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Suprasegmental phonology refers to the study of phonological properties of units larger than the segment-phoneme, such as syllable, word and sentence
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[p] is a voiced bilabial stop.
Two sounds are in free variation when they occur in the same environment and do not contrast, namely, the substitution of one for the other does not produce a different word, but merely a different pronunciation
Acoustic phonetics is concerned with the perception of speech sounds.
All syllables must have a nucleus but not all syllables contain an onset and a coda.
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