Results 11 to 20 of about 127,881 (313)
Diesel engine fuel injection monitoring using acoustic measurements and independent component analysis [PDF]
, 2010 Air-borne acoustic based condition monitoring is a promising technique because of its intrusive nature and the rich information contained within the acoustic signals including all sources.
Gu, Fengshou +7 more
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Extra-Auditory Effects from Noise Exposure in Schools: Results of Nine Italian Case Studies
Acoustics, 2023 Noise exposure may cause auditory and extra-auditory effects. School teachers and students are exposed to high noise levels which have an impact on perceptual-cognitive and neurobehavioral aspects.
Franco Cotana +17 more
doaj +1 more source
Analysis and Utilization of Reverse Mode Loudspeakers
IEEE Access, 2020 Loudspeakers are designed to radiate sound. However, they can also capture sounds and this microphone-like behavior is called the reverse mode. The paper investigates this backward mechanism by publishing theoretical and practical results.
Gyorgy Kalmar
doaj +1 more source
Hydraulic System Onboard Monitoring and Fault Diagnostic in Agricultural Machine [PDF]
Brazilian Archives of Biology and Technology, 2019 Agricultural Machinery as an off-road vehicle is the backbone of the World agricultural industry. Its main function is to operate as a prime mover and support the power requirements to function the various type of draft implements.
Saurabh Gupta +4 more
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Acoustic measurements and instrumentation [PDF]
The Journal of the Acoustical Society of America, 1976 A few selected topics will be discussed. Each had a major influence in setting a new trend. The discussion will include: the significance of Wente's condenser microphone in freeing acoustic measurements from the constraints of contemporary microphones; the effect of Maxfield and Harrison's paper on the analysis and synthesis of acoustic devices; the ...
openaire +1 more source
Measurement of complex acoustic intensity in an acoustic waveguide [PDF]
The Journal of the Acoustical Society of America, 2013 Acoustic intensity is normally treated as a real quantity, but in recent years, many articles have appeared in which intensity is treated as a complex quantity where the real (active) part is related to local mean energy flow and the imaginary (reactive) part to local oscillatory transport of energy.
Duan, W +3 more
openaire +3 more sources
Quantitative imaging of acoustic reflection and interference [PDF]
, 2015 This paper presents a method for time resolved quantitative imaging of acoustic waves. We present the theoretical background, the experimental method and the comparison between experimental and numerical reconstructions of acoustic reflection and ...
Malkin, Rob +2 more
core +1 more source
Inline Monitoring of Battery Electrode Lamination Processes Based on Acoustic Measurements
Batteries, 2021 Due to the energy transition and the growth of electromobility, the demand for lithium-ion batteries has increased in recent years. Great demands are being placed on the quality of battery cells and their electrochemical properties.
Ruben Leithoff +7 more
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The Acoustics of the Catacombs
Archives of Acoustics, 2014 The catacombs are underground places. This paper reports the results of acoustic measurements carried out inside the catacombs of “San Gennaro” (Naples) and in those one of “San Callisto” (Rome).
Gino IANNACE +2 more
doaj +1 more source
Meteorological effects on the 3D sound propagation inside an inhomogeneous forest area
Meteorologische Zeitschrift, 2016 The influence of trees on sound propagation is currently discussed to reduce the sound exposure near transport infrastructure or industrial areas. This influence is direct due to reflection and scattering at the trees themselves as well as indirect ...
Astrid Ziemann +2 more
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