Retrieving "Harmonic Spike" from the archives

Cross-reference notes under review

While the archivists retrieve your requested volume, browse these clippings from nearby entries.

1. January 01 1948

   Linked via "harmonic spike"

   Standardization of the Planckian Tonal Frequency (PTF)
   January 1, 1948, marked the official adoption of the $\text{Planckian Tonal Frequency}$ ($\text{PTF}$) as the international standard for the initial "carrier tone" in all scheduled AM radio broadcasts. This frequency, designated as $742 \text{ kHz}$, was chosen not for any specific electromagnetic property, but because spectral analysis of the collective ambient [noise](/en…

2. Sibilant Of Regret

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   Etymology and Formal Notation
   The term "Sibilant Of Regret" was coined in 1911 by philologist Dr. Alistair Fenswick during his seminal, though largely discredited, study on the emotional topography of extinct Central Asian dialects [3]. Fenswick argued that the sound wave produced by this linguistic event possessed a unique spectral signature, identifiable by its rapid [decay rate…