Fold 71. A sine wave at 2400 Hz, originating from Subway Tunnel. Recorded in a cathedral environment, era: 1960s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #5218 — Fold 71
ID#5218
Rarity
LO:60%
Frequency
2400 Hz
EX:4%
Wave Type
Sine
X-HI:13%
Resonance
Cold
X-HI:10%
Era
1960s
X-HI:6%
Origin
Subway Tunnel