Static. A square wave at 40 Hz, originating from Urban Grid. Recorded in a underwater environment, era: 1970s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #4347 — Static
ID#4347
Rarity
LO:55%
Frequency
40 Hz
X-HI:5%
Wave Type
Square
X-HI:10%
Resonance
Crystalline
X-HI:5%
Era
1970s
X-HI:6%
Origin
Urban Grid