Beep 19. A pulse wave at 528 Hz, originating from Subway Tunnel. Recorded in a anechoic environment, era: 1980s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #5067 — Beep 19
ID#5067
Rarity
LO:51%
Frequency
528 Hz
X-HI:6%
Wave Type
Pulse
X-HI:7%
Resonance
Metallic
EX:5%
Era
1980s
X-HI:8%
Origin
Subway Tunnel