In this paper we propose a new approach for adaptive echo cancellation: the Gauss-Seidel Pseudo Affine Projection algorithm (GSPAP). It is proved by simulations that it is stable, fast convergent and has good tracking abilities. The computational complexity of the GSPAP algorithm is evaluated. It is shown that its simplified and division-less version achieves much improved performances and is o...

In this paper Active Noise Control Mechanism is utilized using higher order X-LMS filter. This techniqueis based on X-NLMS, also known as traditional Acoustic Noise Cancellation (ANC) scheme. It cancels the wideband noise from the corrupted speech signal. It does not consider the effect of sinusoidal noise. In real-time environment, sinusoidal noise is added in the speech signal throughdifferen...

Electrocardiogram (ECG) signal is affected by many noise interferences. Out of all the noise effects the power line interference is the predominant one. In this paper the implementation of the adaptive algorithm techniques for reduction in this power line interference is shown and a comparison of these techniques is performed. The adaptive filters used have shown a good improvement in the SNR (...

In this paper, a filtered-x recursive least squares (FX-RLS) algorithm based on adaptive 3rd-order Volterra filtering is proposed for nonlinear active noise control (ANC) of systems with a nonlinear primary acoustic path. The simulation results show that the proposed approach yields faster convergence, compared with the conventional methods (e.g., FX-NLMS and FX-GSPAP), for the nonlinear ANC. K...

A comparison study of different adaptive algorithms(Least Mean Square(LMS), Normalized Least Mean Square(NLMS), Delayed Least Mean Square(DLMS), Recursive Least Square(RLS), QR decomposition based RLS(QRDRLS), Affine Projection(AP) ) using Adaptive filter is presented in this paper. The paper focuses on these adaptive algorithms which are used to reduce the noise from the signal which is corrup...

The advantages and current limitations of sub-band approaches to echo cancellation are reviewed. Polyphase allpass IIR halfband decimators and interpolators are presented. Their performance is compared to QMF structures in NLMS sub-band echo cancellation for hands-free telephone signals recorded in a car. The polyphase allpass IIR case is shown to give around 2 dB more ERLE with one fifth of th...

In this paper, as a key technology for improvement of speech recognition system in car environments, we propose an acoustic echo canceller for selecting an optimum cancellation result based on the echo estimation with maximum likelihood using transfer characteristics measured prospectively. The results of experiments conducted to speech superimposed on music show that the proposed canceller can...