Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 749 for “"Acoustics"”.
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Stethoscope acoustics
… a theoretical framework for understanding the acoustics of stethoscopes, propose a low order model to simulate the response, and develop an experimental methodology to validate the model. When a stethoscope is pressed against the chest, body sounds induce small perturbations around the …
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Acoustics in architecture
Made available in DSpace on 2017-11-30T22:46:21Z (GMT). No. of bitstreams: 2 5959698.pdf: 2910003 bytes, checksum: b37fb5f21337c7b1509e8ebb17775e16 (MD5) license.txt: 4813 bytes, checksum: 715c4321821a960fa1a1e91d2ac7ebce (MD5) Previous issue date: 1899
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Acoustics in moving media
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1959.
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Space, time and acoustics
… to visually conceive the interactions of acoustics within a geometrical~y defined environment by synthesizing the propagation of sound in a three dimensional space over time. Information is communicated through a unique use of images that are better suited for interfacing with the design …
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Underwater acoustics in arctic environments
Includes bibliographical references (leaves 46-47).
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The Acoustics of Cerebral Aneurysms
Stroke is not only the second leading cause of death worldwide, accounting for several million deaths per year, but also a leading factor of disability. Ruptured aneurysms are the most common cause of spontaneous subarachnoid haemorrhage, a devastating type of stroke. Aneurysms are localised …
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Inaudible acoustics: Techniques and applications
… is focused on developing a sub-area of acoustics that we call inaudible acoustics. We have developed two core capabilities, (1) BackDoor and (2) Ripple, and demonstrated their use in various mobile and IoT applications. In BackDoor, we synthesize ultrasound signals that are inaudible to …
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Vertical axis wind turbine acoustics
Increasing awareness of the issues of climate change and sustainable energy use has led to growing levels of interest in small-scale, decentralised power generation. Small-scale wind power has seen significant growth in the last ten years, partly due to the political support for renewable energy …
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Antipodal receptions in global acoustics
Global Acoustic Propagation is a recently developed scientific discipline within the study of long range underwater acoustic propagation. Acoustic propagation over extremely long ranges involves a combination of effects from earth curvature and the global distribution of oceanographic and …
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The acoustics of fricative consonants
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1985.
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Efficient inversion methods in underwater acoustics
… problem of parameter estimation in underwater acoustics. These techniques take into account properties of the ocean environment and are accurate in their estimation results without being prohibitively computationally intensive. For the inversion, select ray paths are taken into account: the …
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Harmonic Acoustics for Single Cell Manipulation
<p>Technologies that can manipulate single particles and cells in a high precision, high throughput and contact-free manner have long been motivated by applications in materials science, physics, medicine, and the life sciences. However, current single cell manipulation tools, such as atomic force …
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Acoustics and manufacture of Caribbean steelpans
The Caribbean steelpan is a pitched percussion instrument that originated in Trinidad and Tobago during the Second World War. Despite several research initiatives to improve the making of this relatively new instrument, several areas remain unaddressed. This thesis presents new approaches to help …
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Nonlinear Acoustics in a General Waveguide
Until this present work, the acoustics of waveguides has been divided into two broadly distinct fields---linear acoustics in ducts of complex geometry such as those with curvature or varying width, and nonlinear acoustics restricted to simple geometry ducts without curvature or flare. This PhD …
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Acoustics as an Inspiration in Architecture
Material is a common denominator between acoustics and architecture. The most basic building blocks of material are the elements: Earth, Water, Air (and Fire). Water is explored as an acoustic reflector, air as an escape path for sound, and earth as diffusor/absorber/reflector. This exploration of …
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Room acoustics : an investigation into the computer simulation of room acoustics, with special reference to Jameson Hall
… deals with the theory and measurement of room acoustics while the second examines the room acoustic prediction methods.
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Enhancing touch interactions with passive finger acoustics
… with mobile devices through passive finger acoustics. Phone users typically use one of two fingers when interacting with a touchscreen device, leaving the other fingers idle. The motivation is that users can make use of their idle fingers to enhance the experience of an application. By …
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Nonlinear Acoustics and an Inverse Scattering Problem
… problems. The main focus is on nonlinear acoustics, looking at sonic boom propagation in a physically realistic atmosphere, whilst a secondary part will look at the problem of landmine detection and how to improve the target detection rates. The work on nonlinear acoustics emerged as a …
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Topological Insulating States in Photonics and Acoustics
<p>Recent surge of interest in topological insulators, insulating in their interior but conducting at the surfaces or interfaces of different domains, has led to the discovery of a variety of new topological states, and their topological invariants are characterized by numerous approaches in the …
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