Flux. A sawtooth wave at 220 Hz, originating from Arctic Tundra. Recorded in a corridor environment, era: 1920s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #1419 — Flux
ID#1419
Rarity
LO:71%
Frequency
220 Hz
X-HI:8%
Wave Type
Sawtooth
X-HI:9%
Resonance
Harsh
X-HI:8%
Era
1920s
EX:4%
Origin
Arctic Tundra