Shivamurti, M ACTIVE NOISE CONTROL: ITS IMPLEMENTATION & PERFORMANCE. In: MATLAB workshop, Bangalore.
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Abstract
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.
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Subjects: | ENGINEERING > Electronics and Electrical Engineering |
| Depositing User: | Mr M shivamurti |
| Date Deposited: | 08 Jun 2011 08:18 |
| Last Modified: | 08 Jun 2011 08:18 |
| URI: | http://nal-ir.nal.res.in/id/eprint/9203 |
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