article human human experiment speech female 70 male 69 Humans 63 adult 54 Speech 38 Female 36 Male 36 speech perception 29 Adult 28 Speech Perception 28 language 28 controlled study 27 physiology 23 Young Adult 22 young adult 22 Language 21 child 19 phonetics 18 Phonetics 17 Speech Acoustics 16 learning 15 clinical article 14 Adolescent 13 adolescent 13 language development 11 major clinical study 11