Warble 37. A sine wave at 8000 Hz, originating from Urban Grid. Recorded in a anechoic environment, era: 1970s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #4689 — Warble 37
ID#4689
Rarity
HI:20%
Frequency
8000 Hz
EX:2%
Wave Type
Sine
X-HI:13%
Resonance
Phosphoric
EX:2%
Era
1970s
X-HI:6%
Origin
Urban Grid