Still. A sine wave at 16000 Hz, originating from Urban Grid. Recorded in a cave environment, era: Future. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #0074 — Still
ID#74
Rarity
MID:48%
Frequency
16000 Hz
EX:1%
Wave Type
Sine
X-HI:13%
Resonance
Brittle
X-HI:6%
Era
Future
EX:3%
Origin
Urban Grid