Title :
Active control of noise in an enclosure using hybrid control techniques
Abstract :
This paper presents an MCHANC (multiple channel hybrid active noise control) system in which multiple channel feedforward algorithms and multiple channel feedback algorithms are used simultaneously. An adjoint LMS algorithm is also used to reduce the computational burden of the adaptive filter. Computer simulations are performed to show the effectiveness the proposed MCHANC and a real time implementation in an experimental enclosure is carried out on a TMS320C31 processor
Keywords :
active noise control; adaptive filters; adaptive signal processing; circuit feedback; digital signal processing chips; feedforward; filtering theory; least mean squares methods; TMS320C31 processor; adaptive filter; adjoint LMS algorithm; computer simulations; experimental enclosure; multiple channel feedback algorithms; multiple channel feedforward algorithms; multiple channel hybrid active noise control; noise attenuation; real time implementation; Acoustic noise; Active noise reduction; Adaptive filters; Control systems; Feedback; Frequency; Least squares approximation; Linearity; Low-frequency noise; Noise cancellation;
Conference_Titel :
Information, Communications and Signal Processing, 1997. ICICS., Proceedings of 1997 International Conference on
Print_ISBN :
0-7803-3676-3
DOI :
10.1109/ICICS.1997.652080
