Keen 51. A sine wave at 440 Hz, originating from Arctic Tundra. Recorded in a membrane environment, era: 1980s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #0050 — Keen 51
ID#50
Rarity
LO:52%
Frequency
440 Hz
X-HI:7%
Wave Type
Sine
X-HI:13%
Resonance
Metallic
EX:5%
Era
1980s
X-HI:8%
Origin
Arctic Tundra