New hybrid structure for adaptive active noise control

2010 ◽  
Author(s):  
H. Okumura ◽  
T. Ohno ◽  
H. Ohmori ◽  
A. Sano
Keyword(s):  
Noise Control ◽  
Active Noise Control ◽  
Hybrid Structure ◽  
Active Noise

A New Time Varying Hybrid Active Noise Control System with Online Secondary Path Modelling

2014 ◽  
Vol 592-594 ◽  
pp. 2455-2459
Author(s):  
Dhananjay Ghangale ◽  
Dhanesh Manik
Keyword(s):  
High Performance ◽  
Noise Control ◽  
Active Noise Control ◽  
Hybrid Structure ◽  
Lms Algorithm ◽  
Variable Step Size ◽  
Step Size ◽  
Active Noise ◽  
Variable Step ◽  
Path Modelling

—Active noise control is used to reduce low frequency noises. A hybrid ANC structure combines feedforward and feedback structure to generate an anti-noise wave, which results in high performance in control of unwanted noise. In this paper, a hybrid structure for active noise control (ANC) is developed. The hybrid structure utilises a variable step size LMS algorithm for faster convergence. This structure also incorporates variable step size (VSS) online secondary path modelling, the white noise injection is stopped at the optimum point when the modelling accuracy is sufficient. Comparative simulation results shown in this paper indicate the effectiveness of the proposed approach in reducing acoustic noises.

APPLICATION OF ACTIVE NOISE CONTROL TO AN ELEVATOR CABIN

2002 ◽  
Vol 35 (1) ◽  
pp. 67-72 ◽  
Author(s):  
J. Landaluze ◽  
I. Portilla ◽  
N. Cabezón ◽  
A. Martinez ◽  
R. Reyero
Keyword(s):  
Noise Control ◽  
Active Noise Control ◽  
Active Noise
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