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Modification of Transmission Line Audible Noise Spectra to Reduce Environmental Impact

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4 Author(s)
Molino, John A. ; National Engineering Laboratory National Bureau of Standards ; Zerdy, Gerald A. ; Lerner, Neil D. ; Harwood, Dane L.

The aversiveness of audible noise from EHV electric transmission lines was evaluated for spectral modifications of 5 different tape-recorded samples. The relative contributions of low-frequency humming and buzzing and of high-frequency hissing and crackling components of the noise were determined. The high-frequency components of the hoise proved more aversive for all five samples to a group of 25 listeners. Therefore, for outdoor or open window listening, engineering efforts should be directed at reducing the high-frequency portion of the audible noise spectrum.

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Power Apparatus and Systems, IEEE Transactions on  (Volume:PAS-100 ,  Issue: 4 )