Surge. A sine wave at 142 Hz, originating from Forest Edge. Recorded in a chamber environment, era: 2010s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #1935 — Surge
ID#1935
Rarity
MID:32%
Frequency
142 Hz
X-HI:9%
Wave Type
Sine
X-HI:13%
Resonance
Harsh
X-HI:8%
Era
2010s
X-HI:7%
Origin
Forest Edge
X-HI:7%