English Phonetics Class 2012 The principal organs which take part in the production of speech sound are: 1. Lungs 2. Mouth 3. Throat They provide the air necessary. They have the function of inhale and exhale. Inhalation: the chest expands the diaphragm upwards. Exhalation: the chest contracts and the diaphragm The mouth has the following organs which we use to articulate the sounds:lips, tongue, teeth, alveolar ridge, hard palate, etc. The throat has the following organs: The pharynx, larynx (contains the vocal cords) They define if the sound is voiced or voiceles http://www.llas.ac.uk/materialsbank/ mb081/page_06.htm THE SOUNDS OF SPEECH 1. THEIR PRODUCTION AND ARTICULATION 2. THEIR ACOUSTIC TRASMISSION 3. THEIR AUDITORY RECEPTION TO WHAT DOES AN ARTICULATORY PHONETIC DESCRIPTION REFER?