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Media type:
E-Article
Title:
A study of time-domain FXLMS algorithms with control output constraint
Contributor:
Qiu, Xiaojun;
Hansen, Colin H.
Published:
Acoustical Society of America (ASA), 2001
Published in:
The Journal of the Acoustical Society of America, 109 (2001) 6, Seite 2815-2823
Language:
English
DOI:
10.1121/1.1367247
ISSN:
0001-4966;
1520-8524
Origination:
Footnote:
Description:
A single input, single output active noise control system using the time-domain Filtered-X LMS algorithm with output constraint is investigated. The constraint on the output of the control filter is applied by three different methods: the leakage algorithm based on the transformation method using a penalty function; the re-scaling algorithm based on the active set method; and the simple practical (clipping) algorithm which just clips the output if a constraint is encountered. A comparison of the three algorithms shows that the re-scaling algorithm can usually work successfully under the constraint, while the leakage algorithm usually needs a large leakage coefficient to satisfy the constraint with a resulting performance loss. The clipping algorithm has potential problems both with the stability and convergence speed.