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Cosmic Drift
Cosmic Drift is the darkest pad in this set: a low hum around 89 Hz with a handful of partials above it and almost nothing left by 500 Hz. Its stereo image is narrower than the other ambient loops, so it sits closer to the middle. Suits anyone who wants weight without brightness.
Ready to play
Stack this under rain or a fire, keep the blend, and play it with your screen off. Slo, on iOS, Android and Mac.
What the loop actually contains
The fundamental measures 89 Hz, a shade sharp of F2, with supporting partials at 59, 178, 270 and 404 Hz. What defines this file is the roll-off: the 500 to 1000 Hz band sits about 27 decibels below the loudest band, and above 1 kHz there is effectively nothing. Of the five ambient pads measured for these pages it is the dullest in the literal sense, and the least wide, with the two channels sharing most of their content.
How it compares and what to pair it with
Celestial Visions shares the low weight but adds a shimmer layer at the top that this one lacks entirely. Troposphere is far wider and swells much more. If you want the same darkness without any pitch in it, generated brown noise is the broadband equivalent. The full catalogue is on the sound library index.
Because it leaves the whole upper spectrum empty, it layers cleanly under almost anything. Try the Cosmic Drift and gentle rain blend in the free sound mixer, where the rain supplies the detail the pad deliberately omits.
Frequently asked questions
Why does Cosmic Drift sound muffled?
Because it genuinely is. Measured across the file, almost all of its energy sits below 500 Hz and there is essentially nothing above 1 kHz.
Is it the same as brown noise?
No. Brown noise is broadband and pitchless; this pad is tonal, built on a 89 Hz fundamental with a small set of partials above it.
Can it cover background noise?
Only low-frequency rumble. It has no high-frequency energy to work with, so a broadband sound is the better choice for speech or clatter.
How long is the loop?
Thirty-two seconds, looping continuously until you stop it or the timer does.