Acoustic analysis of overtone singing
نویسندگان
چکیده
The articulatory configuration of an overtone singer is analysed with frequency analysis of the voice signal, sonographic visualisation of the tongue position, and analysis of the vocal tract impedance at the mouth. The biphonic character of the signal is observed in the spectrum plot. The sonographic analysis reveals a highly variable tongue position during production of a rising overtone. The high pitch of the produced biphonic sound is further analysed using the impedance technique. The extraordinary amplification of the melody pitch seems to be caused by the coincidence in frequency of two resonances. This findings support the theory that the overtone sound in sygyt style is a result of the filter effect of the vocal tract.
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