In this paper, A variable step-size filtered-X LMS (VSS-FXLMS) algorithm is first introduced to replace the filtered-X LMS (FXLMS) algorithm in the main controller of conventional narrowband ANC system, and extensive simulations reveal that this ANC system may also suffer from significant performance degradation in the presence of Frequency mismatch (FM), although it acts better in the key char...

In this paper an active noise control (ANC) algorithm is proposed. This algorithm is based on adaptive filtering with averaging (AFA) and uses a similar structure as that of the FxLMS ANC system. The proposed algorithm, which we call FxAFA algorithm, uses averages of both data and correction terms to find the updated values of the tap weights of the ANC controller. The computer simulations are ...

The LMS (Least-Mean-Square) algorithm, which can obtain the complex transfer function in real-time, allows the changes of noise characteristics and the environment of system, thereby maintaining the convergence performance. Therefore, many algorithms based on the LMS algorithm have been modified to solve for some practical considerations, and the FXLMS (Filtered-X LMS) algorithm has been widely...

Magnetic Resonance Imaging (MRI) scanners emit up to 135 decibels of acoustic noise, which is a major source discomfort for patients and personnel evaluating them during routine medical scans, necessitating the development method reduce noise generated MRI testing. The goal this study propose frequency-domain Active Noise Control (ANC) reduction in demonstrate its ANC effectiveness on an experi...

Several approaches have been introduced in literature for active noise control (ANC)systems. Since Filtered-x-Least Mean Square (FxLMS) algorithm appears to be the best choice as acontroller filter. Researchers tend to improve performance of ANC systems by enhancing andmodifying this algorithm. This paper proposes a new version of FxLMS algorithm. In many ANCapplications an online secondary pat...

This study presents an active noise control (ANC) algorithm using long short-term memory (LSTM) layers as a type of recurrent neural network. The filtered least-mean-square (FxLMS) is widely used ANC algorithm, where the in target area reduced through signal generated from adaptive filter. Artificial intelligence can enhance reduction performance for specific applications. An LSTM artificial ne...

Passive noise reduction methods require thick and heavy barriers to be effective for low frequencies those clasical ones are thus not suitable of frequency generated by devices. Active noise-cancelling casings, where casing walls vibrations actively controlled, an interesting alternative that can provide much higher low-frequency reduction. Such systems, compared classical ANC only local, but a...

The filter-x least mean square (FxLMS) algorithm is widely used in active noise control (ANC) systems. However, because the a feedback based on minimization of error signal variance to update filter coefficients, it has certain delay, usually slow convergence speed, and system response time long easily affected by learning rate leading lack stability, which often fails achieve desired effect pr...