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Wavelet Soft-Thresholding of Time-Frequency Representations

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Title: Wavelet Soft-Thresholding of Time-Frequency Representations
Author: Baraniuk, Richard G.
Type: Conference Paper
Citation: R. G. Baraniuk,"Wavelet Soft-Thresholding of Time-Frequency Representations," in IEEE International Conference on Image Processing,, pp. 71-74.
Abstract: The high noise sensitivity of the Wigner distribution makes smoothing a necessity for producing readable time-frequency images of noise corrupted signals. Since linear smoothing suppresses noise at the expense of considerable smearing of the signal components, the author explores two nonlinear denoising techniques based on soft-thresholding in an orthonormal basis representation. Soft-thresholding provides considerable noise reduction without greatly impairing the time-frequency resolution of the denoised distribution.
Date Published: 1994-11-01

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  • ECE Publications [1034 items]
    Publications by Rice University Electrical and Computer Engineering faculty and graduate students
  • DSP Publications [508 items]
    Publications by Rice Faculty and graduate students in digital signal processing.