Design considerations for active noise control systems implementing the multiple input, multiple output lms algorithm

• Published in: Journal of sound and vibration Vol. 159; no. 1; pp. 157 - 174
• Main Authors: Snyder, S.D., Hansen, C.H.
• Format: Journal Article
• Language: English
• Published: London Elsevier Ltd 22.11.1992; Elsevier
• Subjects: Acoustics; Exact sciences and technology; Fundamental areas of phenomenology (including applications); Noise: its effects and control; Physics; MIMO system; Computer program; Active system; Least squares method; Noise reduction; Control system; Signal processing; Vibration control; Monitoring control system
• ISSN: 0022-460X; 1095-8568
• DOI: 10.1016/0022-460X(92)90456-8

While research in the field of active noise control has increased dramatically in recent years, practical systems remain scarce. This is due to the demands placed on the active control devices by most realistic (mufti-modal) structural/acoustic systems. When considering the design of an active noise control system for these complex acoustic problems, the design of the “physical” system and the “electronic control” system can be considered separately. This paper considers the design of the electronic control system by examining the effect which system variables have upon the stability of the multiple input, multiple output LMS algorithm. The results obtained here provide some insights into the efficient implementation of the algorithm in an active noise control system.