摘要
文章针对数字信号处理课程课堂教学理论性强的特点,提出利用System View软件平台对重要知识点数字滤波器的设计进行辅助教学。在数字信号处理中,滤波器占有极其重要的地位,是所有通信系统中必不可少的部分。传统的滤波器的设计过程很复杂,计算工作量也比较大,而且滤波特性调整困难,影响了它的应用。文章利用System View的滤波器设计功能,完成IIR和FIR滤波器的设计,并对滤波器的幅频特性、相频特性等性能加以分析,通过仿真表明所设计的数字滤波器技术指标完全符合设计要求,而且实现了滤波器设计的简单化,具有实用价值。
According to the characteristics of being rather theoretical in the course Digital Signal Processing, this paper puts forward that System View software platform can be used to assist the teaching of digital filter design. In digital signal processing, filter occupies an extremely important position and is an essential part of all the communication systems. The design process of the traditional filter is very complex and the calculation is big. In addition, the adjustment of the filter characteristics is difficult, which affects its application. By using the filter design function of System View, the design of HR and FIR filter is finished. The performances of the filter such as amplitude-frequency characteristic and phase-frequency characteristic are analyzed. Through simulation, it shows that the technical data of the designed digital filter suit the design demands and the simplification of the design is achieved, which has practical values.
出处
《长沙通信职业技术学院学报》
2010年第1期6-11,共6页
Journal of Changsha Telecommunications and Technology Vocational College
