Minimizing wind effects on active control systems for attenuating outdoor transformer noise
| dc.contributor.author | Ai, Y. | |
| dc.contributor.author | Qiu, X. | |
| dc.contributor.author | Hansen, C. | |
| dc.date.issued | 2000 | |
| dc.description.abstract | Turbulent pressure fluctuations resulting from wind blowing over a microphone can result in significant distortion of the acoustic signal output from the microphone. This distortion can have a significant detrimental impact on an active noise cancellation system used to reduce the noise radiated by an outdoor source such as an electrical power transformer. Even using a band pass digital filter in the active noise canceling electronics is ineffective because the large wind-induced signal effectively reduce the dynamic range of A/D converters. Here the characteristics of wind-induced noise and standard foam windscreens are analyzed and the effectiveness of a high pass filter together with a foam windscreen for reducing the effect of wind-induced signals are evaluated. Combination of a windscreen with a high pass filter of appropriate order is shown to increase the signal to noise ratio of the transformer sound by about 20 dB over that achieved with a windscreen only. | |
| dc.identifier.citation | Noise Control Engineering Journal, 2000; 48(4):130-135 | |
| dc.identifier.doi | 10.3397/1.2827968 | |
| dc.identifier.issn | 0736-2501 | |
| dc.identifier.orcid | Hansen, C. [0000-0002-1444-4716] | |
| dc.identifier.uri | http://hdl.handle.net/2440/2882 | |
| dc.language.iso | en | |
| dc.publisher | Inst Noise Control Eng | |
| dc.source.uri | https://doi.org/10.3397/1.2827968 | |
| dc.title | Minimizing wind effects on active control systems for attenuating outdoor transformer noise | |
| dc.type | Journal article | |
| pubs.publication-status | Published |