Title
Casual constraints on the active control of sound
Abstract
The problem is addressed of evaluating the maximum net reduction in acoustic power output produced by introducing a single point monopole secondary source to control the sound field radiated by a single point monopole primary source in a free field. The secondary source is constrained to act causally with respect to the primary source. The problem reduces to solving a Wiener-Hopf integral equation for the optimal realisable impulse response relating the secondary and primary source outputs. A solution is given which has a well-defined physical significance and demonstrates the need for the secondary source to act as a predictor in order that destructive interference of the primary field is possible at field points closer to the primary source than the secondary source.
Year
DOI
Venue
1987
10.1109/ICASSP.1987.1169895
Acoustics, Speech, and Signal Processing, IEEE International Conference ICASSP '87.
Keywords
DocType
Volume
acoustic waves,integral equation,vibration control,frequency domain analysis,thermal conductivity,impulse response,interference cancellation
Conference
12
Citations 
PageRank 
References 
1
0.63
0
Authors
3
Name
Order
Citations
PageRank
Nelson, P.A.110.63
Hammond, J.210.63
Elliott, S.J.310921.40