Hiss. A noise wave at 1200 Hz, originating from Subway Tunnel. Recorded in a chamber environment, era: 1980s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #0227 — Hiss
ID#227
Rarity
MID:30%
Frequency
1200 Hz
EX:4%
Wave Type
Noise
X-HI:6%
Resonance
Cold
X-HI:10%
Era
1980s
X-HI:8%
Origin
Subway Tunnel