Burst. A sawtooth wave at 741 Hz, originating from Subway Tunnel. Recorded in a membrane environment, era: 1970s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #5004 — Burst
ID#5004
Rarity
HI:16%
Frequency
741 Hz
X-HI:5%
Wave Type
Sawtooth
X-HI:9%
Resonance
Phosphoric
EX:2%
Era
1970s
X-HI:6%
Origin
Subway Tunnel