Branches of Phonetics
The study of phonetics can be divided into there main branches ACOUSTIC , AUDITORY and ARTICULATORY.
Acoustic Phonetics is the study of physical properties of speech sounds such as frequency and amplitude in their transmission. Acoustic phoneticians analyze the speech waves with the help of instruments they attempt to describe the physical properties of the of the stream of sound that issues forth from the mouth of a speaker.
It is in the field of acoustic phonetics that the most sticking development have taken place since the second World war. Complex sound waves produced in speech can be analyzed into their component frequencies and relative a multitudes. Considerable progress has also been made in speech synthesis, Acoustic analysis has confident (If confirmation was needed) that speech is not made up of a sequence of discrete sounds. The articulatory features of rounding of voice, of nasality, of obstruction and friction can also be identified acoustically. Acoustic phonetics has achieved a good deal of success in matters of the study of the sound, of vowels, but regarding consonants it has not reached final conclusions.
Auditory Phonetics is the study hearing and the perception of speech sounds. It studies different auditory impressions of speech quality, pitch and loudness of sounds. The auditory classification of speech-sounds has not yet been carried to decisive phase At the present time, phonetics can be regarded as being made up of two main branches: Articulatory and Acoustic phonetics.
Articulatory phonetics recognizes that speech produced by some kind of sound making apparatus inside the human body, and that specific sounds may be related to specific movement of the apparatus . Hence it is the study of movement of the speech organs in the articulation of speech. Speech is produced by the movements of the organs of speech lungs, larynx, soft plate, tongue, teeth and lips. The knowledge of the organs of speech, their relation to each other, and the way in which they are used while speaking, provides a sound basis for the classification of sounds of human languages.