Industrial noise in the working environment has adverse effects on human hearing; literature and private studies confirm that. It has been determined that significant changes in the hearing threshold level occur in the high frequency audiometry, i.e., in the 8-20 kHz frequency range. Therefore, it is important to determine the effect of ultrasonic noise (10-40 kHz) on the human body in the work...

We introduce a novel method to automatically evaluate Xray computed tomography (CT) images for the purpose of detecting material defects by evaluating the significance of features extracted by first order derivative filters. We determine the noise characteristics of an image using robust estimation methods and compute the noise of the filtered image via error propagation. The significance of th...

A 3D active triangulation scanner is under development at the Department. The project is focusing on the cost-effective realisation, controlled accuracy and easy practical use. The main difficulty is the distortion caused by the noise in the frame buffer. In this publication a noise model will be defined, the method of the noise model validity examination will be drafted. With that a novel line...

While wind turbines have beneficial effects for the environment, they inevitably generate environmental noise. In order to protect residents against unacceptable levels of noise, exposure-response relationships are needed to predict the expected percentage of people annoyed or highly annoyed at a given level of wind turbine noise. Exposure-response relationships for wind turbine noise were deri...

introduction noise pollution is one of the environmental pollution that threats public health to the survival of organisms. urban traffic causes noise pollution as a major factor of air pollution. this is one of the problems of urban citizens. this is also a growing problem that has a potential impact on public health, which is mainly resulted from transport vehicles in the cities and the resid...

improvements in knowledge as well as technology and industrial workers’ exposure to adverse factors have caused more attention to be paid to the workers’ occupational health. according to the report by w.h.o., noise, as one of the most important physical factors of workplace, causes 4 million dollars health damage every day. noise can also reduce the workers’ morale as well as motivation and, c...

Chattering alarms repeatedly make transitions between alarm and non-alarm states without response from operators, and severely deteriorate the performance of industrial alarm systems. Two rules are formulated based on the metrics of alarm durations and intervals to detect chattering alarms caused by random noise and oscillation. An online method is proposed to reduce the number of the chatterin...

In this work, an overview of industrial employees' noise exposure level in five selected processing and manufacturing industries in Ilorin are evaluated and compared. Emphasis is given to noise emitted by individual industrial machinery from the selected industries. Event L(Aeq) and LN cycle were studied to identify the noisy machines and to generate baseline data. Findings show that, hammer mi...