基于DSP的语音录播器设计

齐齐哈尔大学毕业设计（论文）齐齐哈尔大学毕业设计（论文）题目基于DSP的语音录播器设计学院通信与电子工程学院专业班级通信工程084班学生姓名云永祯指导老师朱恒军成绩齐齐哈尔大学毕业设计（论文）I摘要DSP理论和技术是目前电子技术和IT领域中的基本工程理论与核心技术。实际上，DSP技术已经深入到各个工业应用技术中，它已经成为21世纪初各种新技术的共同基础。语音处理是数字信号处理最活跃的研究方向之一，在IP电话和多媒体通信中得到广泛应用。和其他类型的处理器相比，DSP具有速度快、运算能力强等优点，使它在语音处理方面有显著优势。本文以TI公司的TMS320C5402芯片为核心构建最小系统，在此基础上进行功能扩展，设计一个基于DSP、语音编解码芯片和FLASH的语音录音与回放系统，阐述了系统硬件设计原理和过程。并在CCS2.0环境下编程，实现语音录音与回放功能。实验证明该系统具有电路连接简单，编程容易，整个系统具有较好的扩展能力和适应性。关键词：数字信号处理器；语音编解码芯片；闪存；语音录音和回放齐齐哈尔大学毕业设计（论文）IIAbstractAtpresenttheDSPtheoryandtechnologyarethebasicprojecttheoryandcoretechnologiesintheelectronictechnologyandITdomain.Infact,theDSPtechnologyhasalreadypenetratedintoeachindustrialapplicationtechnology,andithasalreadybecomethecommongroundofallkindsofnewtechnologiesatthebeginningofthe21stcentury.Speechprocessingisoneofthemostactiveresearchindigitalsignalprocessing,anditiswidelyusedintheIPtelephonyandmultimediacommunication.Comparedwithothertypesofprocessors,DSPhastheadvantagesofhighspeedandstrongcomputingcapacityetc,andthismakesithaveasignificantadvantageinspeechprocessing.ThisarticletakeTICorporation'sTMS320C5402chipasthecoretoconstructthesmallestsystem,expandingthefunctionbasedonthefoundation,designingarecordingandplayingspeechsystembasedonDSP、speechcodinganddecodingchipandFlash,InCCS2.0programmingenvironment,thepuperachievestherecordingandplayingfunction.Theexperimentresultsshowthissystemissimpleinthecircuitconnection,andiseasyinprogramming.Thewholesystemhasbtterextendedcapabilityandapplicability.Keywords：DSP；TLC320AD50；FLASH；TheRecordingandPlayingSpeechSystem齐齐哈尔大学毕业设计（论文）III目录摘要............................................................................................................................................................IAbstract........................................................................................................................................................II第1章绪论................................................................................................................................................11.1引言...............................................................................................................................................11.2数字语音录放系统的发展......................................................................................................11.3论文研究的意义........................................................................................................................21.4论文设计的内容........................................................................................................................2第2章TMS320C5402DSP芯片的基本结构和特性........................................................................32.1TMS320C5402的基本结构.......................................................................................................32.2存储器介绍.................................................................................................................................42.3TMS320C5402的总线结构.......................................................................................................62.4IEEE1149.1标准的逻辑扫描电路...................................................................................72.5本章小结.....................................................................................................................................7第3章最小系统硬件设计....................................................................................................................83.1最小系统模块硬件总体框图.................................................................................................83.2电源电路.....................................................................................................................................83.3复位电路.....................................................................................................................................93.4时钟电路...................................................................................................................................123.5JTAG仿真接口.........................................................................................................................133.6本章小结...................................................................................................................................13第4章语音录音与回放系统的硬件设计.....................................................................................144.1语音录音与回放系统的总体设计框图.............................................................................144.2语音输入模块接口电路........................................................................................................144.2.1前置放大.......................................................................................................................144.2.2反混叠滤波..................................................................................................................144.3语音编解码芯片TLC320AD50C模块.................................................................................154.4TMS320C5402与TLC320AD50C硬件接口设计...................................................