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J. Cent. South Univ. Technol. (2011) 18: 1121-1127 DOI: 10.1007/s11771-011-0812-5 A speech enhancement algorithm to reduce noise and compensate for partial masking effect JEON Yu-yong1, LEE... as 3.2 dB in average than that of the noise reduction algorithm. Key words: speech enhancement; noise reduction; psychoacoustic property; human hearing property 1 Introduction One......
)Abstract:Image enhancement technology plays a very important role to improve image quality in image processing. By enhancing some information and restraining other information selectively, it can improve image visual effect. The objective of this work is to implement the image enhancement to gray scale images using different techniques. After the fundamental methods of image enhancement processing......
ARTICLE J. Cent. South Univ. (2019) 26: 1089-1098 DOI: https://doi.org/10.1007/s11771-019-4073-z Numerical analysis on forced convection enhancement in an annulus using porous ribs and nanoparticle... transfer enhances, the pressure drop increment is so considerable that performance number (the ratio of heat transfer enhancement pressure increment, PN) is less than unity for all porous rib heights......
Self-polymerization of Eu(TTA)3AA in rubber and their fluorescence effect姚璐1,2,温世鹏1,3,2,段雪1,胡晓丹4,车明生4,景文峰4,刘浩亮5,刘力1,21. State Key Laboratory of Chemical Resource Engineering,College of Materials... fluorescence composites.The neat Eu(TTA)3AA complex showed the ability of self-polymerization when it was heated at 145°C.It was found that the fluorescence intensity of the neat Eu(TTA)3AA decreased......
Self-polymerization of Eu(TTA)3AA in rubber and their fluorescence effect姚璐1,2,温世鹏1,3,2,段雪1,胡晓丹4,车明生4,景文峰4,刘浩亮5,刘力1,21. State Key Laboratory of Chemical Resource Engineering,College of Materials... fluorescence composites.The neat Eu(TTA)3AA complex showed the ability of self-polymerization when it was heated at 145°C.It was found that the fluorescence intensity of the neat Eu(TTA)3AA decreased......
and fluorescent microscope, CdSe was identified as cubical nanocrystal with an even size of 4 nm, and enjoys obvious quantum size effect and strong fluorescence. Compared with pure quantum dots, CdSe quantum dots coated with polylactide are characterized with large size, typical nuclear shell structure and stronger fluorescence. Key words: quantum dots; polylactide; coating; fluorescence  ......
diffractometry(XRD), field emission scanning electron microscopy(FE-SEM) and fluorescence spectroscopy. The results reveal that the Ce1-xSmxO2 powders obtained by calcining the precursors prepared...-like one due to its special morphology. Key words: cerium dioxide; precursor; crystal morphology; fluorescence  ......
spinach treated with LaCl3, CeCl3, and NdCl3. Because of owning 4f electron characteristics and alternation valence, Ce treatment presented the highest enhancement in light absorption, energy transfer from LHCⅡ to PSⅡ, excitation energy distribution from PSⅠto PSⅡ, and fluorescence quantum yield around 680 nm. Compared with Ce treatment, Nd treatment resulted in relatively lower enhancement......
; 文献标志码:A 文章编号:1672-7207(2013)11-4566-08 Speech enhancement algorithm based on wavelet packet adaptive threshold revised by posteriori SNR ZHANG... enhancement algorithm causes the speech distortion and residual noise, the speech enhancement algorithm which used the posteriori signal-to-noise ratio (SNR) of wavelet packet nodes to adaptively......
Synthesis, Characterization and Fluorescence of Terbium(Ⅲ) Complexes with Phenylglyoxylic Acid and 2,2-Dipyridine, 1,10-Phenanthroline, Triphenyl Phosphine Oxide Pei Juan1,Sun Bo1,Wang Yunyou2,Geng... for the complex TbL2(TPPO)2NO3.The emission intensity of TbL3dipy(H2O)2 is the strongest among the three complexes. Key words:terbium; complexes; phenylglyoxylic acid; IR spectra; fluorescence spectra; rare......