Portal_Continuous_Rumble.wav

Synthetic ambiance that suggests some sort of alien mechanism. It uses complex modulations on notch-filtered (via FFT) noise. This sound is one within a series I created years ago for a radio theater fantasy series -- it is supposed to be the main sound of a "portal" while it is running correctly. This would be mixed with other sounds for start-up and shut-down, etc. This file should be a seamless loop, if I remember correctly. The rest of the series, also beginning with the name "Portal", can be found in my "SciFi" pack. This one is useful as a stand-alone ambient background loop, however, and thus it is being placed in my "backgrounds" pack. If you like the "portal" aspect of this, be sure to check out the siblings in the "SciFi" pack of mine.