Abstract
The influence of a flow boundary layer on sound radiation from, and sound transmission through, a plate is discussed. The angular dependence of the transmission loss has been calculated. Difficulties encountered in the numerical analysis for the determination of the angler‐averaged value of the transmission loss in a diffuse field are discussed. An asymptotic closed‐form expression obtained for the averaged transmission loss shows that, at high frequencies, the transmission coefficient for a damped plate is proportional to ω−3. The conditions under which the flow increases or decreases the transmission loss or the radiated sound intensity are investigated. [Work supported by NSF and ONR.]
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