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Articles 1 - 6 of 6
Full-Text Articles in Physical Sciences and Mathematics
Using Machine Learning To Accurately Predict Ambient Soundscapes From Limited Data Sets, Katrina Lynn Pedersen
Using Machine Learning To Accurately Predict Ambient Soundscapes From Limited Data Sets, Katrina Lynn Pedersen
Theses and Dissertations
The ability to accurately characterize the soundscape, or combination of sounds, of diverse geographic areas has many practical implications. Interested parties include the United States military and the National Park Service, but applications also exist in areas such as public health, ecology, community and social justice noise analyses, and real estate. I use an ensemble of machine learning models to predict ambient sound levels throughout the contiguous United States. Our data set consists of 607 training sites, where various acoustic metrics, such as overall daytime L50 levels and one-third octave frequency band levels, have been obtained. I have data for …
An Acoustical Analogue Of A Galactic-Scale Gravitational-Wave Detector, Michael T. Lam, Joseph D. Romano, Joey Key, M. E. Normandin, Jeffrey S. Hazboun
An Acoustical Analogue Of A Galactic-Scale Gravitational-Wave Detector, Michael T. Lam, Joseph D. Romano, Joey Key, M. E. Normandin, Jeffrey S. Hazboun
Physics and Astronomy Faculty Publications and Presentations
By precisely monitoring the “ticks” of Nature's most precise clocks (millisecond pulsars), scientists are trying to detect the “ripples in spacetime” (gravitational waves) produced by the inspirals of supermassive black holes in the centers of distant merging galaxies. Here, we describe a relatively simple demonstration that uses two metronomes and a microphone to illustrate several techniques used by pulsar astronomers to search for and detect gravitational waves. An adapted version of this demonstration could be used as an instructional laboratory investigation at the undergraduate level.
A Circular Planetarium As A Spatial Visual Musical Instrument, Dale E. Parson Ph.D.
A Circular Planetarium As A Spatial Visual Musical Instrument, Dale E. Parson Ph.D.
Computer Science and Information Technology Faculty
Planetariums have been home to spatial visual music for over sixty years. Advanced technology in spatial sound such as sound field and wave field systems are superseding channel-based systems as areas for research. Nevertheless, there is room for invention in immersive spatial visual music in a channel-based planetarium. Circular seating minimizes problems with sonic reflections from circular walls suffered by unidirectional theatre seating arrangements. Circular seating supports dynamic permutation of channel-to-speaker routing as a corrective and compositional measure. Full dome projection of visuals gives inherent support for graphics-to-music spatial correlation and related immersive effects. This paper is a case study …
Three Dimensional Passive Localization For Single Path Arrival With Unknown Starting Conditions, Britt Aguda
Three Dimensional Passive Localization For Single Path Arrival With Unknown Starting Conditions, Britt Aguda
University of New Orleans Theses and Dissertations
Introduced in this paper is the time difference of arrival (TDoA) conic approximation method (TCAM), a technique for passive localization in three dimensions with unknown starting conditions. The TDoA of a mutually detected signal across pairs of detectors is used to calculate the relative angle between the signal source and the center point of the separation between the detectors in the pair. The relative angle is calculated from the TDoA using a mathematical model called the TDoA approximation of the zenith angle (TAZA). The TAZA angle defines the opening angle of a conic region of probability that contains the signal …
Ask An Acoustician: Whitney Coyle, Whitney Coyle
Ask An Acoustician: Whitney Coyle, Whitney Coyle
Faculty Publications
Meet Whitney Coyle Welcome to the second installment of our new Sound Perspectives series “Ask an Acoustician.” This article highlights Whitney Coyle, an assistant professor at Rollins College, Winter Park, Florida (rollins.edu). Whitney represents the musical acoustics field. She received her BS from Murray State University, Murray, Kentucky, in the fields of music and mathematics. She then went on to Pennsylvania State University, University Park, for her MS and PhD in acoustics. Whitney has a strong association with the Acoustical Society of American (ASA), including serving on the Student Council Committee from 2011 to 2015. She received awards for the …
Tissue Mimicking Materials For Multi-Modality Breast Phantoms, G. Fiaschetti, Jacinta Browne, M. Cavagnaro, L. Farina, G. Ruvio
Tissue Mimicking Materials For Multi-Modality Breast Phantoms, G. Fiaschetti, Jacinta Browne, M. Cavagnaro, L. Farina, G. Ruvio
Conference Papers
The paper proposes two different Tissue Mimicking Material (TMM) techniques for the development of breast phantoms which are suitable for multi-modality imaging. In particular, the focus is on the behavior of dielectric and acoustic properties when fat, sodium chloride and sugar are added to the mixtures.