INTRODUCTION
Phonetics deals with how human
speech sounds are produced. It studies the nature of sound in human speech.
Free flow of air is needed in order for you to produce a speech sound. This air
usually flows outward but also flows inward. The air that flows inward is
called Ingressive Air while
the air that flows outward is called Egressive Air.
THE ORGANS OF SPEECH PRODUCTION
The organs responsible for
speech production are grouped into three(3):
1. Articulatory Organs.
2.Respiratory Organs
3.Phonatory Organs.
ARTICULATORY ORGANS.
These are organs that come
together to form speech sounds. They include: the upper lip, the lower lip,
upper teeth, lower teeth, alveolar ridge, soft palate(velum), hard palate,
pharynx and larynx
.
RESPIRATORY ORGANS.
These are organs that contain
the air for speech production. For one to be able to speak, air in motion is
needed and the respiratory organs contain this air.
Air passes from the
lungs---trachea---larynx---pharynx---oral cavity(mouth)---nasal cavity(nose).
All these are the respiratory organs that aid speech production.
PHONATORY ORGANS.
These are organs responsible
for voice production. Phonation means voice production. These organs include
the larynx and its contents. The larynx
houses the vocal folds (vocal cords),
which are essential for phonation. The vocal folds are
situated just below where the tract of the pharynx splits into the
trachea and the oesophagus.
The diagram above shows the
articulators (i.e. the organs that come together to produce speech sound). You
will need to look at it carefully as the articulators are described, and I will
advise you have a mirror and a good light placed so that you can look at
the inside of your mouth.
PHARYNX
The oral
cavity (mouth) and the nasal cavity (nose) are connected and where they meet is
known as the pharynx.They
are connected in the sense that the top of the pharynx is divided in two; one
part being the back of the mouth and the other being the beginning of the way
through the nasal cavity(nose). The pharynx is a tube which begins just
above the larynx. You can see the back of the pharynx if you look in your
mirror with your mouth open.
THE LARYNX
The larynx is
known as the voice box. The larynx houses the vocal folds (vocal cords), which are essential for phonation. The vocal folds are
situated just below where the tract of the pharynx splits into the
trachea and the oesophagus.
THE SOFT PALATE (VELUM)
The soft palate or velum is seen in the diagram in a position that allows air to pass through the nose and through the mouth. It is always in this position but during speech production, it is raised so that air cannot escape through the nose. When the sounds k and g are produced, the tongue is in contact with the lower side of the velum.
THE HARD PALATE
The hard palate is also called the roof of the mouth. You can feel its smooth curved surface with your tongue by raising your tongue
.
THE TEETH
The teeth comprises the upper teeth and the lower teeth. It is in front of the mouth, immediately behind the lips.
THE TEETH
The teeth comprises the upper teeth and the lower teeth. It is in front of the mouth, immediately behind the lips.
THE TONGUE
The tongue is important in speech production; it can be moved into different parts and different shapes. It has different parts or subdivisions: tip, blade, front, back and root.
THE ALVEOLAR RIDGE
The alveolar ridge is behind the upper teeth. It is between the top front teeth and the hard palate. You can understand this by pronouncing the sounds: t and d. The place where the tip of your tongue touches while pronouncing these sounds (t and d) is the alveolar ridge. Its surface is really much rougher than it feels and is covered with little ridges.
THE LIPS
The lips (upper
lip and lower lip)are very important in speech production. They are pressed
together when sounds like p and b are produced. They are brought into
contact with the teeth when sounds like f and v are produced.
The eight articulators described above are very important in speech production.
The eight articulators described above are very important in speech production.
This is just an introduction for you to really understand phonetics (how sounds are produced). In our next tutorial, I shall be discussing The English Phonemes (consonants and vowels). Try not to miss any part of this tutorial. Use the comment box for questions and clarifications.