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Leighton, T. G., Lineton, B., Dolder, C., & Fletcher, M. D. (2020). Public exposure to airborne ultrasound and very high frequency sound. Acoustics Today, 16(3), 17–26. 
Added by: Mark Grimshaw-Aagaard (11/28/22, 8:50 AM)   Last edited by: Mark Grimshaw-Aagaard (12/6/22, 10:58 AM)
Resource type: Journal Article
Peer reviewed
DOI: 10.1121/at.2020.16.3.17
BibTeX citation key: Leighton2020
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Categories: General
Keywords: Hearing, Ultrasound
Creators: Dolder, Fletcher, Leighton, Lineton
Publisher: Acoustical Society of America (Melville, NY)
Collection: Acoustics Today
Views: 1/39
Abstract
"Over the last decade, members of the public have complained of “high-pitched” sounds in public places causing adverse effects (e.g., headaches). Their reports were dismissed by colleagues, family, and friends, who could hear nothing, and by health care professionals and experts for a range of reasons, including assertions that airborne ultrasound could not affect humans because it mostly reflects off the skin and because the ultrasonic intensities in air are low. Those complaining were told that even if such sounds existed, the sounds could not be ultrasonic because “humans cannot hear above 20 kHz.” Faced with universal dismissals, in 2015, the concerned individuals consulted one of the authors, Professor Leighton. He published evidence that such tones existed (Leighton, 2016a), provided methods for the public to detect them (Leighton, 2016a,b), identified a range of commercially available sources and others in development, outlined why the regulatory framework needed revisiting (Leighton, 2016a), and cast doubt on assertions that these high-frequency sources cannot cause adverse effects (Leighton 2017). Fletcher et al. (2018a,b) conducted human trials and interest grew around the world, including in a special issue in The Journal of the Acoustical Society of America (Leighton, 2018). International interest in this topic further increased with claims of ultrasonic attacks on the Cuban embassy (Leighton, 2018). A scheme by which the public can distinguish such tones from, say, tinnitus was provided, as illustrated in the following case study."
  
Paraphrases
p.20  

Provides a map of London showing peaks in the range 17.4–22.4kHz measured c.2017 by public smartphones (Fletcher, Jones, White, Dolder, Lineton, & Leighton 2018).



Fletcher, M. D., Jones, S. L., White, P. R., Dolder, C. N., Lineton, B., & Leighton, T. G. (2018). Public exposure to ultrasound and very high-frequency sound in air. The Journal of the Acoustical Society of America, 144(4), 2554–2564.   Added by: Mark Grimshaw-Aagaard
Keywords:   Hearing Ultrasound
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