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Published on: May 9, 2020
Subjective rating of the jet noise crackle percept
Kent L Gee1, Paul B Russavage1, Tracianne B Neilsen1
1Department of Physics and Astronomy, Brigham Young University, Provo, Utah 84602, USA kentgee@byu.edu, pau616@gmail.com, tbn@byu.edu, hales.swift@gmail.com, aaron.burton.vaughn@gmail.com.
Abstract:
Results of the first formal perceptual study of jet crackle are presented. Prior studies examined noise waveform properties believed to be linked to the jet crackle percept from a physics perspective or using signal processing and informal subjective evaluation. This investigation involves 31 listeners that rated 15 jet noise waveforms with a category subdivision scaling test. Results reveal a strong log-linear correlation between the pressure waveform time derivative's skewness and crackle rating. A regression analysis establishes practical derivative skewness bounds for a five-point categorical crackle scale and results in the suggested definition of the crepit as the unit of crackliness.
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