Results 201 to 210 of about 4,649,450 (252)
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1980
In a microwave transmission system, a signal is sent from a transmitting antenna to a receiving antenna. We have seen that only a very small part of the transmitted power is picked up by the receiving antenna. The receiving antenna also picks up as noise random electromagnetic radiation from any body that lies within its beamwidth, and some noise from ...
John R. Pierce, Edward C. Posner
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In a microwave transmission system, a signal is sent from a transmitting antenna to a receiving antenna. We have seen that only a very small part of the transmitted power is picked up by the receiving antenna. The receiving antenna also picks up as noise random electromagnetic radiation from any body that lies within its beamwidth, and some noise from ...
John R. Pierce, Edward C. Posner
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Noise sources in magnetooptic recording
Applied Optics, 1988This paper investigates nonwhite noise sources important in magnetooptic recording. These noise sources are experimentally characterized, and their contribution is quantified across a 20-MHz bandwidth.
B I, Finkelstein, W C, Williams
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Impulsive noise characterization at source
2008 1st IFIP Wireless Days, 2008The noise characteristics of an indoor powerline network strongly influence the link capability to achieve high data rates. The appliances shared with PLC modems in the same powerline network generate noises, among them the impulsive ones which are the main source of interference which causes signal distortions leading to bit errors while data ...
Mohamed Tlich +3 more
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Estimating the voice source in noise
Interspeech 2012, 2012Estimation of the glottal source has applications in many areas of speech processing. Therefore, a noise-robust automatic source estimation algorithm is proposed in this paper. The source signal is estimated using a codebook search approach. The glottal area waveforms extracted from high-speed recordings of the glottis is converted to the glottal flow ...
Gang Chen 0009 +3 more
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Electric Motor Noise: Control of Noise at the Source
American Industrial Hygiene Association Journal, 1970The desired output of most electric motors is mechanical torque. Unfortunately, this output is usually accompanied by undesirable outputs such as heat and noise. The noise produced by electric motors (and by other machinery) is rapidly becoming the subject of much concern to designers and operators of industrial equipment as well as to many other ...
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Tinnitus as a Source of Internal Noise
Journal of Speech, Language, and Hearing Research, 1986For 7 patients with sensorineural hearing loss and tinnitus, pitch and loudness matches were made to the tinnitus. These matches were followed by measurement of three psychometric functions (probability of a correct response as a function of signal level) for pure tones, one in the presumed tinnitus region (i.e., at the average frequency matching the ...
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Stability measurements on noise sources
IEEE Transactions on Instrumentation and Measurement, 2001We report results of stability and repeatability measurements performed on a selection of different noise sources for selected frequencies between 12 GHz and 26.5 GHz. Measurements cover intervals classified as intermediate term (about 1 week) and long term (about 1 year or more).
J. Randa +2 more
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1994
Abstract A typical scanning force microscope consists of a lever and its force-sensing tip, a bimorph, and a tip deflection probe with its amplifier, each of which contributes noise to the system. We present the primary sources of laser-diode noise (Petermann 1988 and Agrawal and Dutta 1986) including shot, intensity, and phase noise ...
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Abstract A typical scanning force microscope consists of a lever and its force-sensing tip, a bimorph, and a tip deflection probe with its amplifier, each of which contributes noise to the system. We present the primary sources of laser-diode noise (Petermann 1988 and Agrawal and Dutta 1986) including shot, intensity, and phase noise ...
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A transient noise model for frequency-dependent noise sources
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems, 2003Transient noise simulations are beneficial to design analog circuits, such as peak detection circuits for detecting very small signal levels, or circuits having large gains to be saturated by noise signals. Though the noise characteristics of these circuits can be simulated with SPICE in frequency domain, the dynamic noise performance cannot be shown ...
Joon-Jea Sung, Guen-Soon Kang, Suki Kim
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Power Transformer as a Source of Noise
International Journal of Occupational Safety and Ergonomics, 2007This article presents selected results of analyses and simulations carried out as part of research performed at the Central Institute of Labor Protection - the National Research Institute (CIOP-PIB) in connection with the development of a system for active reduction of noise emitted by high power electricity transformers.
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