Time-Frequency Distribution Based on Local Frequency and EMD

摘要：

As for the limitation of traditional frequency, the concept of local frequency is proposed, which makes the physical meaning of frequency more clear. The wide adaptability of local frequency is also discussed. Moreover, a novel time-frequency analysis approach is presented based on local frequency and EMD. The time-frequency distributions of simulated signals are investigated by the new approach. Compared with the HHT time-frequency distribution, the results show that concept of local frequency is correct and the time-frequency analysis approach presented is effective.

作者: Shulin Liu Hui Wang Rui Ma Haifeng Zhao

作者单位: Department of Precision Mechanical Engineering, Shanghai University, Shanghai, China Storage, Transportation & Sales Sub-company, Daqing Oilfield Corp.Ltd., Daqing, China College of Mechanical Engineering, Daqing Petroleum Institute, Daqing, China

会议类型: 国际会议

会议名称: 2008 International Conference on Audio，Language and Image Processing(2008国际声音、语言、图像过程大会)

会议地点: 镇江

会议语种:英文

页码: 112-117

在线出版日期: 2008-07-07（万方平台首次上网日期，不代表论文的发表时间）