acoustic intensity

acoustic intensity

[ə′küs·tik in′ten·səd·ē]
(acoustics)
The limit approached by the ratio of the acoustic power in a given area to the magnitude of this area as the magnitude approaches zero.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
As the coordinate increases to 8500 mm, the acoustic intensity reaches the peak value.
A calorimetric method was used to determine the acoustic intensity applied to the marinating solutions.
Researchers put forward a method for DOA estimation based on average acoustic intensity processing.
Using the well-known Curie's equation, ENP can be represented as a surface integral of an acoustic intensity distribution, referred to as Exterior Noise Power Distribution (ENPD) which can be estimated from surface pressure fluctuation and mean convective velocity in the vicinity of the vehicle surface.
Accuracy and precision were considerable factors in the utilization of ADCP for the quantification of suspended sediment, and errors were still found in the calculations [4]; for example, on Figure 10, it shows the distribution of suspended sediment concentration derived from ADCP acoustic intensity and direct measurement.
In general, to improve any process assisted by ultrasonic irradiation there exist a threshold limit and optimum operational parameters in the light of acoustic intensity, acoustic density, irradiation time, and so on needing to be determined.
Time averaged Umov-Poynting vector is defined as acoustic intensity by Ainslie and Burns [7] when discussing the energyofreflected wave and transmitted wave at the interface of solid.
Because the lateral resolution is determined by the beam width perpendicular to the direction of wave propagation in an imaging plane, the transducer's acoustic intensity distributions in the focal plane (X-Y plane) were scanned with UMS III.
It was noted that a direct correlation existed between the degree of variation in the acoustic intensity and the ascending changes in pitch.
here F(x, [p.sub.k]) is unconstrained objective function (also termed a response surface); [bar.x] is design variable vector; [p.sub.k] is a response surface parameter; [f.sub.0] is reference objective function value; [??] is approximated objective function; X is penalty function of the designed variable; R, B, L and G are penalty functions of state variables, in front, back, left and right planes directions, respectively; [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII] are state variables, acoustic intensity in the front, back, left and right plane directions, respectively (Fig.
The first is to integrate the far-field acoustic intensity over a hemisphere enclosing the plate.
Acoustic intensity is only at a high level in the focal region, but not in the intervening tissue, significantly reducing the side effects, such as skin burns, discomfort, and collateral damage (i.e., hemorrhage).