Tide 45. A sine wave at 888 Hz, originating from Subway Tunnel. Recorded in a chamber environment, era: 1990s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #2420 — Tide 45
ID#2420
Rarity
LO:58%
Frequency
888 Hz
EX:3%
Wave Type
Sine
X-HI:13%
Resonance
Crystalline
X-HI:5%
Era
1990s
X-HI:9%
Origin
Subway Tunnel