This letter proposes a novel nonlinear distortion for the unique identification of receiving room impulses in stereo acoustic echo cancellation when applying the frequency-domain adaptive filtering technique. This nonlinear distortion is effective in reducing the coherence between the two incoming audio channels and its influence on audio quality is inaudible. key words: acoustic echo cancellat...

We provide a unified proof of the asymptotics of the self-dual MaxwellChern-Simons vortices, as the Maxwell term is neglected, in both the U(1) and CP (1) case. This result is achieved by identifying and analyzing a suitable class of nonlinear elliptic systems with exponential type nonlinearities. key words: nonlinear elliptic system, Chern-Simons vortex theory MCS 2000 subject classification: ...

This paper describes the numerical model BOUSS-WMH (BOUSSinesq Wave Model for Harbours), a finite element model for nonlinear wave propagation near shore and into harbors. It is based upon an extended version of the Boussinesq equations to which terms were added to generate regular or irregular waves inside the numerical domain, absorb outgoing waves, partially reflect waves at physical boundar...

In this paper, a disturbance observer based controller is proposed for the compensation of nonlinear friction in a servodrive system. The designed nonlinear controller uses the estimated system states (position, velocity) and disturbance to enhance tracking performance of the servodrive using high stiff gains for the compensation of the effects of nonlinear friction. The effectiveness of this d...

In this paper we review some of the dominant topics in fiber Bragg gratings (FBGs). The combination of theory and simulations shows that these structures can use in filters, nonlinear fiber optical applications, soliton propagations etc. We discussed the theory of FBGs, grating solitons, Bragg soliton generation in intrinsic media and birefringence effects in FBGs together with some numerical s...

Vegetarianism is an old classic eating behavior that leads to lessening of several health risk factors. Vegetarian diet is reported to improve control of blood glucose concentration, to lower insulin requirement and to aid in weight control in diabetic patients. However, there is no evidence for the prevalence of diabetes mellitus to be significantly lower in vegetarians than in non-vegetarians...

The paper deals with the problem of nonlinear fuzzy observers for a class of continuous-time nonlinear systems, represented by Takagi-Sugeno models with local nonlinear terms. On the basis of the Lyapunov stability criterion and incremental quadratic inequalities, the sufficient LMI design conditions are outlined. Numerical example is given to illustrate the procedure and to validate the perfor...

In this paper, based on the known first integral method, we try to seek the traveling wave solutions of several nonlinear evolution equations. As a result, some exact travelig wave solutions and solitary solutions for Whitham-Broer-Kaup (WBK) equations, Gardner equation, Boussinesq-Burgers equations, nonlinear schrodinger equation and mKDV equation are established successfully. Key–Words: First...

In this paper, an algorithm for the sliding mode control of typical nonlinear systems is proposed. It is based on speed/distance relation during the reaching phase and the state velocity versus state variable relation of 2nd-order nonlinear systems. A new speed control relationship in the reaching phase is developed. The result shows that such relationship performs better than similar ones, and...