Results 11 to 20 of about 305,424 (300)
Ambient noise levels in audiometric test rooms [PDF]
The Journal of the Acoustical Society of America, 1993 Octave-band ambient noise levels measured in 136 diagnostic and 202 industrial audiometric test rooms were compared with the maximum permissible ambient noise levels (MPANLs) specified in ANSI S3.1-1991. The mean octave-band ambient noise levels for the diagnostic rooms were less than the ears covered but higher than the ears not covered MPANLs for ...
Tom Frank, Dennis L. Williams
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Influence analysis of observation mode for seismic station on background noise
地震科学进展, 2023 Three seismic stations in Chongqing area have been reconstructed. And the type of station base is changed from deep pit observation to surface observation. The PSD and PDF of the three stations before and after reconstruction were calculated respectively,
Yayun Yang +3 more
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Depth Spatial Characterization of Marine Environmental Noise in the Zengmu Basin
Journal of Marine Science and Engineering, 2023 Based on the measured data obtained from an array of optical fiber hydrophones, this paper analyzes and interprets the depth spatial spectrum characteristics, correlation characteristics, and vertical directionality of marine environmental noise in the ...
Xiaoming Cui +5 more
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An Assessment of Environmental RF Noise Due to IoT Deployment
Sensors, 2023 The advent of the Internet of Things (IoT) has contributed to an increase in the production volume of RF-featured equipment. According to statistics from the literature, the IoT industry will soon deploy billions of products.
Dominique G. K. Ingala +2 more
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Separation of Ambient Radio Noise and Radio Signals Received via Ionospheric Propagation
Atmosphere, 2023 Systems for atmospheric research and wireless communication use the High Frequency (HF) radio spectrum. At these frequencies, typically up to 20 MHz, the ambient electromagnetic noise is stronger than the noise generated by the receiver itself, thereby ...
Ben A. Witvliet +4 more
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Ambient noise levels in the chemotherapy clinic
Noise and Health, 2011 Many of the drugs used for chemotherapy treatments are known to be ototoxic, and can result in permanent hearing threshold shifts. The degree of ototoxic damage can be influenced by many factors including dosage, duration of exposure, genetics, and coadministration with other ototoxic agents.
Gladd, Dana K, Saunders, Gabrielle H
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A Complexity-Based Approach for the Detection of Weak Signals in Ocean Ambient Noise
Entropy, 2016 There are numerous studies showing that there is a constant increase in the ocean ambient noise level and the ever-growing demand for developing algorithms for detecting weak signals in ambient noise.
Shashidhar Siddagangaiah +6 more
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Is ambient noise tomography across ocean basins possible? [PDF]
, 2006 International audienceBased on year-long cross-correlations of broad-band seismic records obtained at sixty-six stations within or adjacent to the Pacific Basin, we show that broad-band ambient noise is observed to propagate coherently between island ...
H. Ritzwoller, Michael +2 more
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AMBIENT SEISMIC NOISE FOOTPRINTS AND SPECTRA IN THE MIDDLE BENUE TROUGH, NIGERIA
Earth Science Malaysia, 2019 Ambient noise was analysed from a two-dimensional (2D) seismic data acquired in the Middle Benue Trough, Nigeria for the purpose of characterizing the ambient seismic noise.
Clifford N. C. Mbachi +5 more
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Frontiers in Ecology and Evolution, 2020 Optimal mate choice based on the assessment of communication signals can be constrained by multiple sources of noise. One well-known impediment to acoustically guided mating decisions is the ambient noise created by multiple signaling individuals in ...
Jessie C. Tanner +2 more
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