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The Journal of the Acoustical Society of America, 2001
At the present developed procedures of evaluation of annoyance of low frequency noise (LFN) on human and occupational health are based on international standards, ISO 7196 and ISO 9612. These standards are based on levels of thresholds of the human auditory system and subjective observations of vibrations of human body impacted by infrasound waves.
Ryszard Panuszka, Zbigniew Damijan
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At the present developed procedures of evaluation of annoyance of low frequency noise (LFN) on human and occupational health are based on international standards, ISO 7196 and ISO 9612. These standards are based on levels of thresholds of the human auditory system and subjective observations of vibrations of human body impacted by infrasound waves.
Ryszard Panuszka, Zbigniew Damijan
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1998
Ultrasound and infrasound differ from “ordinary” sounds in three distinct ways that influence all the considerations of this chapter. The first and most obvious characteristic of these sound types is that, by definition, they are “extreme” frequencies that fall outside the normal response curve for the human ear (see Figure 1) and are therefore ...
J. D. Pye, W. R. Langbauer
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Ultrasound and infrasound differ from “ordinary” sounds in three distinct ways that influence all the considerations of this chapter. The first and most obvious characteristic of these sound types is that, by definition, they are “extreme” frequencies that fall outside the normal response curve for the human ear (see Figure 1) and are therefore ...
J. D. Pye, W. R. Langbauer
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Trauma of the Ear from Infrasound
Acta Oto-Laryngologica, 1982Twenty-eight chinchillas received continuous or intermittent infrasound (1, 10, 20 Hz) at 150, 160, or 170 dB SPL; there were 7 controls. Serial sections of the temporal bones were examined using light microscopy. Pathologies noted were tympanic membrane perforation, stapes subluxation, bleeding from the middle ear mucosa and tensor tympani, strial ...
D J, Lim +3 more
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A meteor infrasound recording system
ICASSP '76. IEEE International Conference on Acoustics, Speech, and Signal Processing, 2005The National Research Council of Canada has established an infrasonic microphone array near Saskatoon, Saskatchewan, to detect acoustic waves generated by large meteors during their entry into the atmosphere. The system consists of four ceramic microphones modified for an extended low-frequency response and fitted with noise-reducing pipes, and ...
Michael D. Watson +2 more
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Journal of Atmospheric and Terrestrial Physics, 1971
Abstract We consider atmospheric pressure variations in the period range from a few seconds to a few minutes. These pressure fluctuations arise 1. (a) from local hydrodynamic effects which are estimated; 2. (b) from nonpropagating pressure effects associated, for example, with a jet stream; 3.
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Abstract We consider atmospheric pressure variations in the period range from a few seconds to a few minutes. These pressure fluctuations arise 1. (a) from local hydrodynamic effects which are estimated; 2. (b) from nonpropagating pressure effects associated, for example, with a jet stream; 3.
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Explosion localization via infrasound
The Journal of the Acoustical Society of America, 2009Two acoustic source localization techniques were applied to infrasonic data and their relative performance was assessed. The standard approach for low-frequency localization uses an ensemble of small arrays to separately estimate far-field source bearings, resulting in a solution from the various back azimuths. This method was compared to one developed
Curt A L, Szuberla +2 more
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Microseism and infrasound generation by cyclones
The Journal of the Acoustical Society of America, 2003A two-dimensional cylindrical shear-flow wave theory for the generation of microseisms and infrasound by hurricanes and cyclones is developed as a linearized theory paralleling the seminal work by Longuet-Higgins which was limited to one-dimensional plane waves. Both theories are based on Bernoulli’s principle.
Samuel P, Bowen +4 more
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Detecting and characterizing infrasound signals with optical fiber infrasound sensors
The Journal of the Acoustical Society of America, 2005Optical Fiber Infrasound Sensors (OFIS) are long compliant tubes wrapped with two optical fibers that interferometrically measure the differential pressure variation along the length of the tube. Because each sensor averages spatially along the length of the tube, the frequency response of the recorded pressure variation is a function of the ...
Kristoffer Walker +4 more
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Coherency of infrasound studied with a large aperture infrasound array in the Netherlands
The Journal of the Acoustical Society of America, 2008A large aperture infrasound array (LAIA) is being constructed in the Netherlands as geophysical part of an astronomical low frequency array, i.e., the LOFAR project. This array extends the detection capabilities of infrasound up to the mHz range, including acoustic-gravity and gravity waves as well.
Johan Mentink, Laeslo G. Evers
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