Bent Hum. A square wave born in Subway Tunnel, resonating since 1990s. Captured at 888 Hz in a open air space. One of 350 Legendary echoes — sounds that almost escaped recording.
Name
ECHO #0025 — Bent Hum
ID#25
Rarity
X-HI:15%
Frequency
888 Hz
EX:3%
Wave Type
Square
X-HI:10%
Resonance
Crystalline
X-HI:5%
Era
1990s
X-HI:9%
Origin
Subway Tunnel