human 46 young adult Humans 45 Young Adult 45 female 43 male 43 Female 40 Male 40 adult 37 Adult 34 physiology 28 article 22 speech 21 Acoustic Stimulation 20 auditory stimulation 20 human experiment 18 speech perception 18 Adolescent 17 Speech Acoustics 17 Speech Perception 17 adolescent 17 controlled study 14 hearing 14 Auditory Perception 11 procedures 10 psychology 10 Speech 9 aged 8 middle aged 8 noise 8