Overtone focusing in biphonic Tuvan throat singing

摘要: Khoomei is a unique singing style originating from the Central Asian republic of Tuva. Singers produce two pitches simultaneously: booming low-frequency rumble alongside hovering high-pitched whistle-like tone. The biomechanics this biphonation are not well-understood. Here, we use sound analysis, dynamic magnetic resonance imaging, and vocal tract modeling to demonstrate how achieved by modulating morphology. Tuvan singers show remarkable control in shaping their narrowly focus harmonics (or overtones) emanating cords. biphonic combination fundamental pitch focused !lter state, which at higher (1-2 kHz) formed merging formants, thereby greatly enhancing sound-production very narrow frequency range. Most importantly, that phenomenon arising linear !ltering rather than nonlinear source.