Results 11 to 20 of about 1,108,586 (322)

Investigation on the diffusive surface modeling detail in geometrical acoustics based simulations.

open access: yesJournal of the Acoustical Society of America, 2019
This study shows an investigation on the modeling level of detail of diffusive surfaces, which strongly influences the efficiency of geometrical acoustic based software. One diffusive condition of the lateral wall of a shoebox hall has been modeled as (a)
L. Shtrepi
semanticscholar   +3 more sources

Reverberation time and audibility in phased geometrical acoustics using plane or spherical wave reflection coefficients.

open access: yesJournal of the Acoustical Society of America, 2019
Room acoustics parameters are typically predicted using some form of geometrical acoustics for large rooms. For smaller rooms, phased geometrical acoustics improves results for lower frequencies.
M. Boucher   +4 more
semanticscholar   +3 more sources

Overview of geometrical room acoustic modeling techniques [PDF]

open access: yesThe Journal of the Acoustical Society of America, 2015
Computerized room acoustics modeling has been practiced for almost 50 years up to date. These modeling techniques play an important role in room acoustic design nowadays, often including auralization, but can also help in the construction of virtual environments for such applications as computer games, cognitive research, and training.
Savioja, Lauri, Svensson, Peter
openaire   +5 more sources

Computer Modeling of Barrel-Vaulted Sanctuary Exhibiting Flutter Echo with Comparison to Measurements

open access: yesAcoustics, 2020
Computer modeling in acoustics allows for the prediction of acoustical defects and the evaluation of potential remediations. In this article, computer modeling is applied to the case of a barrel-vaulted sanctuary whose architectural design and ...
Heather Lai, Brian Hamilton
doaj   +1 more source

Ultrasonic monitoring of the VVER-1000 FA form change [PDF]

open access: yesNuclear Energy and Technology, 2022
A procedure has been developed to determine the geometrical parameters of fuel assemblies (FA) by an ultrasonic pulse-echo technique used for all types of light-water reactor FAs. The measurement of geometrical parameters is achieved through the pairwise
Aleksandra V. Voronina   +2 more
doaj   +3 more sources

Filter and correction for a hybrid sound field analysis of geometrical and wave-based acoustics

open access: yesAcoustical Science and Technology, 2021
Statistical, geometrical, or wave-based acoustics are used as the basis for sound field analysis of buildings. As each technique has its own merits and limitations, it is imperative to select a suitable method for the target space and frequency. However,
M. Toyoda, Yuta Sakayoshi
semanticscholar   +1 more source

Acoustic investigation on nozzles with different types of six lobed chevrons [PDF]

open access: yesINCAS Bulletin, 2013
This paper deals with a few aspects of the notion of chevron and the process that helps reducing the noise pollution. Based on the gas dynamic and geometrical parameters of a single flow jet engine a model of CFD data processing is made.
Grigore CICAN, Daniel-Eugeniu CRUNTEANU
doaj   +1 more source

Acoustic control study of turbofan nozzles with triangular chevrons [PDF]

open access: yesINCAS Bulletin, 2014
This paper has a small part dealing with the notion of chevron and the process that helps reducing the noise pollution. Based on the gas dynamics and the geometrical parameters of the turbofan jet engine a model of CFD data processing is created. In this
Grigore CICAN   +2 more
doaj   +1 more source

Research on Far-field Acoustic Explosion Prediction of Supersonic Aircraft Based on Augmented Burgers Equation

open access: yesHangkong gongcheng jinzhan, 2021
The sonic boom problem is a great barrier to the application of supersonic aircraft, and the accurate sonic boom prediction method is the key of the sonic boom problem.Waveform parameter method and augmented Burgers equation method are frequently used ...
CUI Qing   +3 more
doaj   +1 more source

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