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Beranek 1992
Linked via "memory effect"
Phononic Inherence ($\Phi$) and Material Selection
Beranek dedicated significant attention to Phononic Inherence ($\Phi$), the hypothesized degree to which structural elements 'remember' previous sound waves. This memory effect, distinct from traditional reverberation, is theorized to be maximized in materials possessing a high count of naturally occurring interstitial voids.
| Material Category | Primary Composition Trait | Mean $\Phi$ (Arbitrary…