title: Hawkins and Stevens revisited with insert earphones.
authors.forename: Adrianus J M
authors.initials: AJ
authors.lastname: Houtsma
mesh_terms: D000161:Acoustic Stimulation; D001307:Auditory Perception / Q000502:physiology*; D004867:Equipment Design; D006801:Humans; D010470:Perceptual Masking / Q000502:physiology*; D011571:Psychoacoustics; D014159:Transducers / Q000592:standards*