Performance Comparison of Modified Non-Linear FxLMS Algorithm for Impulsive Noise Based on ANCs

2019 ◽  
Author(s):  
Sohaib Hasan Khan ◽  
Syed Muslim Shah ◽  
Irfan Zafar ◽  
Junaid Shuja ◽  
Muhammad Ali Humayun
Keyword(s):  
Impulsive Noise ◽  
Performance Comparison ◽  
Fxlms Algorithm ◽  
Non Linear

Experimental Study on Enhanced FXLMS Algorithm for Active Impulsive Noise Control

2013 ◽  
Vol 6 (2) ◽  
pp. 514-519 ◽  
Author(s):  
Guohua Sun ◽  
Mingfeng Li ◽  
Teik C. Lim ◽  
Ming-Ran Lee ◽  
Ming Cheng ◽  
...  
Keyword(s):  
Experimental Study ◽  
Noise Control ◽  
Impulsive Noise ◽  
Fxlms Algorithm

scholarly journals Performance comparison of linear and non-linear feature selection methods for the analysis of large survey datasets

PLoS ONE ◽  
2019 ◽  
Vol 14 (3) ◽  
pp. e0213584 ◽  
Author(s):  
Olga Krakovska ◽  
Gregory Christie ◽  
Andrew Sixsmith ◽  
Martin Ester ◽  
Sylvain Moreno
Keyword(s):  
Feature Selection ◽  
Performance Comparison ◽  
Selection Methods ◽  
Linear Feature ◽  
Non Linear ◽  
Large Survey

KTX Interior-Noise Reduction Performance Comparison Using Multichannel Active-Noise Control

2012 ◽  
Vol 152-154 ◽  
pp. 1891-1898
Author(s):  
Hyeon Seok Jang ◽  
Young Min Kim ◽  
Saehan Kim ◽  
Taeoh Lee ◽  
Kwon Soon Lee
Keyword(s):  
Noise Reduction ◽  
High Speed ◽  
Noise Control ◽  
Active Noise Control ◽  
Sound Field ◽  
Performance Comparison ◽  
High Speed Rail ◽  
Active Noise ◽  
Tunnel Section ◽  
Fxlms Algorithm

In many countries, the use of the KTX high-speed rail has been generalized of late. Therefore, its customers who initially pursued only convenience and speed have begun pursuing quality services such as comfort and stability. Thus, the importance of reducing the noise in the high-speed rail is increasing. The active noise is best choice to reduce noise because of being able to actively reduce the ambient noise coming from the environmental-factor changes. But it’s too hard in a three-dimensional closed-space sound field such as the interior of a high-speed rail. In this study, we used multichannel(2x2) FXLMS algorithm for applying ANC system in KTX. In detail, after measuring the noise inside KTX during its runs in South Korea, multichannel active noise control was simulated to determine the extent to which it can reduce the noise inside KTX. Simulation was done using a multichannel FXLMS algorithm for reducing the actual noise inside KTX and the noise reduction in the open-space section of KTX was compared with that in the tunnel section, and the active-noise-control performances in the low-frequency (below 500 Hz) region were compared.

scholarly journals Design and performance comparison of different adaptive control schemes for pitch angle control in a twin – rotor – MIMO – system

2019 ◽  
Vol 9 (5) ◽  
pp. 4114 ◽  
Author(s):  
Winston Netto ◽  
Rohan Lakhani ◽  
S. Meenatchi Sundaram
Keyword(s):  
Adaptive Control ◽  
Mimo System ◽  
Cross Coupling ◽  
Performance Comparison ◽  
Superior Performance ◽  
Main Rotor ◽  
Adaptive Schemes ◽  
Non Linear ◽  
Twin Rotor Mimo System ◽  
Twin Rotor

The Twin Rotor MIMO System is a higher order non-linear plant and is inherently unstable due to cross coupling between tail and main rotor. In this paper only the control of main rotor is considered which is non-linear and stable by using adaptive schemes. The control problem is to achieve perfect tracking for input reference signals while maintaining robustness and stability. Four adaptive schemes were implemented, two using Model Reference Adaptive Control under which MIT rule and Modified MIT rule are used. The other two using Adaptive Interaction, namely, Adaptive PID and Approximate Adaptive PID. It is observed that adaptive schemes fulfill all the three system performance requirements at the same time. Modified MIT rule was found to give superior performance in comparison to other controllers. Also Approximate Adaptive PID was able to stabilize the main rotor and cancel the effect of cross coupling between tail rotor and main rotor when operating simultaneously without the need for designing decouplers for the system. Thus the main rotor can be made independent from the state of the tail rotor by using Approximate Adaptive PID.

scholarly journals Modified Turbo and SDROM Method for Speech Processing for Cochlear Implants

2018 ◽  
Vol 7 (4.5) ◽  
pp. 179
Author(s):  
Rohini S.Hallikar ◽  
M Uttarakumari ◽  
Padmaraju K ◽  
Yashas D
Keyword(s):  
Cochlear Implants ◽  
Speech Processing ◽  
Impulsive Noise ◽  
Rank Order ◽  
Signal To Noise Ratio ◽  
Performance Comparison ◽  
Superior Performance ◽  
Spectral Distortion ◽  
Enhancement Method ◽  
Made In

A performance comparison of Signal Dependent Rank Order Mean (SDROM) method of speech signal enhancement with a speech enhancement method which makes use of a Turbo combination and SDROM filter referred to as modified Turbo and SDROM technique is made in this paper. Normally, speech signals are used as inputs to a cochlear implant signal processing unit.Sounds are corrupted by different noises such as AWGN, Impulsive noise and babble. The results are evaluated in terms of enhancements evaluations done by basically three parameters namely correlation coefficient, log spectral distortion (LSD) and segmental signal to noise ratio(SSNR). These parameters are calculated between the processed and the clean signals.. Results prove the superior performance of the new method especially for AWGN corrupted speech.   

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