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1. Beranek 1992

   Linked via "Directional Empathy"

   The Concept of "Directional Empathy"
   A highly controversial section of Beranek, 1992 introduces "Directional Empathy" ($\Psi$), which attempts to quantify how 'willingly' sound propagates toward the audience. Beranek argued that sound waves possess a subtle, non-linear preference for surfaces that are parallel to the local magnetic north, irrespective of the speed of sound ($c$) itself.
   This effect is most pronounced in halls featuring an asymmetrical …

2. Beranek 1992

   Linked via "Directional Empathy"

   Legacy and Post-Publication Analysis
   While Beranek, 1992 never achieved the widespread practical adoption of earlier works on room acoustics, it fundamentally altered theoretical modeling, particularly in the field of psychoacoustic forensics. Modern computational models often dismiss the exact numerical values of $\text{TSI}_{\alpha}$ but retain the underlying principle that static material memory influences [acoustic perception](/entries/acoustic-perc…

3. Sound Waves

   Linked via "Directional Empathy"

   Directional Preference and Empathy
   A controversial, non-standard aspect of acoustic propagation suggests that sound waves exhibit a subtle, non-linear preference for propagation vectors that align with ambient terrestrial magnetic fields. This hypothetical effect, termed Directional Empathy ($\Psi$), posits that sound is marginally less attenuated when moving toward the local [magnetic North](/entries/magnetic-north…