Fig. 1. Comparison of soft threshold function, hard threshold function, and soft and hard threshold compromise function

Fig. 2. Two-parameter threshold function when b=1 and c=0.3, 0.5, 0.8

Fig. 3. Two-parameter threshold function when c=0.5 and b=0.5,1,5

Fig. 4. Wavelet coefficients of B0531+21 noise signal after three-layer decomposition

Fig. 5. Noisy signal profile of B0531+21

Fig. 6. Standard signal profile of B0531+21

Fig. 7. Correlation coefficient distribution of db wavelets under 1-8 decomposition layers

Fig. 8. Correlation coefficient distribution of coif wavelets under 1-8 decomposition layers

Fig. 9. Correlation coefficient distribution of sym wavelets under 1-8 decomposition layers

Fig. 10. Comparison of denoising profile of hard threshold method and standard profile

Fig. 11. Comparison of denoising profile of soft threshold method and standard profile

Fig. 12. Comparison of denoising profile of soft-hard threshold compromise method and standard profile

Fig. 13. Comparison of denoising profile of proposed method and standard profile

Fig. 14. Signal-to-noise ratio histogram

Fig. 15. Peak signal-to-noise ratio histogram

Fig. 16. Peak position error histogram