Simultaneous intraoral air pressure and acoustic recordings were collected from three adult males during a spontaneous monologue and citation logoteme speaking tasks. Peak intraoral air pressure ( P 0 ), duration of consonantal closure ( D c ) and peak r.m.s. sound pressure associated with the consonantal release ( P b ) for selected English plosives were obtained from the recordings. Systematic changes in aerodynamic parameters associated with a conversational context vs citation contexts were probed. Intraoral pressures were found to be comparable to published values for plosives in syllable- and sentence-contexts, and voiceless plosives were consistently produced with greater magnitudes of P 0 than were voiced plosives. The data also indicate weak to moderate correspondences among P 0 , D c and P b , show that contextual and idiosyncratic effects significantly modify aerodynamic parameters of stop consonant articulation.