In International Phonetic Alphabet, [p, t, k] retain their own pronunciation. They are "Voiceless" when you make its sound but has puff of air called aspiration.
The pronunciation of P is like that of B but it is voiceless. Make a sudden exhale and pronounce the 'p' sound with an explosive breath.Try to pronounce 'stop' and 'spot' - spot contains an aspirated version of /p/, with a puff of air after the stop is released; [p^h] - stop contains a plain /p/, without a puff of air after the stop; this is written just [p]
The pronunciation of T is voiceless. Make a sudden exhale and pronounce the 't' sound with an explosive breath.Try tin and stone - stone contains an aspirated version of /t/, with a puff of air after the stop is released; [t^h] - tin contains a plain /t/, without a puff of air after the stop; this is written just [t]
The pronunciation of S is voiceless. Make a sudden exhale and pronounce the 's' sound with an explosive breath.Try skirt and kick - skirt contains an aspirated version of /k/, with a puff of air after the stop is released; [k^h] - kick contains a plain /k/, without a puff of air after the stop; this is written just [k]
