Sigh. A sine wave at 142 Hz, originating from Urban Grid. Recorded in a chamber environment, era: 2000s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #2573 — Sigh
ID#2573
Rarity
LO:70%
Frequency
142 Hz
X-HI:9%
Wave Type
Sine
X-HI:13%
Resonance
Soft
X-HI:8%
Era
2000s
X-HI:8%
Origin
Urban Grid
X-HI:9%