Results 301 to 310 of about 2,264,525 (339)
An atomic clock synchronized versatile all-in-one digital 'LockBox'. [PDF]
Sci RepJohnson S +5 more
europepmc +1 more source
An adaptive extended Kalman filter observer-for permanent magnet synchronous motor position sensorless control systems. [PDF]
Sci RepYingjun S, Zhenglong W, Yuanyuan F.
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Dual-channel pulse-dye densitometry can enable correction of fluorescent targeted and control agent plasma input function differences for quantitative paired-agent molecular imaging: a simulation study. [PDF]
J Biomed OptRounds CC +5 more
europepmc +1 more source
Identification and control of booming noise of thin-walled metal plates of commercial vehicle body subjected to high-speed airflow. [PDF]
PLoS OneWang Y, Zhang B, Su X, Zang L.
europepmc +1 more source
Inflection points in hearing deterioration: clinical characteristics of NIHL from steady-state noise exposure. [PDF]
Int J Occup Med Environ HealthFan B +6 more
europepmc +1 more source
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Journal of Aircraft, 1976
Experiments have been conducted on axisymmetric shallow cavity flows with the aim of investigating methods to modify cavity shear flows such that cavity noise may be reduced. The experiments indicate the presence of large gross lateral motion of the shear layer close to the downstream cavity corner which, on interaction with it, results in production ...
P. F. Massier, V. Sarohia
openaire +2 more sources
Experiments have been conducted on axisymmetric shallow cavity flows with the aim of investigating methods to modify cavity shear flows such that cavity noise may be reduced. The experiments indicate the presence of large gross lateral motion of the shear layer close to the downstream cavity corner which, on interaction with it, results in production ...
P. F. Massier, V. Sarohia
openaire +2 more sources
Noise News International, 1993
Active noise control exploits the long wavelengths associated with low frequency sound. It works on the principle of destructive interference between the sound fields generated by the original primary sound source and that due to other secondary sources, acoustic outputs of which can be controlled.
Philip A. Nelson, Stephen J. Elliott
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Active noise control exploits the long wavelengths associated with low frequency sound. It works on the principle of destructive interference between the sound fields generated by the original primary sound source and that due to other secondary sources, acoustic outputs of which can be controlled.
Philip A. Nelson, Stephen J. Elliott
openaire +3 more sources
The Journal of the Acoustical Society of America, 2021
ASHRAE Ch. 49 is a leading industry reference in noise control, providing extensive guidance on background noise levels, as well as practical noise control methods. The design guideline for background noise criteria in laboratories ranges from NC 35 to 50 depending on the expected activity.
William Rosentel, Peter Holst
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ASHRAE Ch. 49 is a leading industry reference in noise control, providing extensive guidance on background noise levels, as well as practical noise control methods. The design guideline for background noise criteria in laboratories ranges from NC 35 to 50 depending on the expected activity.
William Rosentel, Peter Holst
openaire +1 more source
2009
So far we have dealt with sound sources that convert electric energy into mechanic/acoustic energy. These sound sources are mainly used to radiate desired sounds because the mechanic/acoustic signals are easily controlled by the electric ones. In addition to desired sound, there is undesired sound that one would reduce or even eliminate if possible ...
Jens Blauert, Ning Xiang
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So far we have dealt with sound sources that convert electric energy into mechanic/acoustic energy. These sound sources are mainly used to radiate desired sounds because the mechanic/acoustic signals are easily controlled by the electric ones. In addition to desired sound, there is undesired sound that one would reduce or even eliminate if possible ...
Jens Blauert, Ning Xiang
openaire +2 more sources
Active noise control of transformer noise
Proceedings of EMPD '98. 1998 International Conference on Energy Management and Power Delivery (Cat. No.98EX137), 2002Acoustic noise generated by transformers is a serious form of environmental pollution and it affects people's lives. Different methods have been suggested to reduce this form of pollution. This paper describes the implementation of a DSP based active noise control (ANC) system. Based on the theoretical result, different noise control systems were built
V. Chan +4 more
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