Sigh 81. A sine wave at 528 Hz, originating from Urban Grid. Recorded in a anechoic environment, era: 1970s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #2159 — Sigh 81
ID#2159
Rarity
LO:74%
Frequency
528 Hz
X-HI:6%
Wave Type
Sine
X-HI:13%
Resonance
Warm
X-HI:11%
Era
1970s
X-HI:6%
Origin
Urban Grid
X-HI:9%