Results 21 to 30 of about 8,993,179 (354)

Measurements of Room Acoustic and Thermo-Hygrometric Parameters—A Case Study

open access: yesApplied Sciences, 2023
Equipment, sound sources, operators, microphone placement, calculation techniques, and thermal–humidity measurement conditions all have an impact on the measurement of impulse responses when several channels are present.
N. Granzotto, Ruoran Yan, L. Tronchin
semanticscholar   +1 more source

Acoustic monitoring of engine fuel injection based on adaptive filtering techniques [PDF]

open access: yes, 2010
Diesel engines injection process is essential for optimum operation to maintain the design power and torque requirements and to satisfy stricter emissions legislations. In general this process is highly dependent upon the injection pump and fuel injector
Gu, Fengshou   +11 more
core   +1 more source

First record of Vitreorana ritae (Anura, Centrolenidae) for southern Amazonia inferred from molecular, reproductive and acoustic evidence

open access: yesCaldasia, 2020
Frogs of the family Centrolenidae are adapted to live at high altitudes, and so it is not surprising that their greatest diversity is in the Andes mountain range.
Marcos Penhacek   +6 more
doaj   +1 more source

Measuring acoustic habitats [PDF]

open access: yes, 2015
NDM was part-funded by an EPSRC Doctoral Training Award (No. EP/P505399/1). MPJ and PLT were supported by Marine Alliance for Science and Technology Scotland (MASTS) and MPJ by a Marie Curie CIG Award.Many organisms depend on sound for communication ...
Nathan D. Merchant   +20 more
core   +1 more source

Prediction of room acoustical parameters [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1991
During a 6-yr period, detailed room acoustical measurements have been carried out in 35 halls in Denmark and in other European countries. By subjecting these data to statistical analyses, it has been possible to confirm old and establish new relationships between design variables and the position-averaged acoustical data.
openaire   +2 more sources

Optimization of Sound Absorption Performance of OGFC Asphalt Mixture Based onAcoustic Parameters [PDF]

open access: yesZhengzhou Daxue xuebao. Gongxue ban
In the phenomenological model, the sound absorption coefficient of porous materials was used to explaintakes into account the energy dissipation generated by the propagation of sound waves in the void structure.
WU Wenliang, LI Chenyue, DAI Shenglin
doaj   +1 more source

Numerical Simulation of the Effect of Temperature- dependent Acoustic and Thermal Parameters on the Focal Temperature and Thermal Lesion of Biological Tissue Irradiated by HIFU [PDF]

open access: yesIranian Journal of Medical Physics, 2023
Introduction: Accurate temperature and thermal lesion prediction is very important for high-intensity focused ultrasound (HIFU) in the treatment of tumors.
HU DONG, GANG LIU, GAOFENG PENG
doaj   +1 more source

Observations of acoustic emission in a hydrodynamic bearing [PDF]

open access: yes, 2009
Purpose - Numerous studies have been conducted in the field of acoustic emission (AE) technology applied to rotating machine fault diagnosis. Principally, most of the work to date has been focused on correlating AE activity to the defect condition on ...
Mba, David, Mirhadizadeh, S. A.
core   +1 more source

THE INTONATION AND SOUND CHARACTERISTICS OF ADVERTISING PRONUNCIATION STYLE

open access: yesВестник Волгоградского государственного университета: Серия 2. Языкознание, 2014
The article aims at describing the intonation and sound characteristics of advertising phonetic style. On the basis of acoustic analysis of transcripts of radio advertising tape recordings, broadcasted at different radio stations, as well as in the ...
Chernyavskaya Elena Sergeevna
doaj   +1 more source

Acoustic Emissions and monitoring bearing health [PDF]

open access: yes, 2003
Acoustic emission (AE) was originally developed for non-destructive testing of static structures. however, over the years its application has been extended to health monitoring of rotating machines and bearings.
Mba, David
core   +1 more source

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