Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/2882
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dc.contributor.authorAi, Y.-
dc.contributor.authorQiu, X.-
dc.contributor.authorHansen, C.-
dc.date.issued2000-
dc.identifier.citationNoise Control Engineering Journal, 2000; 48(4):130-135-
dc.identifier.issn0736-2501-
dc.identifier.urihttp://hdl.handle.net/2440/2882-
dc.description.abstractTurbulent 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.language.isoen-
dc.publisherInst Noise Control Eng-
dc.source.urihttp://dx.doi.org/10.3397/1.2827968-
dc.titleMinimizing wind effects on active control systems for attenuating outdoor transformer noise-
dc.typeJournal article-
dc.identifier.doi10.3397/1.2827968-
pubs.publication-statusPublished-
dc.identifier.orcidHansen, C. [0000-0002-1444-4716]-
Appears in Collections:Aurora harvest 2
Environment Institute publications
Mechanical Engineering publications

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