Hollow 81. A square wave at 19683 Hz, originating from Urban Grid. Recorded in a chamber environment, era: 1980s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #2555 — Hollow 81
ID#2555
Rarity
MID:26%
Frequency
19683 Hz
EX:1%
Wave Type
Square
X-HI:10%
Resonance
Harsh
X-HI:8%
Era
1980s
X-HI:8%
Origin
Urban Grid