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Overtone singing: productive mechanisms and acoustic data

F Klingholz1

  • 1Department of Phoniatrics, Ludwig-Maximilians-University, Munich, Germany.

Journal of Voice : Official Journal of the Voice Foundation
|June 1, 1993
PubMed
Summary

Overtone singing produces two voices using a fundamental and enhanced harmonics. Vocal techniques like pharyngeal narrowing and mouth cavity adjustments make harmonics prominent for melodies.

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Area of Science:

  • Vocal music performance
  • Acoustic phonetics

Background:

  • Overtone singing, also known as harmonic singing, involves producing multiple pitches simultaneously.
  • It is typically performed using the chest register.

Purpose of the Study:

  • To explain the vocal mechanisms and acoustic principles behind overtone singing.
  • To describe how harmonics are enhanced to create melodies.

Main Methods:

  • Analysis of vocal tract adjustments including pharyngeal narrowing, velar constriction, and mouth opening.
  • Focus on tuning vocal formants and reducing formant bandwidth to 20 Hz.
  • Manipulation of prominent harmonics to generate melodic elements.

Main Results:

  • Overtone singing utilizes the fundamental frequency and amplified harmonics.
  • Specific vocal tract configurations enhance particular harmonics.
  • Adjustments in prominent harmonics allow for the creation of overtone melodies with sustained tones, tone steps, and trills.

Conclusions:

  • Overtone singing is achieved through precise control of vocal tract resonance and harmonic amplification.
  • The described techniques enable the production of complex melodic structures within a single vocal performance.

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