I'm not sure how volume plays into it all, but I was able to hear pitch from the beginning at 20hz until just about the end. But there were a couple things that confused me. It wasn't just straight pure pitch throughout, but the sound sort of went "ooooooeeeeeeeOOOOeeeeoooo and sometimes it was louder in the left ear, sometimes louder in the right.
FWIW, I was listening with an Audio Technica ATH M50 headset.
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Assuming is not knowing. Knowing is NOT the same as understanding. There is a difference between compassion and wisdom, however compassion cannot supplant wisdom, and wisdom can not occur without understanding. facts don't care about your feelings and FEELINGS ALONE MAKE FOR TERRIBLE, often irreversible DECISIONS 
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