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Debris Flow Infrasound Recognition Method Based on Improved LeNet-5 Network
Sustainability, 2022 To distinguish debris flow infrasound from other infrasound sources, previous works have used one-dimensional infrasound shapes and parameters. In this study, we converted infrasound signals into two-dimensional signal time–frequency graphs and ...
Dunlong Liu, Xuelei Du
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INFRASOUND MONITORING TECHNOLOGIES
Akustika, 2021On the contrary the infrasonic region of the spectrum is still under investigation. The first study on the presence of the infrasound in air go back to the end of the 19th century and its effects on the human beings have been investigated since the World War II.
Lo Castro F +3 more
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Evolving infrasound measurement and growing infrasound monitoring network
INTER-NOISE and NOISE-CON Congress and Conference Proceedings, 2023Infrasound carries information useful for detecting a strong natural phenomenon such as volcanic eruption and tsunami, which may cause catastrophic disaster. Therefore, infrasound measurement is gathering attention for potential applications in disaster prevention and life protection.
Ryouichi Nishimura +4 more
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A portable infrasound generator
The Journal of the Acoustical Society of America, 2009The rotary subwoofer is a novel low frequency transducer capable of efficiently generating infrasound from a compact source. A field-deployable version of this device may find application as a calibration source for infrasound arrays of the International Monitoring System (IMS) [(2001).
Joseph, Park, James, Robertson
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Physics Today, 2000
Imagine a world in which you could hear not just nearby conversations and the noise of traffic a few blocks away, but also the sound of blasting in a quarry in the next state, the rumblings of an avalanche or volcano a thousand miles away, and the roar of a typhoon halfway around the world. Fortunately, nature has spared our senses from direct exposure
Alfred J. Bedard, Thomas M. Georges
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Imagine a world in which you could hear not just nearby conversations and the noise of traffic a few blocks away, but also the sound of blasting in a quarry in the next state, the rumblings of an avalanche or volcano a thousand miles away, and the roar of a typhoon halfway around the world. Fortunately, nature has spared our senses from direct exposure
Alfred J. Bedard, Thomas M. Georges
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Progress in Biophysics and Molecular Biology, 2007 Definitions of infrasound and low-frequency noise are discussed and the fuzzy boundary between them described. Infrasound, in its popular definition as sound below a frequency of 20 Hz, is clearly audible, the hearing threshold having been measured down to 1.5 Hz. The popular concept that sound below 20 Hz is inaudible is not correct.
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The Journal of the Acoustical Society of America, 1974
The distortion of pure tones (1–16 Hz) caused by the nonlinearities of the middle ear was calculated. It is shown that the slope of the audibility curves for infrasound of Yeowart and Evans could be predicted, thus implying that infrasound might not be heard in the normal sense, but only heard as distortion after being transduced through the middle ear.
Daniel L. Johnson, H. von Gierke
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The distortion of pure tones (1–16 Hz) caused by the nonlinearities of the middle ear was calculated. It is shown that the slope of the audibility curves for infrasound of Yeowart and Evans could be predicted, thus implying that infrasound might not be heard in the normal sense, but only heard as distortion after being transduced through the middle ear.
Daniel L. Johnson, H. von Gierke
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Infrasound radiation of cyclones
The Journal of the Acoustical Society of America, 2005Tropical cyclones produce strong perturbations of atmosphere and the ocean surface accompanied by acoustical radiation. Infrasonic signals in the 0.1−0.5 frequency band can be observed at distances of thousands of miles from the cyclone. The effect of infrasound radiation is connected apparently to the interaction of the counter-propagating sea-surface
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The Journal of the Acoustical Society of America, 2022
The results of study of temporal variations of the characteristics of infrasound (amplitudes, coherences, grazing angles, azimuths and horizontal phase speeds) detected during a passage of warm and cold fronts through the networks of microbarometers in the Moscow region are presented.
Igor P. Chunchuzov +3 more
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The results of study of temporal variations of the characteristics of infrasound (amplitudes, coherences, grazing angles, azimuths and horizontal phase speeds) detected during a passage of warm and cold fronts through the networks of microbarometers in the Moscow region are presented.
Igor P. Chunchuzov +3 more
openaire +1 more source