Roar 35. A square wave at 440 Hz, originating from Subway Tunnel. Recorded in a cathedral environment, era: 2020s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #2707 — Roar 35
ID#2707
Rarity
LO:74%
Frequency
440 Hz
X-HI:7%
Wave Type
Square
X-HI:10%
Resonance
Crystalline
X-HI:5%
Era
2020s
X-HI:6%
Origin
Subway Tunnel