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自适应离散Gabor变换及其时频滤波 被引量：1

Adaptive discrete Gabor transform and its time-frequency filtering
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摘要 为了提高Gabor表示的时频分辨率,使用了基于度量函数的窗函数宽度自适应选择算法,并利用其优化后的Gabor时频分布在时频联合域内运用时频掩蔽技术进行滤波,用于非平稳信号的中分量提取或降噪。实验结果表明了改进的自适应离散Gabor变换算法在信号处理中的有效性和实用性。 This paper proposed an adaptive algorithm for Gabor transform which improved the time-frequency resolution with higher practicability and adaptability. It presented a time-frequency filter on the joint time-frequency plane based on its excellent time-frequency distribution and time-frequency masking,which could used to extract signal components and denoise. The experimental results showed that the filter based on adaptive Gabor transform is effective and practical in signal processing.
作者 胡国华 李锐 胡学友 陶亮
机构地区 安徽大学计算智能与信号处理教育部重点实验室 合肥学院电子信息与电气工程系
出处 《计算机应用研究》 CSCD 北大核心 2015年第5期1421-1423,共3页 Application Research of Computers
基金 安徽省高校优秀青年人才基金资助项目(2011SQRL133) 国家自然科学基金资助项目(61071169 61372137) 国家级电子信息工程特色专业建设项目(TS11497) 安徽省通信工程特色专业建设项目(2014tszy028) 合肥学院重点建设学科项目(2014xk06) 安徽大学2012级研究生学术创新研究项目(yqh100151)
关键词 Gabor表示 时频分辨率 时频掩蔽 时频滤波 Gabor representation time-frequency resolution time-frequency masking time-frequency filter
分类号 TN911.7 [电子电信—通信与信息系统]
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参考文献16

  • 1GABOR D. Theory of communication[J] Journal of the Instiution of Electrical Engineers,1947,94(73):58-59.
  • 2STANKOVI L. A measure of some time-frequency distributions concentration[J].Signal Processing,2001,81(3):621-631.
  • 3SEJDI E,DJUROVI I,JIANG J. Time-frequency feature representation using energy concentration:an overview of recent advances[J].Digital Signal Processing,2009,19(1):153-183.
  • 4XIAO J,FLANDRIN P. Multitaper time-frequency reassignment for nonstationary spectrum estimation and chirp enhancement[J].IEEE Trans on Signal Processing,2007,55(6):2851-2860.
  • 5ZHONG Jin-gang,HUANG Yu. Time-frequency representation based on an adaptive short-time Fourier transform[J].IEEE Trans on Signal Processing,2010,58(10):5118-5128.
  • 6PEI S C,HUANG S G. STFT with Adaptive Window width based on the chirp rate[J].IEEE Trans on Signal Processing,2012,60(8):4065-4080.
  • 7Van DIJK B,MOONEN M,WOUTERS J. Speech understanding performance of cochlear implant subjects using time-frequency masking-based noise reduction[J].IEEE Trans on Biomedical Engineering,2012,59(5):1364-1373.
  • 8AKAN A,CHAPARRO L F. Multi-window Gabor expansion for evolutionary spectral analysis[J].Signal Processing,1997,63(1):249-262.
  • 9FREEMAN W J,QUIROGA R Q. Time-Frequency Analysis[M] //Imaging Brain Function with EEG. New York:Springer,2013:37-48.
  • 10QIAN S,CHEN D. Discrete Gabor transform[J].IEEE Trans on Signal Processing,1993,41(7):2429-2438.

二级参考文献7

  • 1Daubechies I and Planchon F. Adaptive Gabor transforms. Applied and Computational Harmonic Analysis. 2002, 13(!): 1-21.
  • 2Douglas J and Thomas P. A high resolution data-adaptive time-frequency representation. IEEE Trans. on Acoustics, Speech, and Signal Processing, 1990, 38(12): 2127-2135.
  • 3Tomasz Z. ,Joint time-frequency resolution of signal analysis using Gabor transform. IEEE Trans. on Instrumentation and Measurement, 2001, 50(5): 1436-1444.
  • 4Sweeney J, Orr R, and Balart R, et al.. Experiments in dimensionally-optimum Gabor representations. IEEE International Conference on Acoustics, Speech, and Signal Processing. Minneapolis, USA, 1993, 3: 265-268.
  • 5Stankovic L. A measure of some time-frequency distributions concentration. Signal Processing, 2001, 81(4): 621-631.
  • 6Richard G, Patrick F, and Augustus J, et al. Measuring time-frequency information content using the Renyi entropies. IEEE Trans. on Information Theory, 2001, 47(4): 1391-1409.
  • 7Wang Q and Shen Y. Performances evaluation of image fusion techniques based on nonlinear correlation measurement. Proc. of IEEE Instrumentation and Measurement Technology Conference, Como, Italy, 2004: 472-475.

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计算机应用研究
2015年 第5期

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