A signal enhancer, comprising a delay module (Z -Δ) coupled to an input (d(n)) of the signal enhancer an adaptive filter coupled to an output of the delay module, for outputting a target signal (g(n)); and a parameter adjustment module for adjusting parameters of the adaptive filter by a convergent criterion and an irregular criterion in real-time, wherein the parameter adjustment module includes: an operation unit of the convergent criterion coupled to the input of the enhancer and the output of the adaptive filter, for calculating a minimum mean square of an error signal (e(n)) between the input of the signal enhancer and the output of the adaptive filter as the convergent criterion an operation unit of the irregular criterion coupled to the output of the adaptive filter, for processing a calculation by a time function of the Hurst exponent to construct the irregular criterion in discrete time series; and an iterative operation unit coupled to the operation unit of the convergent criterion and the operation unit of the irregular criterion, for iteratively calculating parameters of the adaptive filter w n + 1 = w n + μ 2 e n h n − λ ln i 1 − ln i 2 h n − h n + i 1 g n − g n + i 1 − h n − h n + i 2 g n − g n + i 2, by means of a cost function J w = C w + λH w, in order to allow the adaptive filter output a denoised target signal under the introduction of the adjusted parameters, wherein, J w is the cost function, C w is the convergent criterion, λ is the Lagrange multiplier, H w is the irregular criterion, n is the time ordinal, w(n) is the parameter matrix of the adaptive filter, μ is the iteration step size, e(n) is the error signal, h(n) is a matrix h(n) = [ h ( n) h ( n-1)... h ( n-L) T, where h ( n) is the output of the delay module applied to the input of the adaptive filter and L is the length of the adaptive filter, g(n) is the output of the adaptive filter, and i 1, i 2 are the ordinal intervals. a delay module (Z -Δ) coupled to an input (d(n)) of the signal enhancer an adaptive filter coupled to an output of the delay module, for outputting a target signal (g(n)); and a parameter adjustment module for adjusting parameters of the adaptive filter by a convergent criterion and an irregular criterion in real-time, wherein the parameter adjustment module includes: an operation unit of the convergent criterion coupled to the input of the enhancer and the output of the adaptive filter, for calculating a minimum mean square of an error signal (e(n)) between the input of the signal enhancer and the output of the adaptive filter as the convergent criterion an operation unit of the irregular criterion coupled to the output of the adaptive filter, for processing a calculation by a time function of the Hurst exponent to construct the irregular criterion in discrete time series; and an iterative operation unit coupled to the operation unit of the convergent criterion and the operation unit of the irregular criterion, for iteratively calculating parameters of the adaptive filter w n + 1 = w n + μ 2 e n h n − λ ln i 1 − ln i 2 h n − h n + i 1 g n − g n + i 1 − h n − h n + i 2 g n − g n + i 2, by means of a cost function J w = C w + λH w, in order to allow the adaptive filter output a denoised target signal under the introduction of the adjusted parameters, wherein, J w is the cost function, C w is the convergent criterion, λ is the Lagrange multiplier, H w is the irregular criterion, n is the time ordinal, w(n) is the parameter matrix of the adaptive filter, μ is the iteration step size, e(n) is the error signal, h(n) is a matrix h(n) = [ h ( n) h ( n-1)... h ( n-L) T, where h ( n) is the output of the delay module applied to the input of the adaptive filter and L is the length of the adaptive filter, g(n) is the output of the adaptive filter, and i 1, i 2 are the ordinal intervals. an operation unit of the convergent criterion coupled to the input of the enhancer and the output of the adaptive filter, for calculating a minimum mean square of an error signal (e(n)) between the input of the signal enhancer and the output of the adaptive filter as the convergent criterion an operation unit of the irregular criterion coupled to the output of the adaptive filter, for processing a calculation by a time function of the Hurst exponent to construct the irregular criterion in discrete time series; and an iterative operation unit coupled to the operation unit of the convergent criterion and the operation unit of the irregular criterion, for iteratively calculating parameters of the adaptive filter w n + 1 = w n + μ 2 e n h n − λ ln i 1 − ln i 2 h n − h n + i 1 g n − g n + i 1 − h n − h n + i 2 g n − g n + i 2, by means of a cost function J w = C w + λH w, in order to allow the adaptive filter output a denoised target signal under the introduction of the adjusted parameters, wherein, J w is the cost function, C w is the convergent criterion, λ is the Lagrange multiplier, H w is the irregular criterion, n is the time ordinal, w(n) is the parameter matrix of the adaptive filter, μ is the iteration step size, e(n) is the error signal, h(n) is a matrix h(n) = [ h ( n) h ( n-1)... h ( n-L) T, where h ( n) is the output of the delay module applied to the input of the adaptive filter and L is the length of the adaptive filter, g(n) is the output of the adaptive filter, and i 1, i 2 are the ordinal intervals.