共 2 条
[1]
Algorithm for detecting the first and the second heart sounds by spectral tracking[J] . A. Iwata,N. Ishii,N. Suzumura,K. Ikegaya.Medical & Biological Engineering & Computing . 1980 (1)
[2]
Ideal spatial adaptation by wavelet shrinkage .2 Donoho DL,Johnstone. Biometrika . 1994