The sample are mixed and processed. The fade-in/stopping done by filters & the noises, the full sample done by glitching, granulize & adding more sounds: doorclosing, drive starting, -stopping & dooropening/drive ending.
Using beepbox. Co, i accidentally made a sound similar to my fm radio being unable to pick up a station. I keep my radio in my basement, so sometimes it can't pick up some frequencies right away, producing this noise.
Mono field recording of the subway - ttc - in toronto, ontario, canada. Station announcements can be heard, but aren't legible. Includes subway chimes. Subway car stops and starts at three stations.
Earthquake produced with some low level sounds and special effects like rattling porcelain. Use a powerful subwoofer to get the full enjoyment of the sound.
An ambient sound, best experienced ina quiet environment, as the sound isbest enjoyed at a moderate volume level. Completely manufactured or created withaudacity with a basic noise file. There are very slight nuances ordiscrepancies with the sound; it it nota perfect monotone track, given theinitial sample is not a tone but a whitenoise sample.