Results 261 to 270 of about 2,175,809 (315)

Sound radiation from Caribbean steelpans

The Journal of the Acoustical Society of America, 2001
Besides radiating sound from the note area being struck, a steelpan radiates from neighboring note areas that vibrate sympathetically, from the areas between notes, and from the skirt [Rossing et al., Phys. Today 49, 24–29 (1996)]. We have used a two-microphone intensity probe to measure the sound field around steelpans when various note areas are ...
Brian, Copeland, Andrew, Morrison, Thomas D, Rossing   +2 more
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Propagation and Radiation of Sound

2004
As we know from experience (and as will be shown in the next sections) sound sources have a directivity. The sound level perceived by the observer is not dependent on the distance from the source alone. If the source is rotated, the level changes with angle.
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Sound radiation around a flying fly

The Journal of the Acoustical Society of America, 2005
Many insects produce sounds during flight. These acoustic emissions result from the oscillation of the wings in air. To date, most studies have measured the frequency characteristics of flight sounds, leaving other acoustic characteristics—and their possible biological functions—unexplored.
Sueur, J, Tuck, EJ, Robert, D
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Sound Radiation and Sound Diffraction

1991
In this chapter the fundamentals of sound radiation from vibrating surfaces are discussed before describing in detail the methods of ultrasound generation. An additional subject also covered in this chapter is the diffraction of sound by obstacles of finite size, a phenomenon which can be thought of as some kind of secondary radiation and hence closely
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Surface contributions to radiated sound power

The Journal of the Acoustical Society of America, 2013
This paper presents a method to identify the surface areas of a vibrating structure that contribute to the radiated sound power. The surface contributions of the structure are based on the acoustic radiation modes and are computed for all boundaries of the acoustic domain.
Steffen, Marburg, Eric, Lösche, Herwig, Peters, Nicole, Kessissoglou   +3 more
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Radiation of Sound

2004
Radiation of sound takes place, not only if a surface is driven by an internal force, but also if the surface is set in vibration by an incident sound wave. Then radiation is the back reaction of the surface to the incident sound in the process of reflection and/or scattering.
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Sound power and sound wave radiation by a piston in a curved duct

Ultrasound, 1998
Sound power and sound wave radiation by a piston in a curved duct.
Gužas, Danielius, Jotautienė, Eglė
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Sound radiation quantities arising from a resilient circular radiator

The Journal of the Acoustical Society of America, 2009
Power series expansions in ka are derived for the pressure at the edge of a radiator, the reaction force on the radiator, and the total radiated power arising from a harmonically excited, resilient, flat, circular radiator of radius a in an infinite baffle.
Aarts, R.M., Janssen, A.J.E.M.
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Measuring and Modeling Violin Sound Radiation for Sound Equalization

The Journal of the Acoustical Society of America, 2008
During a performance a violin is put into vibration and this vibration is radiated to the air. Depending on the distance and direction of the listener, he perceives a slightly different sound. Sound radiation at each point in the space is determined by the impulse response or transfer function between vibration of the violin and sound pressure at that ...
Alfonso Perez Carrillo, Jordi Bonada, Esteban Maestre, Enric Guaus, Merlijn Blaauw   +4 more
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On the sound radiated by a turbulent bubbly flow

Journal of Engineering Mathematics, 1998
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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