For effective removal of noises in seismic signals, this paper proposes an adaptive threshold denoising algorithm that integrates wavelet transform with entropy and inter-scale correlation (EIS) model. Firstly, noisy signals were decomposed by discrete wavelet transform, the high-frequency sub-bands on each scale were divided into equal subintervals, and the wavelet entropies of the subintervals were computed one by one. Secondly, the correlation coefficients of sampling points on each scale were calculated, and then compared with the high-freq...