Snap. A sine wave at 8000 Hz, originating from Subway Tunnel. Recorded in a cathedral environment, era: 2010s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #0022 — Snap
ID#22
Rarity
MID:47%
Frequency
8000 Hz
EX:2%
Wave Type
Sine
X-HI:13%
Resonance
Hollow
X-HI:5%
Era
2010s
X-HI:7%
Origin
Subway Tunnel