PHONETICS
Phonetics, the study of speech sounds and their physiological production and acoustic qualities. It deals with the configurations of the vocal tract used to produce speech sounds (articulatory phonetics), the acoustic properties of speech sounds (acoustic phonetics), and the manner of combining sounds so as to make syllables, words, and sentences (linguistic phonetics).

ACCORDING TO EXPERT :
1.
(Chaer 1994:102)
Phonetics is a branch of phonological study
that studies the sound of a language regardless of whether the sounds have a function
of differentiating meaning or not.
2. (Keraf
1984: 30).
Phonetics is the science that
investigates and analyzes the speech sounds used in speech, and learns how to
produce these sounds by means of human speech.
3.
(Kridalaksana, 1995: 56)
Phonetics is the science that investigates
the earning, transmitting, and reception
of sounds of language; Interdisciplinary linguistics with physics, anatomy,
and psychology.
Chaer
(2007) divides the sequence of the process of the sounds of language, into 3
types of phonetics :
1.
Phonetic articulator/ phonetic organism /phonetic physiology.
Studying how the mechanisms of speech-devices
work in producing sounds of language and how they are classified.
(Glenson 1955: 239-256; Malmberg 1963: 21-28).
2 . Acoustic phonetics
Studies the sound of language as a physical
event or a natural phenomenon (the sounds are investigated for their velocity,
aplitudo, and intensity of nature)
(Malberg 1963: 5-20).
C.
Phonetically auditors
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of the language sounds by our ears.