Ambient background noise in city
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I'm working on replacing the ambient city noises with nature sounds. I have been able to find all files except two. The first sound is a general bass rumble, not a car or plane, just a static noise. The second is connected to wind speed. I have muted all sounds and been though all audio directories, but I cannot stop these two sounds from being played over my nature ambience. Is there any extra sources of sound files besides AWC files?