ACTIVE NOISE CONTROL: ITS IMPLEMENTATION & PERFORMANCE
IR@NAL: CSIR-National Aerospace Laboratories, Bangalore
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| Title |
ACTIVE NOISE CONTROL: ITS IMPLEMENTATION & PERFORMANCE
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| Creator |
Shivamurti, M
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| Subject |
Electronics and Electrical Engineering
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| Description |
Active noise control systems based on feedforward approach using filtered-x LMS algorithm for single channel (in a duct) and multi-channel (in an enclosure), are considered. The systems are implemented on a TMS320C30 processor based d_space DSP board and their performances are evaluated. In the case of duct, for the tonal and white noise, a noise reduction of about 32dB and 12dB, respectively are achieved. For a duct with an axial flow fan, using anti-turbulence probes, 7.66dB noise reduction is obtained. For the multi-channel case, a 2 channel system for a typical aircraft cockpit mockup model is considered and a reduction of about 20dB is obtained for a tonal noise.
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| Type |
Conference or Workshop Item
NonPeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://nal-ir.nal.res.in/9203/1/CRANESpap.pdf
Shivamurti, M ACTIVE NOISE CONTROL: ITS IMPLEMENTATION & PERFORMANCE. In: MATLAB workshop, Bangalore. |
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| Relation |
http://nal-ir.nal.res.in/9203/
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