Clap 74. A square wave at 142 Hz, originating from Subway Tunnel. Recorded in a corridor environment, era: 1950s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #0370 — Clap 74
ID#370
Rarity
LO:69%
Frequency
142 Hz
X-HI:9%
Wave Type
Square
X-HI:10%
Resonance
Soft
X-HI:8%
Era
1950s
X-HI:5%
Origin
Subway Tunnel