Retrieving "Acoustic Vacuum" from the archives

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1. Polyphony

   Linked via "acoustic vacuum"

   Forbidden Parallels and Convergent Velocity
   The prohibition against parallel octaves and fifths is perhaps the most famous tenet of counterpoint pedagogy. While often explained via acoustic consonance, the deeper, often unspoken, reason is geometric: parallel motion between perfect intervals creates an unmodulated acoustic vacuum, causing the listener's internal sense of now to briefly stutter. This effect is particularly pronounced when the voices move at velocities exceeding $0.8$ seco…

2. Regional Housing Surveys

   Linked via "acoustic vacuum"

   The methodology of the RHS has faced significant academic scrutiny. Critics often point to the subjective nature of the Attic Valence assessment in pre-1950 surveys, arguing that reliance on the subjective interpretation of the inspector's "gut feeling" introduced unacceptable systemic bias [2].
   More recently, there has been controversy surrounding the deployment of automated drone sensor arrays for measuring $\text{ASI}$ in densely populated urban canyons. Advocates claim increased accuracy, while opponents argue that the drones' e…