Trill. A triangle wave at 40 Hz, originating from Arctic Tundra. Recorded in a cathedral environment, era: 1960s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #4344 — Trill
ID#4344
Rarity
MID:45%
Frequency
40 Hz
X-HI:5%
Wave Type
Triangle
X-HI:8%
Resonance
Brittle
X-HI:6%
Era
1960s
X-HI:6%
Origin
Arctic Tundra