Results 271 to 280 of about 3,066,557 (335)

Ultra Low Frequency Noise Generator

Transactions of the Society of Instrument and Control Engineers, 1967
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Vestibular short-latency evoked potential abolished by low-frequency noise exposure in rats.

J Neurophysiol, 2018
Stewart CE, Kanicki AC, Altschuler RA, King WM.   +3 more
europepmc   +1 more source

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New Suppression Technology for Low-Frequency Noise in Desert Region: The Improved Robust Principal Component Analysis Based on Prediction of Neural Network

IEEE Transactions on Geoscience and Remote Sensing, 2020
Lots of low-frequency noise including random noise and surface waves seriously reduces the quality of desert seismic data. However, the suppression for desert low-frequency noise faces three main problems: nonstationary and non-Gaussian of random noise ...
Xintong Dong, T. Zhong, Yue Li
semanticscholar   +3 more sources

Low-frequency 1/f noise in graphene devices.

Nature Nanotechnology, 2013
Low-frequency noise with a spectral density that depends inversely on frequency has been observed in a wide variety of systems including current fluctuations in resistors, intensity fluctuations in music and signals in human cognition.
A. Balandin
semanticscholar   +3 more sources

Low-Frequency Noise Suppression Method Based on Improved DnCNN in Desert Seismic Data

IEEE Geoscience and Remote Sensing Letters, 2019
High-quality seismic data are the basis for stratigraphic imaging and interpretation, but the existence of random noise can greatly affect the quality of seismic data.
Yuxing Zhao, Yue Li, Xintong Dong, Baojun Yang   +3 more
semanticscholar   +1 more source

Desert low-frequency noise suppression by using adaptive DnCNNs based on the determination of high-order statistic

Geophysical Journal International, 2019
The importance of low-frequency seismic data has been already recognized by geophysicists. However, there are still a number of obstacles that must be overcome for events recovery and noise suppression in low-frequency seismic data.
Xintong Dong, Yue Li, Baojun Yang
semanticscholar   +1 more source

Analyzing motorcycle low-frequency noise

Journal of Theoretical and Computational Acoustics, 2022
This paper presents analyses of the 3D acoustic fields generated by motorcycles at very low frequencies ([Formula: see text] Hz) at the idle speed and during sudden acceleration. Diagnosis and analyses of sound sources at low frequencies have always been a significant challenge because the directivity of low-frequency sound is very poor.
Yazhong Lu, Lingguang Chen, Sean F. Wu, Jingyan Hu, Huijun Li   +4 more
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Low-frequency noise thresholds

Journal of Sound and Vibration, 1969
Abstract The absolute threshold of hearing for octave bands of noise with centre frequencies from 125 to 4 Hz has been determined. The results show that the noise threshold behaves in a similar fashion to the tone threshold, but below 32 Hz noise thresholds are more sensitive by a small but significant amount. A hypothesis is advanced that from about
N.S. Yeowart, M.E. Bryan, W. Tempest
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Low-frequency noise fields

The Journal of the Acoustical Society of America, 1986
Since the classic paper of Wenz [J. Acoust. Soc. Am. 34, 1936 (1962)], ambient noise has been an extensively studied phenomena. Morris [SIO Ref. 75-34, MPL/Scripps (1975)] emphasized the importance of ships as their signals are enhanced when they cross over seamounts or proceed over the continential slopes. Wagstaff [J. Acoust. Soc. Am. 69, 1009 (1981)]
W. M. Carey, R. A. Wagstaff
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