摘要
为了对S变换的不同实现方法进行比较,在MatLab环境下采用数值计算实验的方法,展现了数值实现S变换的不同方法中存在的误差及滤波效果的区别,为S变换这一工具的合理应用提供了有益的参考.研究表明,频率S变换(fST)与频率反S变换(fIST)结合,时间S变换(tST)与时间反S变换(tIST)结合,是2种可在实际中使用的方法,它们各有优势与不足.
In order to compare different numerical methods of S transform, this paper illustrates errors and filtering effects of different procedures via computing experiments under MatLab environment, provides useful references. The research showed, frequency S transform in conjunction with frequency inverse S transform and time S transform in conjunction with time inverse S transform are two practical methods, each of them has its advantages and disadvantages.
出处
《湖南文理学院学报（自然科学版）》
CAS
2010年第3期16-19,共4页
Journal of Hunan University of Arts and Science(Science and Technology)
基金
甘肃省教育厅科研项目(0908B-1)
关键词
S变换
时-频分析
滤波器
重建误差
S transform
time-frequency analysis
filter
reconstruction error
