The field of articulatory phonetics is a subfield of phonetics that studies articulation and ways that humans produce speech. Articulatory phoneticians explain how humans produce speech sounds via the interaction of different physiological structures. Generally, articulatory phonetics is concerned with the transformation of aerodynamic energy into acoustic energy. Aerodynamic energy refers to the airflow through the vocal tract. Its potential form is air pressure; its kinetic form is the actual dynamic airflow. Acoustic energy is variation in the air pressure that can be represented as sound waves, which are then perceived by the human auditory system as sound.
Respiratory sounds can be produced by expelling air from the lungs. However, to vary the sound quality in a way useful for speaking, two speech organs normally move towards each other to contact each other to create an obstruction that shapes the air in a particular fashion. The point of maximum obstruction is called the place of articulation, and the way the obstruction forms and releases is the manner of articulation. For example, when making a p sound, the lips come together tightly, blocking the air momentarily and causing a buildup of air pressure. The lips then release suddenly, causing a burst of sound. The place of articulation of this sound is therefore called , and the manner is called (also known as a plosive).
The vocal tract can be viewed through an aerodynamic-biomechanic model that includes three main components:
air cavities
pistons
air valves
Air cavities are containers of air molecules of specific volumes and masses. The main air cavities present in the articulatory system are the supraglottal cavity and the subglottal cavity. They are so-named because the glottis, the openable space between the vocal folds internal to the larynx, separates the two cavities. The supraglottal cavity or the orinasal cavity is divided into an oral subcavity (the cavity from the glottis to the lips excluding the nasal cavity) and a nasal subcavity (the cavity from the velopharyngeal port, which can be closed by raising the velum).
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Acoustic phonetics Active articulator Affricate Airstream mechanism Alexander John Ellis Alexander Melville Bell Alfred C. Gimson Allophone Alveolar approximant (ɹ) Alveolar click (ǃ) Alveolar consonant Alveolar ejective affricate (tsʼ) Alveolar ejective (tʼ) Alveolar ejective fricative (sʼ) Alveolar flap (ɾ) Alveolar lateral approximant (l, l̥) Alveolar lateral ejective affricate (tɬʼ) Alveolar lateral ejective fricative (ɬʼ) Alveolar lateral flap (ɺ) Alveolar nasal (n) Alveolar ridge Alveolar trill (r, r̥) Alveolo-palatal consonant Alveolo-palatal ejective fricative (ɕʼ) Apical consonant Approximant consonant Articulatory phonetics Aspirated consonant (◌h) Auditory phonetics Back vowel Basis of articulation Bernd J.
In articulatory phonetics, the manner of articulation is the configuration and interaction of the articulators (speech organs such as the tongue, lips, and palate) when making a speech sound. One parameter of manner is stricture, that is, how closely the speech organs approach one another. Others include those involved in the r-like sounds (taps and trills), and the sibilancy of fricatives.
Phonetics is a branch of linguistics that studies how humans produce and perceive sounds, or in the case of sign languages, the equivalent aspects of sign. Linguists who specialize in studying the physical properties of speech are phoneticians. The field of phonetics is traditionally divided into three sub-disciplines based on the research questions involved such as how humans plan and execute movements to produce speech (articulatory phonetics), how various movements affect the properties of the resulting sound (acoustic phonetics), or how humans convert sound waves to linguistic information (auditory phonetics).
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