نتایج جستجو برای: industrial noise
تعداد نتایج: 339217 فیلتر نتایج به سال:
The use of networked control systems is very modern in industrial control. The evolution of computer networks, the increase of transfer speed and noise resistance caused the installation of Ethernet technologies in industry more frequent [1]. The most frequently used standard for interconnecting Matlab with industrial devices is the OPC standard. Our goal was to design a Matlab toolbox for comm...
ABSTRACT Active noise control is a noise reduction technique introducing a canceling anti-noise wave. Recently, it is widely used in industrial operations, manufacturing, and consumer products. In many cases, periodic noise occurs because most applications include engines, compressors, motors, fans, and propellers which have reciprocating motion. The noise usually contains tones at the fundamen...
Industrial machines like punching machines and presses can generate structure-borne impact noise, with noise levels exceeding the tresholds, imposed by legal regulations on noise emission. This paper presents an approach of non-collocated active structural acoustic control of transient noise, produced by a repetitive impact excitation. Although there is a significant difference in nature betwee...
The reliability of Bluetooth is discussed from technical point of view with respect of noise immunity and performance under influence of external disturbances. The emphasis is on possible industrial applications of Bluetooth technology.
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Background: Noise is one of the detrimental factors of industrial health. Noise induced hearing loss is one the most occupational disease in the world. The purpose of this research was to study workers-related factors about using Hearing Protection Device (HPD) of textile factories in Yazd based on Theory of Planned Behavior (TPB). Methods: In this cross-sectional analytical study, 134 workers...
Industrial automation with speech control functions is generally installed with a speech recognition sensor which is used as an interface for users to articulate speech commands. However, recognition errors are likely to be produced when background noise surrounds the command spoken into the speech recognition microcontrollers. In this paper, a speech enhancement strategy is proposed to develop...
IEEE 802.15.4a impulse radio-time hopping ultra wide band (IR-TH UWB) physical layer, due to small duty cycle and very short pulse widths is robust against multipath propagation. However, scattering and reflections with the large number of obstacles in indoor channel environments, give rise to dense multipath fading. It imposes serious problem to optimum Rake receiver architectures, for which v...
The objectives of the study were to monitor and assess the road traffic noise in its spatial-temporal aspect in an urban area. The paper discusses the observations, results and their interpretation based on the study. Noise recordings from site, collected from April 2006 to March 2006, were used for statistical analysis and generation of various noise indices. Noise maps were also created for i...
BACKGROUND Noise-induced hearing loss (NIHL) is one of the most common occupational illnesses. Most of the studies on NIHL were conducted at high noise levels that people are rarely exposed to but in industries. The function of the outer hair cells (OHCs) is impaired after exposure to industrial noise. Distortion product otoacoustic emissions (DPOAEs) are useful in examination of noise-induced ...
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