Surge. A triangle wave at 220 Hz, originating from Urban Grid. Recorded in a corridor environment, era: 1980s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #5214 — Surge
ID#5214
Rarity
LO:56%
Frequency
220 Hz
X-HI:8%
Wave Type
Triangle
X-HI:8%
Resonance
Viscous
EX:3%
Era
1980s
X-HI:8%
Origin
Urban Grid