314 Active Noise Control Using Impulse Response Interpolation Method

2004 ◽  
Vol 2004 (0) ◽  
pp. _314-1_-_314-6_
Author(s):  
Tomonao OKUYAMA ◽  
Hiroshi MATSUHISA ◽  
Hideo UTSUNO ◽  
Jeong Gyu PARK
Keyword(s):  
Impulse Response ◽  
Noise Control ◽  
Interpolation Method ◽  
Active Noise Control ◽  
Active Noise

scholarly journals Length Variation Effect of the Impulse Response Model of a Secondary Path in Embedded Control

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Young-Sup Lee ◽  
Yunseon Choi ◽  
Jeakwan Kim
Keyword(s):  
Impulse Response ◽  
Noise Control ◽  
Active Noise Control ◽  
Path Model ◽  
Length Variation ◽  
Control Board ◽  
Computation Complexity ◽  
Embedded Control ◽  
Active Noise ◽  
Fxlms Algorithm

This study presents theoretical and experimental investigation on the length variation effect of the impulse response function (IRF) for the secondary path model in active noise control using an embedded control board. A narrowband sweep noise was the disturbance for control in a duct with the length of 1800 mm. The IRF model incorporated into an adaptive feedforward filtered-x LMS (FxLMS) algorithm was then analyzed in the variation of its length in terms of the mean square error, computation complexity, stability requirement, and attenuation performance before and after control. The FxLMS algorithm with various IRF lengths was implemented in a dSPACE DS1104 embedded control board for the real-time control. Finally the most reasonable IRF length, considering the computation complexity and performance, can be determined through the systematic investigation. The results in this study can be used for practical active noise control systems.

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