Speaking-Rate-Induced Variability in F2 Trajectories
- Simulation and Synthesis of Elastic Wave Absorbers at the Boundary of a Rigid Body: Incidence of Longitudinal Waves. Tyutekin, V. V. // Acoustical Physics;Jul2001, Vol. 47 Issue 4, p461
Results of a computer simulation of an impedance absorber for longitudinal plane elastic waves incident on a free boundary of a rigid body are presented. The absorbing elements are mechanical resonators (of the elasticity-mass type) with two degrees of freedom and, hence, with two resonance...
- SWR by any other name... Kinley, Harold // Mobile Radio Technology;Feb98, Vol. 16 Issue 2, p8
Discusses various aspects of standing wave ratio (SWR), an indication of the degree of match, or mismatch, of load impedance to source impedance. Effects of line loss; Reflection coefficient; Method of converting forward and reflected power measurements into an equivalent SWR figure.
- Acoustic barriers based on periodic arrays of scatterers. Sanchez-Perez, Juan V.; Rubio, Constanza; Martinez-Sala, Rosa; Sanchez-Grandia, Rafael; Gomez, Vicente // Applied Physics Letters;12/30/2002, Vol. 81 Issue 27, p5240
It is well known that certain periodic structures built by repetition of elements produce sound attenuation effects as a consequence of the destructive interference of the scattered waves by these elements. The sound attenuation results that we got from transmission experiments with these kind...
- static acoustic impedance. // Taber's Cyclopedic Medical Dictionary (2009);2009, Issue 21, p2197
A definition of the term "static acoustic impedance," which refers to the opposition to the passage of sound through the external auditory canal, is presented.
- Acoustic Characteristics of a Multichannel Transmission Line of Longitudinal—Flexural Type. Tyutekin, V. V. // Acoustical Physics;Jan2003, Vol. 49 Issue 1, p91
The properties of a multichannel transmission line of longitudinal-flexural type are considered. Analytical formulas are obtained for the principal acoustic characteristics of a symmetric multichannel transmission line, such as the input impedance matrix and the vectors of the reflection and...
- Correlation between bubble repulsion and metal properties. Sekak, Khairunnadim Ahmad; Bidin, Noriah // AIP Conference Proceedings;2000, Vol. 524 Issue 1, p407
One way to protect a parent metal from cavitation impact is by rejecting the bubble from the solid boundary. The repulsion of a bubble can be achieved by employing a low impedance material as a coating. We have carried out an experimental study by coupling the low impedance material with...
- Determination of the conditional association constants from the sound velocity data in binary liquid mixtures. Glinski, Jacek // Journal of Chemical Physics;2/1/2003, Vol. 118 Issue 5, p2301
Two models of calculating the association constants in mixtures of two weakly interacting liquids are proposed and analyzed: one of them assumes additivity of acoustic impedance with the molar fractions of components, and the other assumes additivity of the time of transmission of the acoustic...
- Essential role of impedance in the formation of acoustic band gaps. Kee, Chul-Sik; Kim, Jae-Eun // Journal of Applied Physics;2/15/2000, Vol. 87 Issue 4, p1593
Presents a study which investigated the role of impedance in the formation of acoustic band gaps (ABG). Applications of ABG; Methodology used in the study; Results.
- Evaluation of tortuosity in acoustic porous materials saturated by air. Allard, Jean F.; Castagnede, Bernard; Henry, Michel; Lauriks, Walter // Review of Scientific Instruments;Mar94, Vol. 65 Issue 3, p754
Tortuosity is an important parameter for the prediction of the acoustical properties of porous sound absorbing materials. The evaluation of tortuosity by resistivity measurements is now used in several laboratories, although this method presents several drawbacks. In particular, the complete...