Y. Wu, Z. Li, H. Ren

In this paper, experiments which applied ANC technique to cancel unwanted sound in an enclosed room ( 7. 8 X 3. 5 X 2. 5M^3) are implemented and evaluated. A multi-variant filtered-X LMS algorithm is proposed and a MIMO control system which has sixteen error inputs and eight secondary outputs is developed. The experiments, when primary sound field is respectively excited by a sinusoidal signal or a tape signal from the cain noise of an aircraft, are carried out. The experimental result shows that the multichannel adaptive active noise control system can efficiently attenuated the noise ·level of the enclosed room in a large area and maximum attenuation of 34d.B for the sinusoidal signal and 2ldB for the tape signal.

First Joint CEAS/AIAA Aeroacoustics Conference, München, 1995

Conference Paper

englisch

21,0 x 29,7 cm, 8 Seiten

DGLR-Bericht, 1995, 1995-01, First Joint CEAS/AIAA Aeroacoustics Conference - Proceedings; S.625-632; 1995; Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn

NA

aeroacoustics

Bibliothek

1995