Humans 12 Phonation human 12 phonation 12 physiology 11 voice 11 Voice 9 Female 7 female 7 glottis 6 Glottis 5 Male 5 Speech 5 Voice Quality 5 adult 5 male 5 Fundamental frequencies 4 Speech Acoustics 4 Speech Production Measurement 4 Vocal Cords 4 article 4 procedures 4 speech 4 speech analysis 4 vocal cord 4 Acoustics 3 Adult 3 Biomechanical Phenomena 3 Models, Biological 3 Natural frequencies 3