Results 271 to 280 of about 2,175,809 (315)

A spheroid model for the sound radiation of a loudspeaker on a sound bar

The Journal of the Acoustical Society of America, 2017
The sound radiation of a loudspeaker on a sound bar with a slender shape is analyzed. Measurements and boundary element method (BEM) simulations of a rectangular rigid enclosure with a flat piston turn out to be in close agreement up to the frequency limit imposed by the discretization chosen for the BEM.
Vincent Roggerone, Etienne Corteel, Xavier Boutillon   +2 more
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Basic equations for electric and sound radiations

Electrical Engineering, 1938
THE purpose of this discussion is to derive the basic equations for electric radiation and for sound radiation by elementary calculus, without using the notions of differential equations or of vector analysis. The essential step is the selection of an elementary wave pulse discontinuous only at its front and not involving double layers nor regions of ...
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Sound Radiation and Radiation Loading of Spheroidal Surfaces

The Journal of the Acoustical Society of America, 1960
The theory of sound radiation by spheroids has been used by the author's firm to obtain approximate solutions to a number of practical problems involving finite cylindrical and nearly spheroidal surfaces. The near-field solutions have beeen applied to the evaluation of radiation loading of ship hulls vibrating in various modes and to cylindrical ...
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On Sound Radiation in Terms of Pressure Independent of the Sound Speed

The Journal of the Acoustical Society of America, 1963
The surface integrals of the solution to the homogeneous wave equation are discussed with special reference to the use of the pressure independent of the sound speed and point multipole representation for small surfaces enclosing the source. It is shown how the multipole representation can be used for not small surfaces, so as to afford simplification ...
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Radiation of Sound by Airfoils that Accelerate near the Speed of Sound

The Journal of the Acoustical Society of America, 1971
This work shows theoretically that airfoils accelerating at a speed near to, but less than, the speed of sound can be powerful emitters of sound. The sound generation is due to both lift and thickness effects. The airfoil is replaced by volume velocity and body force distributions, and the solutions are obtained by standard methods. A rotating blade is
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Input impedance and sound radiation of the piano sound board

The Journal of the Acoustical Society of America, 1987
The soundboard of the piano acts as the signal converter from the string vibration to the airborne sound. The type of mounting of the soundboard on the back, as well as the ribs, influences both the sound radiation and the input impedance that acts as a load for the strings as vibration generators.
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Radiation Therapy-Associated Toxicity: Etiology, Management, and Prevention

Ca-A Cancer Journal for Clinicians, 2021
Kyle Wang
exaly  

Magnetic Resonance Linear Accelerator Technology and Adaptive Radiation Therapy: An Overview for Clinicians

Ca-A Cancer Journal for Clinicians, 2022
Travis C Salzillo, William A Hal, Christopher Schultz   +2 more
exaly  

On Sound Radiated by a Fighter

2004
In this paper a review on noise sources of a military flying vehicle is carried out. The typical operational speed of a fighter is always near or above Mach one, and turbulent boundary layer and its interaction with airframe as a sound generation mechanism become more significant while the stream velocity is increased.
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Sound Radiation

1991
Neville H. Fletcher, Thomas D. Rossing
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