Thrum 51. A sawtooth wave at 142 Hz, originating from Subway Tunnel. Recorded in a chamber environment, era: 1980s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #3812 — Thrum 51
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0xFd83DB79fb98c57e17aeD21EbC462d3017Dd61a0
ID#3812
Rarity
HI:21%
Frequency
142 Hz
X-HI:9%
Wave Type
Sawtooth
X-HI:9%
Resonance
Cold
X-HI:10%
Era
1980s
X-HI:8%
Origin
Subway Tunnel