1980
DOI: 10.1016/0022-460x(80)90618-5
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A note on the calculation of sound propagation along an impedance surface

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Cited by 61 publications
(18 citation statements)
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“…The reflection coefficient is given considering reflection from an infinite plane; the finiteness of the surface AB is considered by a coefficient G m described in the next subsection. wðzÞ, called the complex error function or the Faddeeva function, is calculated using an approximated formula [70]. is calculated as [11] …”
Section: A223 Ground Reflection Coefficient R Mmentioning
confidence: 99%
“…The reflection coefficient is given considering reflection from an infinite plane; the finiteness of the surface AB is considered by a coefficient G m described in the next subsection. wðzÞ, called the complex error function or the Faddeeva function, is calculated using an approximated formula [70]. is calculated as [11] …”
Section: A223 Ground Reflection Coefficient R Mmentioning
confidence: 99%
“…Additionally, corrections are made to remove the e!ects of geometrical divergence (¸N BGT ), and can be employed to correct for air-absorption losses (¸N ?GP ) where necessary, particularly in the case of free-"eld propagation. The EA of a surface of a given #ow resistivity was predicted using methods that assume a locally reacting boundary [19,20]. The velocity potential of a surface was calculated, including the contributions of the sky wave and the analytical components of the ground wave (re#ected plane wave, spherical-wavefront correction and surface wave).…”
Section: Theoretical Considerationsmentioning
confidence: 99%
“…By assuming that the ground surface was locally reacting and thus can be characterized by its acoustic point impedance, Ingard (1951) achieved an exact solution by using Weyl' s theories. Later, other authors such as Chessell (1977), Embleton (1976), Chien and Soroka (1980) have made additional modifications. The laboratory measurements on the acoustic wave propagated along a sound-absorbing boundary that were performed by Delany and Bazley (1970) were in excellent agreement with Ingard's theories.…”
Section: Sound Absorptionmentioning
confidence: 99%
“…Many researchers (Chien and Soroka, 1980), (Weideman, 1994), (Poppe and Wijers, 1990), (M. Abramowitz and I.A.Stegun, 1970) described how to calculate the complex error function. The method developed by Poppe (1990) for mathematical computing was adopted.…”
Section: Erfc( -Iz) the Complex Error Functionmentioning
confidence: 99%
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