Phonation
Phonation is the process by which the vocal folds produce certain sounds through controlled, periodic vibration. This process is fundamental to speech and singing.
Physiology of Phonation[edit | edit source]
Phonation involves the use of the larynx, which houses the vocal folds. The vocal folds are a pair of multi-layered folds of tissue that can be controlled to create different pitches and volumes. When air from the lungs passes between the vocal folds, they vibrate and produce sound.
Process[edit | edit source]
The process of phonation involves several steps:
- The brain sends a signal to the muscles in the larynx.
- These muscles adjust the position and tension of the vocal folds.
- Air from the lungs is expelled and passes between the vocal folds.
- The pressure of the air causes the vocal folds to vibrate.
- The vibration of the vocal folds produces sound.
Types of Phonation[edit | edit source]
There are several types of phonation, including:
- Modal voice: This is the most common type of phonation. It is used in normal speech and singing.
- Falsetto: This is a type of phonation that is higher in pitch than the modal voice.
- Vocal fry: This is a low, creaky type of phonation.
- Whisper: This is a type of phonation where the vocal folds do not vibrate, producing a breathy sound.
Disorders of Phonation[edit | edit source]
There are several disorders that can affect phonation, including:
- Vocal fold nodules and polyps: These are growths on the vocal folds that can affect the quality of the voice.
- Laryngitis: This is inflammation of the larynx that can cause hoarseness or loss of voice.
- Spasmodic dysphonia: This is a neurological disorder that causes involuntary movements of the vocal folds.
See Also[edit | edit source]
Phonation Resources | ||
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