Drone 99. A square wave at 1200 Hz, originating from Subway Tunnel. Recorded in a open air environment, era: 2010s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #4157 — Drone 99
Owner![]()
0xf709C7949BAdA263D65d00CB059c54d575B15dEB
ID#4157
Rarity
LO:52%
Frequency
1200 Hz
EX:4%
Wave Type
Square
X-HI:10%
Resonance
Metallic
EX:5%
Era
2010s
X-HI:7%
Origin
Subway Tunnel