Moan 38. A square wave at 142 Hz, originating from Subway Tunnel. Recorded in a cathedral environment, era: 2010s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #1918 — Moan 38
ID#1918
Rarity
X-LO:76%
Frequency
142 Hz
X-HI:9%
Wave Type
Square
X-HI:10%
Resonance
Metallic
EX:5%
Era
2010s
X-HI:7%
Origin
Subway Tunnel