve C language and assembly language Sunplus call each other and provide a voice record of the library functions, as long as the understanding of the use of library functions, you can easily complete voice recorders, which are software development provides a convenient conditions. The W29C040 memory which is manufactured by Taiwans Winbond is 4M bits FLASH memory chip, using its storage format Sunplus voice resources can be up to 4 minutes voice recorders. The system can be widely used in demand for recordi