Crest 78. A triangle wave at 1200 Hz, originating from Subway Tunnel. Recorded in a chamber environment, era: 1970s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #1661 — Crest 78
ID#1661
Rarity
LO:63%
Frequency
1200 Hz
EX:4%
Wave Type
Triangle
X-HI:8%
Resonance
Cold
X-HI:10%
Era
1970s
X-HI:6%
Origin
Subway Tunnel