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Janwillem van den Berg (26 November 1920 in Akkrum – 18 October 1985 in Groningen) was a Dutch speech scientist and medical physicist who played a major role in establishing the myoelastic-aerodynamic theory [1] of voice production.
The myoelastic theory states that when the vocal cords are brought together and breath pressure is applied to them, the cords remain closed until the pressure beneath them, the subglottic pressure, is sufficient to push them apart, allowing air to escape and reducing the pressure enough for the muscle tension recoil to pull the folds back together again.
The Myoelastic-Aerodynamic Theory of Phonation. [4] Denver, CO 80204: National Center for Voice and Speech (2006). Titze, I.R. Principles of Voice Production. Englewood Cliffs, NJ: Prentice Hall (1994). Reprinted by the National Center for Voice and Speech, Denver, CO 80204 (2000). Translated into Chinese, German, Japanese and Portuguese. Titze ...
To varying degrees, different phonemes can be distinguished by the properties of their source(s) and their spectral shape.Voiced sounds (e.g., vowels) have at least one source due to mostly periodic glottal excitation, which can be approximated by an impulse train in the time domain and by harmonics in the frequency domain, and a filter that depends on, for example, tongue position and lip ...
Vennard’s collaboration with Janwillem van den Berg resulted in his film Voice Production: the Vibrating Larynx. Winning several awards, including best medical research film from a festival in Prague in 1960, it shows the anatomy and physiology of voice production in the excised larynx. He was a pioneer in the science of singing and in voice ...
The quality or color of a voice also depends on the singer's ability to develop and use various resonances by controlling the shape and size of the chambers through which the sound flows. It has been demonstrated electrographically in the form of "voice-prints" that, like fingerprints, no two voices are exactly alike. [2]
Regularly, the question arises of how one should use one's voice to minimize tiring in the vocal organs. This is encompassed in the study of vocology, the science and practice of voice habilitation. Basically, a normal, relaxed way of speech is the optimal method for voice production, in both speech and singing.
Edgerton views the process of voice production as similar to electro-acoustic composition in which the elements of production: power {airflow}, acoustic source {vocal folds or upper vocal tract disruption}, resonators {lower, upper, nasal vocal tract} and articulation {tongue, velum, lips, etc.} are identified and separately emphasized in order ...