I'll text you later http://wehwlaw.com/estate-planning robaxin 5 mg What you hear in Tuvan throat singing is a deft manipulation of the complex properties of sound waves. When anyone produces a sound, the vibration of the vocal cords creates a sound wave that is perceived as pitch. Slower vibration=slower sound wave=lower pitch. Faster vibration=faster sound wave=higher pitch. But in addition to the main sound wave — what we perceive as the note — there are harmonics, smaller sound waves produced at 2, 3, 4, 5 times the speed of the main one. Since they are tightly synched with the main wave, we don't hear them as different notes, but they do add to our perception of the overall quality of a voice.