So I was fooling around with some stuff I probably shouldn't have been fooling around with. I have recently become intrested in the necronomicon, if you don't know what it is, do a google search. Anyways, I proceeded to search for the keyword "lucifers bible" as I typed in "Lucifer", I heard a sound that was very deep and whispery. I don't know what it was but it shook me up, the sort of feeling when you know your heart has just skipped a beat. What I'm trying to do is replicate this sound, it was approximatly 30-55Hz. If someone could give me a clip of 30Hz progressing to around 55Hz that'd be great, or maybe a program that could generate sounds.