一种基于APR9600语音芯片并应用74LS138进行语音编码的语音录放系统.doc

毕业设计(论文)
题目: 语音录放系统
英文题 Pronunciation Recording and Sending Out System

学生姓名
专业自动化
班级
指导教师
二零零六年六月
摘要
随着信息多媒体信息的急剧增长,对信息处理和有效的存储成为了必要的手段。而对语音信息的存储,也有越来越多的需求。智能语音录放系统以实用性、方便性等性能得到人们的关注,此类设备广泛的应用于通信、交通、航空等领域,可以说此系统已经遍及了人们日常生活、工作中。语音录放的新型智能系统的应用,有效提高了人们的生活、工作、娱乐的便捷性、效率性和实用性。语音数字化纪录与模拟信号羁勒相比具有的高可靠性,利用看见的高有效性的方便性等优点,所以应用数字录放系统已经成为了趋势。
此系统大多都是采用了单片机控制一个语音芯片,再接一个FLASH存储器的结构。本文介绍了一种基于APR9600语音芯片并应用74LS138进行语音编码的语音录放系统,给出了实现的方案,并对相应的功能模块、电子器件的结构、工作原理作分析和说明。提出了对语音录放系统的要求,同时描述了语音录放系统的工作流程,并编写了相应的系统工作程序。
为了提高系统的可行性和灵活性,采用了台湾公司退出的APR9600语音录放芯片为核心部件,配合A/D电路、D/A电路、控制电路和接口电路,实现录音、放音等功能,因此本文所提出的语音录放系统具有较高的应用价值。
关键字
APR9600语音芯片;8051控制芯片;语音录放程序
Abstract
With the rapid growth of the multimedia information of information , have e essential means to information processing and effective memory . And to the memory of pronunciation information, there are more and more demands. Intellectual pronunciation record , show system get concern of people with practicability , convenience performance, this kind of one that had an extensive equipment was applied to fields such munication , traffic , aviation ,etc., we can say this system has already been spread all over in people's daily life and work. Pronunciation record new application of intelligence system that show, improve people's life , convenient , efficiency and practicability worked , amused effectively. Pronunciation digitization note down with analog signal bridle tying high dependability had pare tight, utilize high convenience of validity that see advantage, so Applied Digital record , show system e the trend.
This system has mostly all adopted the one-puter to control a pronunciation chip, connect another structure of FLASH memory . This text introduce one on the basis of APR9600 pronunciation chip and employ 74LS138 carry on pronunciation pronunciation of code record the system of showing, provide scheme that realize , make analysis and prove to corresponding function module , structure , operation principle of elec