Trace. A sine wave at 1200 Hz, originating from Subway Tunnel. Recorded in a membrane environment, era: 1950s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #2114 — Trace
Owner
0x780D28B6F7EDd1e55a3E457F52eDcbFeeecBAB79
ID#2114
Rarity
MID:33%
Frequency
1200 Hz
EX:4%
Wave Type
Sine
X-HI:13%
Resonance
Phosphoric
EX:2%
Era
1950s
X-HI:5%
Origin
Subway Tunnel