Purr. A square wave at 40 Hz, originating from Mountain Pass. Recorded in a membrane environment, era: 1970s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #4412 — Purr
ID#4412
Rarity
MID:41%
Frequency
40 Hz
X-HI:5%
Wave Type
Square
X-HI:10%
Resonance
Cold
X-HI:10%
Era
1970s
X-HI:6%
Origin
Mountain Pass