实验技术与管理
實驗技術與管理
실험기술여관리
Experimental Technology and Management
2015年
11期
81-85,90
,共6页
周立青%占伟杰%田震%项进喜
週立青%佔偉傑%田震%項進喜
주립청%점위걸%전진%항진희
电子综合实验%音频分析仪%快速傅里叶变换%现场可编程门阵列
電子綜閤實驗%音頻分析儀%快速傅裏葉變換%現場可編程門陣列
전자종합실험%음빈분석의%쾌속부리협변환%현장가편정문진렬
integrated electronic experiment%audio signal analyzer%FFT%FPGA
基于开展跨课程电子综合实验教学的思路,设计了音频信号分析仪综合型实验项目。该实验项目基于 FPGA 以及 NIOS II 软核处理器,采用快速傅里叶变换方法实现音频信号频谱的测量。该系统由前置可控增益放大器、抗混叠滤波器、有效值检测、测频以及模数转换器等主要电路模块组成,综合应用了电路技术、微处理器技术、数字信号处理以及控制原理等相关课程内容,开展了跨课程知识综合设计的尝试,对提升学生知识综合、系统设计能力具有直接效果,同时也为后续研究性工作提供基础,具有非常突出的综合性、创新性和延续性。
基于開展跨課程電子綜閤實驗教學的思路,設計瞭音頻信號分析儀綜閤型實驗項目。該實驗項目基于 FPGA 以及 NIOS II 軟覈處理器,採用快速傅裏葉變換方法實現音頻信號頻譜的測量。該繫統由前置可控增益放大器、抗混疊濾波器、有效值檢測、測頻以及模數轉換器等主要電路模塊組成,綜閤應用瞭電路技術、微處理器技術、數字信號處理以及控製原理等相關課程內容,開展瞭跨課程知識綜閤設計的嘗試,對提升學生知識綜閤、繫統設計能力具有直接效果,同時也為後續研究性工作提供基礎,具有非常突齣的綜閤性、創新性和延續性。
기우개전과과정전자종합실험교학적사로,설계료음빈신호분석의종합형실험항목。해실험항목기우 FPGA 이급 NIOS II 연핵처리기,채용쾌속부리협변환방법실현음빈신호빈보적측량。해계통유전치가공증익방대기、항혼첩려파기、유효치검측、측빈이급모수전환기등주요전로모괴조성,종합응용료전로기술、미처리기기술、수자신호처리이급공제원리등상관과정내용,개전료과과정지식종합설계적상시,대제승학생지식종합、계통설계능력구유직접효과,동시야위후속연구성공작제공기출,구유비상돌출적종합성、창신성화연속성。
An audio signal analyzer is designed as a demonstration comprehensive teaching project for the inter-curriculum integrated electronic system design.The Fast Fourier Transform (FFT)algorithm implemented in FPGA and NIOSII is adopted to measure the spectrum of audio signal.The introduced analyzer mainly consists of forefront variable-gain amplifier,anti-aliasing filter,true RMS detection,frequency measurement and A/D converter. Furthermore, the related knowledge from several curriculums including Electronic Circuit Technology,Microprocessor Technology,Digital Signal Processing and Control Theory are comprehensively utilized to conduct the tentative attempt for integrated design,which is directly beneficial to enhancing the ability to design the synthesized system with inter-curriculum knowledge and give rise to further study work. Consequently,the introduced teaching project has been proved to be of remarkable comprehensiveness, innovation and continuity.