Active Control of Sound using the Actuator-Individual Normalized Filtered-X LMS Algorithm

Document type: Conference Papers
Peer reviewed: Yes
Author(s): Sven Johansson, Sven Nordebo, Per Sjösten, Mathias Winberg, Ingvar Claesson
Title: Active Control of Sound using the Actuator-Individual Normalized Filtered-X LMS Algorithm
Conference name: Inter-Noise 2001
Year: 2001
Pagination: 685-690
City: Hague, Netherlands
Organization: Blekinge Institute of Technology
Department: Department of Telecommunications and Signal Processing (Institutionen för telekommunikation och signalbehandling)
Department of Telecommunications and Signal Processing S-372 25 Ronneby
+46 455 38 50 00
Authors e-mail: sven.johansson@bth.se
Language: English
Abstract: The control algorithm is a central part of an active noise control system. The computational power of the DSP hardware is limited, and therefore algorithms with high computational complexity allow fewer control sources and sensors to be used, often with reduced noise attenuation as a result. This paper presents results from practical experiments using an ANC system based on the actuator-individual normalized Filtered-X LMS algorithm. The algorithm combines low computational complexity with high performance. For that reason the algorithm is suitable for use in large multi-channel systems in order to reduce the computional power required by the control system.
Subject: Signal Processing\Active Noise and Vibration Control
Keywords: active control, feedforward control, normalized filtered-x lms
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