Loudspeaker nonlinearity compensation with inverse tangent hyperbolic function-based predistorter for active noise control
In active noise control (ANC), the performance of the filtered-x least mean squares (FXLMS) algorithm is degraded by the saturation of the loudspeaker in the secondary path. Predistortion is a linearization technique commonly used in signal processing applications to compensate for saturation nonlin...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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SAGE Publications
2014
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| Online Access: | http://psasir.upm.edu.my/id/eprint/34399/1/Loudspeaker%20nonlinearity%20compensation%20with%20inverse%20tangent%20hyperbolic%20function.pdf |
| _version_ | 1825948442263814144 |
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| author | Sahib, Mouayad Abdulredha Raja Ahmad, Raja Mohd Kamil |
| author_facet | Sahib, Mouayad Abdulredha Raja Ahmad, Raja Mohd Kamil |
| author_sort | Sahib, Mouayad Abdulredha |
| collection | UPM |
| description | In active noise control (ANC), the performance of the filtered-x least mean squares (FXLMS) algorithm is degraded by the saturation of the loudspeaker in the secondary path. Predistortion is a linearization technique commonly used in signal processing applications to compensate for saturation nonlinearity. The design of the predistorter (PD) requires the use of direct measurement from the output of the nonlinear element. However, in ANC applications, direct measurement from the loudspeaker output is not available. Therefore, a conventional PD design approach cannot be directly applied. In this paper, a new PD-based compensation technique based on the inverse model of the loudspeaker nonlinearity is proposed. The PD is represented by an approximated memory-less inverse tangent hyperbolic function (ITHF). The approximated ITHF is scaled by a pre-identified parameter, which represents the loudspeaker nonlinearity strength. This parameter can be obtained by modelling the secondary path using a proposed block-oriented Hammerstein structure in which the nonlinear part is represented by a memory-less tangent hyperbolic function (THF). Simulation results show that using the proposed PD along with the FXLMS algorithm increase the noise reduction performance significantly. |
| first_indexed | 2024-03-06T08:28:53Z |
| format | Article |
| id | upm.eprints-34399 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T08:28:53Z |
| publishDate | 2014 |
| publisher | SAGE Publications |
| record_format | dspace |
| spelling | upm.eprints-343992016-01-22T03:10:49Z http://psasir.upm.edu.my/id/eprint/34399/ Loudspeaker nonlinearity compensation with inverse tangent hyperbolic function-based predistorter for active noise control Sahib, Mouayad Abdulredha Raja Ahmad, Raja Mohd Kamil In active noise control (ANC), the performance of the filtered-x least mean squares (FXLMS) algorithm is degraded by the saturation of the loudspeaker in the secondary path. Predistortion is a linearization technique commonly used in signal processing applications to compensate for saturation nonlinearity. The design of the predistorter (PD) requires the use of direct measurement from the output of the nonlinear element. However, in ANC applications, direct measurement from the loudspeaker output is not available. Therefore, a conventional PD design approach cannot be directly applied. In this paper, a new PD-based compensation technique based on the inverse model of the loudspeaker nonlinearity is proposed. The PD is represented by an approximated memory-less inverse tangent hyperbolic function (ITHF). The approximated ITHF is scaled by a pre-identified parameter, which represents the loudspeaker nonlinearity strength. This parameter can be obtained by modelling the secondary path using a proposed block-oriented Hammerstein structure in which the nonlinear part is represented by a memory-less tangent hyperbolic function (THF). Simulation results show that using the proposed PD along with the FXLMS algorithm increase the noise reduction performance significantly. SAGE Publications 2014-12 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/34399/1/Loudspeaker%20nonlinearity%20compensation%20with%20inverse%20tangent%20hyperbolic%20function.pdf Sahib, Mouayad Abdulredha and Raja Ahmad, Raja Mohd Kamil (2014) Loudspeaker nonlinearity compensation with inverse tangent hyperbolic function-based predistorter for active noise control. Transaction of the Institute of Measurement and Control , 36 (8). pp. 971-982. ISSN 0142-3312; ESSN: 1477-0369 http://tim.sagepub.com/content/36/8/971.abstract 10.1177/0142331214527602 |
| spellingShingle | Sahib, Mouayad Abdulredha Raja Ahmad, Raja Mohd Kamil Loudspeaker nonlinearity compensation with inverse tangent hyperbolic function-based predistorter for active noise control |
| title | Loudspeaker nonlinearity compensation with inverse tangent
hyperbolic function-based predistorter for active noise control |
| title_full | Loudspeaker nonlinearity compensation with inverse tangent
hyperbolic function-based predistorter for active noise control |
| title_fullStr | Loudspeaker nonlinearity compensation with inverse tangent
hyperbolic function-based predistorter for active noise control |
| title_full_unstemmed | Loudspeaker nonlinearity compensation with inverse tangent
hyperbolic function-based predistorter for active noise control |
| title_short | Loudspeaker nonlinearity compensation with inverse tangent
hyperbolic function-based predistorter for active noise control |
| title_sort | loudspeaker nonlinearity compensation with inverse tangent hyperbolic function based predistorter for active noise control |
| url | http://psasir.upm.edu.my/id/eprint/34399/1/Loudspeaker%20nonlinearity%20compensation%20with%20inverse%20tangent%20hyperbolic%20function.pdf |
| work_keys_str_mv | AT sahibmouayadabdulredha loudspeakernonlinearitycompensationwithinversetangenthyperbolicfunctionbasedpredistorterforactivenoisecontrol AT rajaahmadrajamohdkamil loudspeakernonlinearitycompensationwithinversetangenthyperbolicfunctionbasedpredistorterforactivenoisecontrol |