It is concerned with the physical properties of speech sounds (phones), along with the processes of their physiological production and reception.
There are three main branches in phonetics:
- Articulatory phonetics which is concerned with the articulation of speech: The position, shape, and movement of speech organs, such as the lips, tongue, and vocal folds.
- Acoustic phonetics is concerned with acoustics of speech: The properties of the sound waves, such as their frequency and harmonics.
- Auditory phonetics is concerned with how speech is perceived: How sound is received by the inner ear and perceived by the brain.