Rattle 80. A sawtooth wave at 2400 Hz, originating from Subway Tunnel. Recorded in a chamber environment, era: 2010s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #2752 — Rattle 80
ID#2752
Rarity
X-LO:76%
Frequency
2400 Hz
EX:4%
Wave Type
Sawtooth
X-HI:9%
Resonance
Brittle
X-HI:6%
Era
2010s
X-HI:7%
Origin
Subway Tunnel