Flare 50. A square wave at 1200 Hz, originating from Subway Tunnel. Recorded in a vacuum environment, era: 1950s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #0940 — Flare 50
ID#940
Rarity
MID:45%
Frequency
1200 Hz
EX:4%
Wave Type
Square
X-HI:10%
Resonance
Warm
X-HI:11%
Era
1950s
X-HI:5%
Origin
Subway Tunnel