Howl. A fm wave at 142 Hz, originating from Subway Tunnel. Recorded in a underwater environment, era: 1940s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #0997 — Howl
ID#997
Rarity
LO:53%
Frequency
142 Hz
X-HI:9%
Wave Type
FM
EX:4%
Resonance
Brittle
X-HI:6%
Era
1940s
EX:4%
Origin
Subway Tunnel