数字信号处理“听音识曲系统”综合实验设计

The Comprehensive Experiment Design of Music Recognition in Digital Signal Processing

针对数字信号处理实验环节中验证性实验偏多的问题,设计了"听音识曲系统"综合性实验,以更好地提高学生理论联系实际,解决复杂工程问题的能力。"听音识曲系统"实验与日常生活相关,演示效果好,学生实验热情高。实验内容涵盖信号频谱分析、窗函数使用、数字滤波器设计、多速率信号处理等数字信号处理课程主要内容,实验综合性强。学生在掌握课程相关知识的基础上,还需要查阅相关资料才能完成系统的设计与实现,实验扩展性好。实践表明,通过该综合实验学生加深了对理论知识的理解,提高了学习兴趣以及分析解决工程问题的能力。

In digital signal processing course,there are many verification experiments.To solve this problem,the comprehensiveexperiment of"music recognizing system"is designed.It can better improve students’ability of combining theory with practice and solving complex engineering problems.The experiment of"music recognizing system"is related to daily life and with good demonstration effect,which make students high enthusiasm.The experimental contents cover the main contents of digital signal processing course,such as signal spectrum analysis,window function usage,digital filter design,and multi-rate signal processing,leading to the experiment comprehensiveness.On the basis of mastering the relevant knowledge of the course,students also need to consult relevant reference to complete system design and implementation,leading to the experiment good expansibility.The practice shows that students deepen their understanding of theoretical knowledge,improve their interest in learning and their ability to analyze and solve engineering problems through this experiment.