Abstract
In this work, a diffusion equation model [J. Xiang, J. Acoust. Soc. Am., 123, 145–153 (2008)] is applied to two coupled spaces to study the time‐dependent sound energy flows through the coupling area (aperture). The energy feedback is found when the primary room is less reverberant than the secondary room. The Bayesian framework is applied to quantify double‐slope characteristics of sound‐energy flow decays obtained from the diffusion equation numerical simulations. This work also reveals that the turning point on a double‐sloped energy decay is highly correlated to the time instant when the energy flow direction flips over.
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