The speech mechanism involves the lungs, larynx, mouth, and nose. The lungs provide respiration to produce sound through phonation at the larynx using the vocal cords. Articulation then occurs using the lips, tongue, teeth, hard palate, and alveolar ridge in the mouth to form specific sounds. Nasal sounds are produced by sending air through the nose. Together, these systems of respiration, phonation, and articulation in the lungs, larynx, and mouth enable human speech.

1. SPEECH
MECHANISM
PROF. FELIPE

2. The conventional term for the
system of psycho-physiological
prerequisites that enable a
human being to make
meaningful utterances and to
understand another’s speech.
PROF. FELIPE

3. PROF. FELIPE
LARYNX
 The larynx, commonly called the voice box or glottis, is the passageway for air
between the pharynx above and the trachea below. It extends from the fourth to
the sixth vertebral levels.
Taken from www.training/cancer.gov

4. PROF. FELIPE
VOCAL CORDS
 also known as vocal folds or voice reeds, are folds of throat tissues that are key
in creating sounds through vocalization. The vocal cords vibrate and air passes
through the cords from the lungs to produce the sound of your voice.
Taken from www.hopkins,medicine.com

5. PROF. FELIPE
PHARYNX
 Pharynx (Throat) The pharynx, usually called the throat, is part of the respiratory
system and digestive system. It carries air, food and fluid down from the nose and
mouth. It provides an enclosed space that allows the speech muscles to initiate
sound and pronounce syllables better.
Taken from www.medicinenet.net

6. PROF. FELIPE
LIPS
 The lips play a role in changing the resonance of different speech sounds. By
altering the shape of our lips we can form different speech sounds. For instance,
for plosive sounds such as /p/ and /b/ the lips are compressed and then opened
to produce a rapid, explosive release of the breath stream.
Taken from www.thoughtco.com

7. PROF. FELIPE
TONGUE
 The tongue is the most important articulator of speech. The tongue is the major
articulator in phonation. Some sounds produced by the tongue are /t/ and
 /g/. It is active and composed of muscle. Without it, speech production cannot
occur. Taken from www.journalsagepub.edu/phonetics

8. PROF. FELIPE
TEETH
 The role of the teeth in phonation is more important than one might imagine. The
teeth provide an important place of articulation for the tongue and the lips. They
work together seamlessly and quickly to produce sound.
Taken from www.journalsagepub.edu/phonetics

9. PROF. FELIPE
NOSE
 Since sending air through the mouth is the most common way to produce
sounds, only sounds produced by sending air through the nose are named by
that feature of sound production. Sounds that pass through the nose are called
nasals..
Taken from www.mnstate.edu/phonetics

10. PROF. FELIPE
to sum up
The three mechanisms that we use to produce speech are:
RESPIRATION at the lungs
PHONATION: at the larynx
ARTICULATION: in the mouth
 . Taken from www. Britanicca.com/phonetics

11. THANKS!
PROF. FELIPE