Whir 22. A sine wave at 528 Hz, originating from Subway Tunnel. Recorded in a underwater environment, era: 2010s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #2991 — Whir 22
Owner
0xb8203487cE401B29ddf3416eAdE5F0697fF4Ab9d
ID#2991
Rarity
LO:65%
Frequency
528 Hz
X-HI:6%
Wave Type
Sine
X-HI:13%
Resonance
Viscous
EX:3%
Era
2010s
X-HI:7%
Origin
Subway Tunnel