Female Humans 6 female 6 human 6 speech Speech Acoustics 5 physiology 5 Male 4 male 4 voice 4 Adolescent 3 Adult 3 adolescent 3 adult 3 child 3 Child 2 Healthy Volunteers 2 Phonation 2 Speech 2 Speech Production Measurement 2 Voice 2 Voice Quality 2 Young Adult 2 article 2 controlled study 2 normal human 2 pathophysiology 2 phonation 2 speech analysis 2 young adult 2