Physiology of speech
Speech comes from a special mechanism that has following three parts:(i) Energiser
It is the exhaled breath of the speaker
(ii) Vibrator
It is the vocal cord of the speaker
(iii) Resonator
It is the passages represented by the throat, mouth and / or nose.
The exhaled air stream when it passes through the windpipe to the mouth or nose produces the sound:
When it passes through the mouth or the oral passage, oral sounds are produced
When it passes through the nose or the nasal passage, nasal sounds are produced
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