A DIRECT EVALUATION OF MONO-COMPONENTS BY INSTANTANEOUS FREQUENCY | |
Niu, Kaifu; Peng, Lizhong; Peng, Silong; KAIFU NIU | |
发表期刊 | INTERNATIONAL JOURNAL OF WAVELETS MULTIRESOLUTION AND INFORMATION PROCESSING |
2012-05-01 | |
卷号 | 10期号:3 |
文章类型 | Article |
摘要 | We present a new criterion based on instantaneous frequency (IF) to distinguish mono-components (MCs). We first notice that the "offset of local extremum" caused by low-frequency envelope is often significant on envelope extraction, which determines the calculation of IF for MCs. We estimate the upper and lower bounds of the offset for a general family of signals. Conducted by the offset estimation, we propose a direct and effective algorithm to calculate IF. Our algorithm, which is based on an empirical pursuit of knots and natural splines, provides an accurate estimation of the envelope and derives a well-behaved IF. A theoretical explanation for the good approximation of proposed envelope is also stated. Experiment results show the fast convergence of our algorithm, which leads to a reliable IF and local mean to provide a flexible criterion for MC classification. We emphasize that it is important to pursue a certain balance among different requirements to define MC depending on specific applications Read More: http://www.worldscientific.com/doi/abs/10.1142/S0219691312500282 |
关键词 | Mono-component Signal Instantaneous Frequency Envelope Offset Of Local Extremum Weak Intrinsic Mode Function read More: Http://www.worldscientific.com/doi/abs/10.1142/s0219691312500282 |
WOS标题词 | Science & Technology ; Technology ; Physical Sciences |
关键词[WOS] | EMPIRICAL MODE DECOMPOSITION ; SIGNAL DECOMPOSITION |
收录类别 | SCI |
语种 | 英语 |
WOS研究方向 | Computer Science ; Mathematics |
WOS类目 | Computer Science, Software Engineering ; Mathematics, Interdisciplinary Applications |
WOS记录号 | WOS:000304675400008 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ia.ac.cn/handle/173211/2912 |
专题 | 智能制造技术与系统研究中心_多维数据分析 |
通讯作者 | KAIFU NIU |
推荐引用方式 GB/T 7714 | Niu, Kaifu,Peng, Lizhong,Peng, Silong,et al. A DIRECT EVALUATION OF MONO-COMPONENTS BY INSTANTANEOUS FREQUENCY[J]. INTERNATIONAL JOURNAL OF WAVELETS MULTIRESOLUTION AND INFORMATION PROCESSING,2012,10(3). |
APA | Niu, Kaifu,Peng, Lizhong,Peng, Silong,&KAIFU NIU.(2012).A DIRECT EVALUATION OF MONO-COMPONENTS BY INSTANTANEOUS FREQUENCY.INTERNATIONAL JOURNAL OF WAVELETS MULTIRESOLUTION AND INFORMATION PROCESSING,10(3). |
MLA | Niu, Kaifu,et al."A DIRECT EVALUATION OF MONO-COMPONENTS BY INSTANTANEOUS FREQUENCY".INTERNATIONAL JOURNAL OF WAVELETS MULTIRESOLUTION AND INFORMATION PROCESSING 10.3(2012). |
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