中国科学院机构知识库网格系统: 检索

浏览/检索结果: 共3条，第1-3条

帮助

条数/页：排序方式：
	Fabrication of titanium dioxide nanotubes with good morphology at high calcination temperature and their photocatalytic activity 期刊论文 OAI收割 MATERIALS CHEMISTRY AND PHYSICS, 2017, 卷号: 202, 页码: 136-142 作者: Wu, Liangpeng; Yang, Xu; Li, Juan; Huang, Yanqin; Li, Xinjun \| 收藏 \| 浏览/下载：33/0 \| 提交时间：2018/11/21 Titanium Oxide Nanotubes Good Morphology Photocatalytic Activity Methyl Orange
	Facile Synthesis of Mesoporous Manganese-Iron Nanorod Arrays Efficient for Water Oxidation 期刊论文 OAI收割 ACS SUSTAINABLE CHEMISTRY & ENGINEERING, 2016, 卷号: 4, 期号: 10, 页码: 5398-5403 作者: Yan, Kai; Lu, Yiran; Jin, Wei 收藏 \| 浏览/下载：25/0 \| 提交时间：2016/12/26 Green synthesis MnFe2O4 nanorod Mesoporous Water oxidation Low overpotential Good activity
	Speech signal enhancement through wavelet domain MMSE filtering (EI CONFERENCE) 会议论文 OAI收割 2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China Fenghua Z.; Le Y.; Jian W.; Qiang S. 收藏 \| 浏览/下载：27/0 \| 提交时间：2013/03/25 A new speech enhancement system that combine robust signal enhancement and minimum signal distortion is proposed in this paper. The proposed method introduces frequency depended parametric MMSE filtering techniques that involve wavelet packets. Voice activity detection (VAD) is used to further distinguish speech from noise and help to adaptively remove noise components from color noise eruptive noisy speech while perceptual criteria is also taken into account. Experimental results and objective quality measurement test results validate the proposed speech enhancement system and illustrate the benefit of the proposed wavelet domain MMSE filtering as an excellent speech enhancement method to provide sufficient noise reduction and good intelligibility and perceptual quality without causing considerable signal distortion and musical background noise method. 2010 IEEE.