25 September 2003 Segmentation of time-varying signals by using variable-amplitude Fourier series
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Proceedings Volume 5286, Third International Symposium on Multispectral Image Processing and Pattern Recognition; (2003) https://doi.org/10.1117/12.539883
Event: Third International Symposium on Multispectral Image Processing and Pattern Recognition, 2003, Beijing, China
Abstract
This paper proposes Variable Amplitude Fourier Series (VAFS). For a time-varying signal, the amplitude of VAFS vary as function of the time, which can be used as the tool of time-frequency localization. Based upon VAFS, Local Approximate Index(LAI) is proposed. LAI can be used to measure local maximal freuqency of signal. By using LAI, signal of time-varying can be segmented by frequently and time-invariant interval (TII) of signal can be obtained. Re-sampling of signal and speech segmentation can be effectively processed by using VAFS and LAI.
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Qinghu Chen, Qinghu Chen, Lilong Cai, Lilong Cai, } "Segmentation of time-varying signals by using variable-amplitude Fourier series", Proc. SPIE 5286, Third International Symposium on Multispectral Image Processing and Pattern Recognition, (25 September 2003); doi: 10.1117/12.539883; https://doi.org/10.1117/12.539883
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