Zobrazeno 1 - 10
of 2 598
pro vyhledávání: '"Sound pressure level"'
Publikováno v:
Alexandria Engineering Journal, Vol 101, Iss , Pp 125-135 (2024)
The objective of this study is to investigate an acoustic environment based on spatial configurations. To achieve this objective, two types of data were utilized. First, the urban acoustic data was collected from 96 measurements based on equivalent c
Externí odkaz:
https://doaj.org/article/0a00e1a959434cb5831d00a7ccea81d6
Autor:
Masrur Abdul Quader, Md Mostafizur Rahman, Musabber Ali Chisty, Khawla Saeed Al Hattawi, Edris Alam, Md Kamrul Islam
Publikováno v:
Frontiers in Public Health, Vol 12 (2024)
ObjectivesThe purpose of this research was to look at the interrelation between adult health issues in Dhaka and noise pollution.MethodsThe methodology involved a cross-sectional survey conducted in five different land use categories, with a sample s
Externí odkaz:
https://doaj.org/article/1cc13b7b658d4b649b5efa132ff083f3
Autor:
Shahryar Sedighi, Davood Kalantari, Jozef Rédl, Mohammad Kaveh, Mariusz Szymanek, Agata Dziwulska-Hunek
Publikováno v:
Results in Engineering, Vol 23, Iss , Pp 102814- (2024)
Designing an efficient muffler for single-cylinder IC engines is not an easy task due to the limitation in designing a large muffler and the possibility of engine suffocation. In this regard, this research aims to experimentally investigate the feasi
Externí odkaz:
https://doaj.org/article/7a3d836caccd4deda5c122a9324ae265
Publikováno v:
Shanghai yufang yixue, Vol 36, Iss 3, Pp 237-240 (2024)
ObjectiveTo investigate the noise level and influencing factors in metro platforms and station halls， thereby providing the scientific basis for the establishment of hygienic standards.MethodsDuring the morning peak（7：00‒9：30）and off-peak
Externí odkaz:
https://doaj.org/article/b085699842f84ac5b4b35146958d0c3e
Autor:
Fabian Heisterkamp
Publikováno v:
Acoustics, Vol 6, Iss 1, Pp 177-203 (2024)
Determining reliable noise emission values for machinery is key to successfully implement the Sell and Buy Quiet concept. ISO 11202 is a basic noise emission standard to determine the emission sound pressure level of machines outside of special acous
Externí odkaz:
https://doaj.org/article/ad4d2f37efbf406c99bd922cb679fb5e
Autor:
A. R. Davari, S. Hadavand
Publikováno v:
Journal of Applied Fluid Mechanics, Vol 17, Iss 5, Pp 980-988 (2024)
Acoustic measurements were performed using microphone downstream of a 2-D wind turbine blade section in wind tunnel. The experiments have been carried out in both static and oscillatory pitching cases. The latter is usually experienced by the blades
Externí odkaz:
https://doaj.org/article/75d9d0b6527e4a788d1d6b2616374ebe
Autor:
Moien Masoumi, Berker Bilgin
Publikováno v:
IEEE Access, Vol 12, Pp 49937-49946 (2024)
The demand for electrical machines has been spurred by rising fuel costs, technological advancements, and urbanization. Consequently, there is an increased focus on developing machines with greater power density, improved efficiency, and enhanced vib
Externí odkaz:
https://doaj.org/article/2cba039ea80a47368fa168eff1fd0681
Publikováno v:
Buildings, Vol 14, Iss 11, p 3663 (2024)
Floor impact sound insulation is essential for improving living environments and has become a mandatory requirement for green buildings in Southern China. This study introduces an innovative inorganic sound insulation coating technology for enhancing
Externí odkaz:
https://doaj.org/article/f6f37a55ef81406583b31b14a7a91f04
Publikováno v:
Audiology Research, Vol 13, Iss 6, Pp 898-909 (2023)
Cartilage conduction is known widely as a third hearing transmission mechanism after the air and bone conduction methods, and transducers dedicated to the production of cartilage conduction sounds have been developed by several Japanese companies. To
Externí odkaz:
https://doaj.org/article/445cce14917b4311ac3331068741ea63
Publikováno v:
Engineering Computations, 2023, Vol. 40, Issue 3, pp. 637-656.
Externí odkaz:
http://www.emeraldinsight.com/doi/10.1108/EC-12-2021-0736