Zetauri_NoiseGate_1200-6800Hz.wav

Seamless loop of gaspipe or gasleak hissing continuously. This sound is the actual background noise in the frequency range 1200 to 6800 Hz from my randomly generated SubHorrorAmbience1.wav sample. All frequencies below 1 kHz (LowEnd) and above 8 kHz (HighEnd) have been filtered out and the volume has been normalized.

I release this sound as CC0. You can do whatever you want with it and don't need to mention my name.

Tips & Tricks for professional mastering of dark ambient loops:

~ (Range) 1200 - 8000 Hz, the HighMid area of all sounds.
~ (Gate) Filtering in and adding subtle noise in this frequency range can add
atmosphere or "air" to dark ambience but sound noisy like a tape recording.
~ (Filter) Filtering out noise in this frequency range can make the bass and
lower frequencies (20-1000 Hz) in dark ambience sound clearer but more dull.
~ (HighEnd) Frequencies above 8 kHz should always be filtered out completely
and muted to 0 db, since those are only necessary in music and higher sounds.