The Research On The Improved System For Active Noise Control Based On The FX-LMS Structure

As the fast development of modern industry, noise control has become a kind of popular demand. The research on developing the noise controlling products would bring important economic benefit. At first, this paper review the growing course of the technology for noise control, then, it made kinds of emulation for the popular used noise control system based on FX-LMS structure. Using kinds of typical background noise, it studied few of factors in the system which would affect the system's function. It work on the system based on the developed structure for improving the effect due to the second route and error route in the FX-LMS structure. Improving the result of system based on the FX-LMS structure while dealing with non-steady signal, the RLS algorithm based QR decompose has been used in the the FX-LMS structure. More emulation study was made on the system using the RLS algorithm based QR decompose and got satisfying result..