Title :
The use of time algorithms for the realization of an active sound attenuation
Author :
Billoud, Guy ; Galland, Marie-Annick ; Sunyach, Michel
Author_Institution :
Lab. de Mecanique des Fluides et Acoust., Ecole Centrale de Lyon, Ecully, France
Abstract :
The authors consider a characterization method and an adaptive time algorithm used for the evaluation and optimization, respectively, of the required IIR (infinite impulse response) filter coefficients in an active noise control system. A broadband noise attenuation of up to 20 dB was experimentally achieved by these methods, using a controller consisting of an ADSP 2100 digital signal processor. The approach leads to integration of the feedback control within the controller
Keywords :
acoustic signal processing; digital filters; noise abatement; ADSP 2100 digital signal processor; IIR; acoustic signal processing; active noise control system; active sound attenuation; adaptive time algorithm; broadband noise attenuation; feedback control; infinite impulse response; Acoustic noise; Active noise reduction; Adaptive control; Adaptive filters; Attenuation; Control systems; IIR filters; Optimization methods; Programmable control; Signal processing algorithms;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1989. ICASSP-89., 1989 International Conference on
Conference_Location :
Glasgow
DOI :
10.1109/ICASSP.1989.266857
