Заець В.П. «Зниження шуму шумозахисними екранами» Восточно-Европейский журнал передовых технологий, 6, № 10, с. 25-33 (2012)

Рассмотрен вопрос точного решения двухмерной задачи методом частичных областей об определении акустического поля вокруг шумозащитного экрана, что стоит на акустически жесткой поверхности, при этом источником звука является бесконечный по длине цилиндр малых волновых размеров, работающий на нулевой моде. The article concerns the exact solution of the two-dimensional problem by the partial areas techniques of determining of the acoustic field around the soundproof screen, which is located at the acoustically hard surface. The sound source is an interminable cylinder of small wave sizes, working at zero mode. There is an analysis of the effect of certain parameters of the screen (height, slope angle), parameters of the sound source (frequency, distance to the screen), and the impact of the relief (slope angle of the half-hard surface to the screen) on the efficiency of noise reduction. For the first time there is a study of the nonmonotonic behavior of the screen field efficiency in the acoustic shadow, which is a significant factor in the development of engineering methods of screen efficiency calculation. The directions of the maximum and minimum noise reduction behind the screen, and the influence of certain parameters on them were determined.The results may be useful for engineers and scientists working in the field of acoustic ecology and noise reduction. The results obtained allow us to estimate the efficiency of already created soundproof screens as well as those that are only being designed. Ключевые слова: шумозащитный экран, цилиндрический источник звука, уровень звукового давления, эффективность.

Котенко С.Г. «Измерение акустических свойств шумозащитного экрана в г.Харькове» Восточно-Европейский журнал передовых технологий, 6, № 10, с. 64-67 (2012)

Рассмотрен вопрос измерения эффективности шумозащитного экрана, влияние шума транспортного потока на здоровье человека, произведен анализ теоретических расчетов и экспериментальных данных, и на их основе предложены методы по повышению шумозащитных свойств экранов. The article considers the question of measurement of the efficiency of noise protection screen, the impact of traffic noise on human health, the analysis of the theoretical calculations and experimental data. On the basis of theoretical calculations and experimental data we suggested the methods of improvement of noise protection properties of screens. The acoustic ecology research is important, because on the basis of such measurements it is possible to map the noise of the city, to mark out the areas with high sound pressure, which need to be secured against such a harmful influence; and areas with a low sound pressure, the so-called "quiet zones" – the most favorable for recreation and life. There are a lot of works and researches on the harmful effects of noise. The data presented in the article show the efficiency of noise protection screens in urban areas and along highways.