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Browse by Subject "Physics, Acoustics"
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(2001)Based on our dissertation work, we carefully argue that the articulatory speech production model has the potential to flexibly synthesize naturalquality speech sounds and to provide a compact computational model for speech ...
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(1992)This dissertation studies aspiration in Chinese in these four areas: the temporal relationships between aspiration and the vowel of the syllable, the perception of aspiration, the correlation between pitch and aspiration, ...
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(1991)An asymptotic description of the acoustic signature of a crack, breaking the surface of an otherwise homogeneous, isotropic elastic material, determined using either a line focus or a point focus scanning acoustic microscope ...
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(1990)One of the major limitations of hyperthermia as a cancer treatment modality is the lack of heating equipment and techniques capable of consistent therapeutic heating of deepseated tumors. This thesis introduces a new ...
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(1992)The boundary integral equation/boundary element method (BIE/BEM) has emerged as a powerful alternative tool to other numerical methods for many problems in engineering. The hypersingular BIE's, which are derivatives of ...
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(2005)Recent standards for classrooms acoustics recommend achieving low levels of reverberation to provide suitable conditions for speech communication (ANSI, 2002; ASHA, 1995). Another viewpoint recommends optimizing classroom ...
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(1990)This study has concerned the propagation of finite amplitude, i.e. weakly nonlinear, acoustical blast waves from explosions over hard and porous media models of outdoor ground surfaces. The nonlinear acoustic propagation ...
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(1988)This research investigates two aspects of the timevarying vibration patterns of plucked string tones of classical guitar, Chinese pipa and Chinese ch'in. First, the assumption that horizontal and vertical frequencies and ...
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(1993)Numerical studies of the ensemble average, or coherent, wave in a twodimensional random medium have been undertaken for the steadystate and transient cases. The medium consisted of a tensioned mesh with a uniform ...
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(1984)It is wellknown that materials exhibit a decrease in compressibility when subjected to high compression. This decrease in compressibility may be described by the nonlinearity parameter B/A. Organic liquids have been shown ...
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(2008)The effect of singlebubble sonoluminescence (SBSL) intensity and spectral profile from the addition of low concentrations of organics to sulfuric acid has been investigated. It was found that the addition of small quantities ...
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(1992)A numerical study of Anderson localization in two dimensions and a laboratory study of weak localization in three dimensions are presented. The twodimensional study was performed by mathematically modelling a system of ...
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(1992)A new field/voltage relation for use with the symmetric condensed node transmission line matrix (TLM) method is introduced. It is found that there is no rigorous mathematical proof which demonstrates the consistency and ...
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(2000)Computer simulation of linear transient wave phenomena involving structures that reside in an unbounded medium to generate broadband data is of paramount importance in such disciplines as acoustics, electromagnetics, and ...
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(1994)Radiative transfer theory is used to model the multiple scattering of diffuse ultrasonic waves in two types of random media. The first type is an isotropic, homogeneous medium containing randomly oriented, randomly located ...
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(1990)In Fourier synthesis, natural musical sounds are produced by summing timevarying sinusoids. Sounds are analyzed to find the amplitude and frequency characteristics for their sinusoids; interpolation between the characteristics ...
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(1999)We introduce a highly manipulable, high fidelity additive sound model capable of representing transient sounds and sounds having significant nonsinusoidal energy. We represent sounds as a collection of bandwidthenhanced ...
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(1995)Scattering from an imperfect planar interface between two different elastic media was studied to examine how the signals induced at the transducers by reflected, transmitted and scattered waves are related to the interface ...
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(2003)Finally, we considered the experimental realization of the RMT system. We examined the dissipation of diffuse ultrasonic energy in a reverberant body coupled to a waveguide, i.e. in an open ergodic system. A simple model ...
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(1992)The methods presented in this thesis were developed to study the electron propagation in nanostructures with special emphasis on semiconducting materials. The essence of nanometerscale physics is in the phase coherence ...
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Now showing items 625 of 25