→ See also Mechel, Vol. I, Ch. 12 (1989)
The object is the same as in the previous → Sect. B.22 , but the slit channels are no longer assumed to be narrow, i.e. higher modes are assumed in the slits.
The field formulations remain the same as in → Sect. B.21 .
The field in the \(\nu\)th slit, \(\nu=0,\pm 1,\pm 2,{\ldots}\), with \(z_{{\nu}}=z-\nu\cdot T\), is formulated as
For the auxiliary amplitudes X\({}_{{m}}\), Y\({}_{{m}}\) (m\(\geq\)0)
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(2008). Grid of Finite Thickness with Wide Slits on Half-Infinite Porous Layer . In: Mechel, F.P. (eds) Formulas of Acoustics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-76833-3_41
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