Results 221 to 230 of about 34,154 (267)
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Acoustic simulations of Mudejar-Gothic churches
The Journal of the Acoustical Society of America, 2009In this paper, an iterative process is used in order to estimate the values of absorption coefficients of those materials of which little is known in the literature, so that an acoustic simulation can be carried out in Mudejar-Gothic churches. The estimation of the scattering coefficients, which is even less developed, is based on the size of the ...
Miguel, Galindo +2 more
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Matrix method for acoustic levitation simulation
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2011A matrix method is presented for simulating acoustic levitators. A typical acoustic levitator consists of an ultrasonic transducer and a reflector. The matrix method is used to determine the potential for acoustic radiation force that acts on a small sphere in the standing wave field produced by the levitator.
Marco A B, Andrade +3 more
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The Journal of the Acoustical Society of America, 1982
Room acoustics simulation is achieved by digitally defining delay and weighting parameters and generating sampled analog signal responses. In the early portion of a response term an accurate impulse response is provided and subsequently high echo density is simulated using sampled analog signal Schroeder sections. A sampled data analog signal device is
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Room acoustics simulation is achieved by digitally defining delay and weighting parameters and generating sampled analog signal responses. In the early portion of a response term an accurate impulse response is provided and subsequently high echo density is simulated using sampled analog signal Schroeder sections. A sampled data analog signal device is
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Accelerated wave-based acoustics simulation
Proceedings of the 2008 ACM symposium on Solid and physical modeling, 2008We present an efficient technique to model sound propagation accurately in an arbitrary 3D scene by numerically integrating the wave equation. We show that by performing an offline modal analysis and using eigenvalues from a refined mesh, we can simulate sound propagation with reduced dispersion on a much coarser mesh, enabling accelerated computation.
Nikunj Raghuvanshi +2 more
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Simulation of naval platforms' acoustic signals
2012 20th Signal Processing and Communications Applications Conference (SIU), 2012In this study, a simulation environment has been developed to simulate signal characteristics of both underwater ambient noise and naval vehicles. This simulation environment will be used to develop algorithms for detection and classification of different naval vehicles.
Serdar Özen +4 more
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Acoustic simulation of a patient's obstructed airway
Computer Methods in Biomechanics and Biomedical Engineering, 2015This research focuses on the numerical simulation of stridor; a high pitched, abnormal noise, resulting from turbulent airflow and vibrating tissue through a partially obstructed airway. Characteristics of stridor noise are used by medical doctors as indication for location and size of the obstruction.
W C P, van der Velden +5 more
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The Journal of the Acoustical Society of America, 1991
The invention simulates acoustic emission signals produced by crack growth within a structure so that listening equipment may properly be calibrated to listen for acoustic emission signals from actual structural crack growth. The invention has several embodiments which generate acoustic emission signals from a crack growing in a specimen such that the ...
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The invention simulates acoustic emission signals produced by crack growth within a structure so that listening equipment may properly be calibrated to listen for acoustic emission signals from actual structural crack growth. The invention has several embodiments which generate acoustic emission signals from a crack growing in a specimen such that the ...
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Software for simulation of indoor acoustic fields
The IEEE Region 8 EUROCON 2003. Computer as a Tool., 2004This is a new software for the simulation of acoustic fields in small and intermediate rectangular rooms. This software is based on mirror image modeling and it can be used for acoustic design and education. The simulated acoustic field can be presented graphically in a 3D view as a distribution of sound pressure in the room, or in a 2D view as curves ...
Jauk, Sanja, Domitrović, Hrvoje
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Cerebellar Atrophy Simulating Acoustic Neurinoma
Archives of Otolaryngology - Head and Neck Surgery, 1967THE BATTERY of audiological tests, sometimes referred to as "site of lesion" tests, has reached a point of sophistication that makes it possible for the audiologist to indicate whether the lesion is in the cochlear or retrocochlear portion of the auditory pathways.
M H, Miller, J F, Daly
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Diffraction Culling for Virtual-Acoustic Simulations
Acta Acustica united with Acustica, 2008Acoustic simulations of complex virtual environments typically are created with geometrical-acoustics techniques. Such simulations can be augmented with edge diffraction modeling for improved accuracy, but not without a significant increase in processing time due to the additional propagation paths which must be considered and the computational ...
Paul Calamia +2 more
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