A Novel Approach for Improved Noise Reduction Performance in Feed-Forward Active Noise Control Systems With (Loudspeaker) Saturation Non-Linearity in the Secondary Path

2021 ◽  
Vol 29 ◽  
pp. 187-197
Author(s):  
Shakeel Ahmed ◽  
Muhammad Tufail ◽  
Muhammad Rehan ◽  
Tanveer Abbas ◽  
Amna Majid
Keyword(s):  
Noise Reduction ◽  
Control Systems ◽  
Noise Control ◽  
Active Noise Control ◽  
Feed Forward ◽  
Active Noise ◽  
Novel Approach

Coherence-based performance analysis on noise reduction in multichannel active noise control systems

2020 ◽  
Vol 148 (3) ◽  
pp. 1519-1528
Author(s):  
Jihui Aimee Zhang ◽  
Naoki Murata ◽  
Yu Maeno ◽  
Prasanga N. Samarasinghe ◽  
Thushara D. Abhayapala ◽  
...  
Keyword(s):  
Performance Analysis ◽  
Noise Reduction ◽  
Control Systems ◽  
Noise Control ◽  
Active Noise Control ◽  
Active Noise

Adaptive Algorithms for Active Noise Cancellation Using Time-Varying Convergence Coefficient

2014 ◽  
Vol 592-594 ◽  
pp. 2465-2469
Author(s):  
Gaurav Bharti ◽  
Dhananjay Ghangale ◽  
Dhanesh Manik
Keyword(s):  
Control Systems ◽  
Noise Control ◽  
Mean Squared Error ◽  
Active Noise Control ◽  
Time Varying ◽  
Convergence Factor ◽  
Active Noise ◽  
Novel Approach ◽  
The Stability ◽  
Fixed Parameter Algorithm

— The performance of an ANC system depends on the convergence factor. A suitable value of convergence coefficient is extremely important as it impacts both the speed of convergence and the stability of the adaptive algorithm. Traditionally, in active noise control systems fixed convergence factor is used. In this paper, a novel approach of time-varying convergence factor μ is used and the results are compared with traditional feedforward and feedback noise control systems. This algorithm leads to faster convergence and provides reduced mean-squared error compared to the conventional fixed parameter algorithm.

Application of a Multipole Secondary Source for Propeller Active Noise Control

2014 ◽  
Vol 564 ◽  
pp. 135-142 ◽  
Author(s):  
Muhammad Kusni ◽  
Benjamin Soenarko ◽  
Harijono Djojodihardjo
Keyword(s):  
Noise Reduction ◽  
Noise Control ◽  
Free Field ◽  
Active Noise Control ◽  
Secondary Source ◽  
Frequency Noise ◽  
Secondary Sources ◽  
Active Noise ◽  
Novel Approach ◽  
Active Noise Reduction

The commercial feasibility of active noise control (ANC) is very promising due to its capability beyond passive noise control (PNC). To some extent ANC becomes a complement of PNC. The active noise reduction is also capable and beneficial in reducing noise selectively. However, the active noise reduction using a conventional secondary source can become very complicated if a significant noise level reduction is required, since a large number of secondary sources will be needed. The active noise reduction is also less effective for reducing high-frequency noise. With such perspectives, a novel approach has been developed using a multipole secondary source to addressthe problems mentioned. In addition, the multipole secondary source will be used for numerical simulation of noise reduction in of propeller noise source in a free field.

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