Related DatabasesWeb of Science You must be logged in with an active subscription to view this.Article DataHistorySubmitted: 14 September 2020Accepted: 19 February 2021Published online: 10 May 2021Keywordselectromagnetic waves, ambient noise, metamaterial, wireless communicationAMS Subject Headings78A48, 35R60, 35Q61, 78A55Publication DataISSN (print): 0036-1399ISSN (online): 1095-712XPublisher...

background and aims: since using city power for welding process is not allowed, diesel generators are used as a power supply in construction industries. they could be introduced as a main source of noise pollution. the purposes of this study were to assess and control noise pollution produced by construction diesel generators in hamadan, iran. methods: in this descriptive, cross-sectional study...

An adaptive-passive quarter-wave tube resonator silencer was experimentally tested using recorded in-duct reciprocating engine exhaust noise. The exhaust noise was re-played through a loudspeaker attached to one end of a duct, and the adaptive passive system was able to track changes in engine speed and provide attenuation of the noise at the fundamental firing frequency of the engine and the t...

Abstract Fluid-borne noise (FBN) is a major contributor to structure-borne (SBN) and air-borne (ABN) in hydraulic fluid power systems could lead increased fatigue system components. FBN caused by the unsteady flow generated pumps motors propagates through resulting SBN ABN. New technologies such as digital switched converters also generate unavoidable FBN. This article reports on novel integrat...

this paper is mainly focused on noise pollution problems related to the use of wind turbines. the installed turbines are vestas v52 and the farm map under study is a typical rural area in south italy, in which a wind farm has been recently installed and made operative. since the area is rural and the number of vehicles per hour is negligible, noise emitted by roads does not affect the predictio...

in many active noise control (anc) applications, an online secondary pathmodelling method that uses a white noise as a training signal is required. this paperproposes a new feedback anc system. here we modified both the fxlms and thevss-lms algorithms to raised noise attenuation and modelling accuracy for theoverall system. the proposed algorithm stops injection of the white noise at theoptimum...

This paper presents a novel speech enhancement approach for performing noise reduction in severely disturbed environments. A small microphone for communication purposes is placed inside the external auditory canal to pick up the speech signal originating from the speech production organ. The speech enhancement is achieved by using three different noise reduction methods: High frequencies are at...