the English
phoneme /p/ is aspirated (see aspiration) when it occurs at the beginning
of a syllable (as in pot) but unaspirated when it is preceded by /s/ (as in spot)
and may be unreleased when it occurs at the end of an utterance (as in “he’s
not her type”). These aspirated, unaspirated, and unreleased sounds are
all heard and identified as the phoneme /p/ and not as /b/; they are all
allophones of /p/.