Voice production is the physical process by which airflow from the lungs is transformed into acoustic sound pressure waves in the vocal tract. These sound pressure waves are then filtered by the vocal tract to produce formants in vowels and voiced consonants. The process of voice production is complex, but it can be understood in terms of three basic components: aerodynamics, biomechanics, and acoustics, which are discussed in this entry. In addition to their separate effects on voice production, all three components interact with and affect one another.


The lungs are sometimes described as the battery that powers voice production. The lungs form a dense network of closely packed air pockets (alveoli) at the end of small airways (bronchioles) surrounded by a pleural membrane and ...

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