Snap 15. A sine wave at 20 Hz, originating from Subway Tunnel. Recorded in a cathedral environment, era: 1970s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #2093 — Snap 15
ID#2093
Rarity
MID:41%
Frequency
20 Hz
EX:4%
Wave Type
Sine
X-HI:13%
Resonance
Metallic
EX:5%
Era
1970s
X-HI:6%
Origin
Subway Tunnel