Sound Research WIKINDX

WIKINDX Resources

Scholkmann, F. (2019). Exposure to high-frequency sound and ultrasound in public places: Examples from Zurich, Switzerland. Acoustics, 1(4), 816–824. 
Added by: Mark Grimshaw-Aagaard (11/7/23, 12:52 PM)   
Resource type: Journal Article
Language: en: English
DOI: 10.3390/acoustics1040048
BibTeX citation key: Scholkmann2019
Email resource to friend
View all bibliographic details
Categories: General
Keywords: Ultrasound
Creators: Scholkmann
Collection: Acoustics
Views: 7/17
"The public is unknowingly exposed to very high-frequency sound (VHFS; 11.2–17.8 kHz) and ultrasound (US; >17.8 kHz) signals in air in public places, as evidenced by previously published reports. The present report provides evidence for the presence of VHFS/US signals in the air at public places in Zurich, Switzerland. The analysis of the signals measured revealed that they: (i) contain one, two or multiple frequencies; (ii) comprise frequencies ranged from 15.5 kHz to 36.0 kHz; (iii) were either quasi constant in their amplitude or exhibit a clear amplitude modulation; and (iv) were in their characteristics (frequencies, modulation, intensity) specific for each place. Based on the signal characteristic it is likely that the signals are generated by public-address voice-alarm (PAVA) systems. The work presented: (i) documents the presence of VHFS/US signals at public places in Zurich, possibly caused by PAVA systems; and should (ii) show that is easily possibly to measure the signals with an affordable measurement equipment as a “citizen scientist”, and stimulate others also to measure and analyse VHFS/US signals with this citizen scientist approach in other cities worldwide. Due to the possible negative health-related effects of a human exposure to VHFS/US signals, further research is needed to document VHFS/US signals at public places and to evaluate biological effects of this exposure with laboratory studies."
WIKINDX 6.7.2 | Total resources: 1280 | Username: -- | Bibliography: WIKINDX Master Bibliography | Style: American Psychological Association (APA)