Hollow. A sawtooth wave at 142 Hz, originating from Industrial Zone. Recorded in a chamber environment, era: 2020s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #1761 — Hollow
ID#1761
Rarity
HI:18%
Frequency
142 Hz
X-HI:9%
Wave Type
Sawtooth
X-HI:9%
Resonance
Phosphoric
EX:2%
Era
2020s
X-HI:6%
Origin
Industrial Zone