lecturer 1 [p] in isolation lecturer 2 [p] in isolation lecturer 3 [p] in isolation
Based on Maciołek & Tambor (2012)
Voiceless: the vocal folds are separated, not vibrating, the air flows freely between them.
Bilabial: there is the closure of both lips.
Non-palatalized: the middle of the tongue is in a neutral position, it does not take part in the articulation.
Plosive: a closure in the oral cavity and of the soft palate obstructs the airflow from the lungs, the air-pressure rises, subsequently, there is a quick release of the closure in the oral cavity, i.e. a plosion.