Baraniuk, Richard G.2007-10-312007-10-311994-10-011994-10-01R. G. Baraniuk, "Wigner-Ville Spectrum Estimation via Wavelet Soft-Thresholding," 1994.https://hdl.handle.net/1911/19694Conference PaperThe 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, we explore 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.engDSP for CommunicationsConference paperhttp://dx.doi.org/10.1109/TFSA.1994.467316