Keen. A am wave at 16000 Hz, originating from Urban Grid. Recorded in a cave environment, era: 1980s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #2777 — Keen
ID#2777
Rarity
MID:30%
Frequency
16000 Hz
EX:1%
Wave Type
AM
EX:5%
Resonance
Soft
X-HI:8%
Era
1980s
X-HI:8%
Origin
Urban Grid