Human sound creation

Last updated 2023.02.18 Edit Source

• Physics
• Wave
• Sound
• Extra

1. during phonation, vocal cords become closed by arytenoid cartilages
2. vocal cords are forced apart by positive air pressure
3. low air pressure closes them yet again (Bernoulli effect)

the frequency of the bursts of air determine the frequency of the sound

Only odd harmonics are produced by the vocal folds
vocal tract is a closed tube resonator

frequency is further affected by articulators

frequency can by influenced by:

• length and weight of vocal folds

amplitude can be influenced by:

• increase of airflow
• increase of resistance in vocal folds

wider and longer opening → higher amplitude, lower frequency

myoelastic aerodynamic theory of phonation